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• Mandatory profile on Terminal server fails to load. Userenv.log debug

  - by Datapimp23

  Hi, We're having a lot of corrupted profiles lately on our profile share. At the moment I have no clue why, but I decided to switch to one mandatory profile since the users can all use the same and there is no need to have seperate profiles for each user. Here's what I did. I logged into the Terminal server with a new user and configured some stuff (imported certificates and a few files). Then I logged out. Later as admin I copied the profile to another server and renamed it to bsilo. I made sure the user hive settings were adjusted. Everyone had access to the hive. I shared the bsilo folder with full access for everyone. I set the NTFS permissions to read, read & execute, list folder contents for domain users. I also renamed NTUSER.DAT to NTUSER.MAN. Now I set a env variable %manprofile% on the Terminal server that points to \server\bsilo\ntuser.man I set the env var as terminal services profile path for a test user. When I log in I as the user get the following output The system cannot find the path specified. Can somebody point me in the right direction. Thanks USERENV(1774.d18) 15:52:39:724 InitializePolicyProcessing: Initialised Machine Mutex/Events USERENV(1774.d18) 15:52:39:724 InitializePolicyProcessing: Initialised User Mutex/Events USERENV(1774.d18) 15:52:39:724 LibMain: Process Name: \??\C:\WINDOWS\system32\winlogon.exe USERENV(1774.d18) 15:52:48:005 LoadUserProfile: Yes, we can impersonate the user. Running as self USERENV(1774.d18) 15:52:48:005 ========================================================= USERENV(1774.d18) 15:52:48:005 LoadUserProfile: Entering, hToken = <0x340, lpProfileInfo = 0x6e5d8 USERENV(1774.d18) 15:52:48:005 LoadUserProfile: lpProfileInfo-dwFlags = <0x0 USERENV(1774.d18) 15:52:48:005 LoadUserProfile: lpProfileInfo-lpUserName = USERENV(1774.d18) 15:52:48:005 LoadUserProfile: lpProfileInfo-lpProfilePath = <\server\bsilo\ntuser.man USERENV(1774.d18) 15:52:48:005 LoadUserProfile: lpProfileInfo-lpDefaultPath = <\BDPINF5\netlogon\Default User USERENV(1774.d18) 15:52:48:005 LoadUserProfile: NULL server name USERENV(1774.d18) 15:52:48:005 LoadUserProfile: no thread token found, impersonating self. USERENV(1774.d18) 15:52:48:005 GetInterface: Returning rpc binding handle USERENV(218.2f94) 15:52:48:005 IProfileSecurityCallBack: client authenticated. USERENV(218.2f94) 15:52:48:005 DropClientContext: Got client token 000009B4, sid = S-1-5-18 USERENV(218.2f94) 15:52:48:005 MIDL_user_allocate enter USERENV(218.2f94) 15:52:48:005 DropClientContext: load profile object successfully made USERENV(218.2f94) 15:52:48:005 DropClientContext: Returning 0 USERENV(1774.d18) 15:52:48:005 LoadUserProfile: Calling DropClientToken (as self) succeeded USERENV(1774.d18) 15:52:48:005 CProfileDialog::Initialize : Cookie generated USERENV(1774.d18) 15:52:48:005 CProfileDialog::Initialize : Endpoint generated USERENV(218.1f38) 15:52:48:005 IProfileSecurityCallBack: client authenticated. USERENV(218.1f38) 15:52:48:020 LoadUserProfileI: RPC end point IProfileDialog_9D36D6DD48F0578A2A41B23D7A982E63 USERENV(218.1f38) 15:52:48:020 In LoadUserProfileP USERENV(218.1f38) 15:52:48:020 LoadUserProfile: Running as client, sid = S-1-5-18 USERENV(218.1f38) 15:52:48:020 ========================================================= USERENV(218.1f38) 15:52:48:020 LoadUserProfile: Entering, hToken = <0x98c, lpProfileInfo = 0x9c940 USERENV(218.1f38) 15:52:48:020 LoadUserProfile: lpProfileInfo-dwFlags = <0x0 USERENV(218.1f38) 15:52:48:020 LoadUserProfile: lpProfileInfo-lpUserName = USERENV(218.1f38) 15:52:48:020 LoadUserProfile: lpProfileInfo-lpProfilePath = <\server\bsilo\ntuser.man USERENV(218.1f38) 15:52:48:020 LoadUserProfile: lpProfileInfo-lpDefaultPath = <\BDPINF5\netlogon\Default User USERENV(218.1f38) 15:52:48:020 LoadUserProfile: NULL server name USERENV(218.1f38) 15:52:48:020 LoadUserProfile: User sid: S-1-5-21-807756564-1922302612-1565739477-22627 USERENV(218.1f38) 15:52:48:020 CSyncManager::EnterLock USERENV(218.1f38) 15:52:48:020 CSyncManager::EnterLock: No existing entry found USERENV(218.1f38) 15:52:48:020 CSyncManager::EnterLock: New entry created USERENV(218.1f38) 15:52:48:020 CHashTable::HashAdd: S-1-5-21-807756564-1922302612-1565739477-22627 added in bucket 11 USERENV(218.1f38) 15:52:48:020 LoadUserProfile: Wait succeeded. In critical section. USERENV(218.1f38) 15:52:48:864 GetOldSidString: Failed to open profile profile guid key with error 2 USERENV(218.1f38) 15:52:48:864 GetProfileSid: No Guid - Sid Mapping available USERENV(218.1f38) 15:52:48:864 TestIfUserProfileLoaded: return with error 2. USERENV(218.1f38) 15:52:48:864 GetOldSidString: Failed to open profile profile guid key with error 2 USERENV(218.1f38) 15:52:48:864 GetProfileSid: No Guid - Sid Mapping available USERENV(218.1f38) 15:52:48:864 LoadUserProfile: Expanded profile path is \server\bsilo\ntuser.man USERENV(218.1f38) 15:52:48:880 ParseProfilePath: Entering, lpProfilePath = <\server\bsilo\ntuser.man USERENV(218.1f38) 15:52:48:880 CheckXForestLogon: checking x-forest logon, user handle = 2444 USERENV(218.1f38) 15:52:48:880 CheckXForestLogon: policy set to disable XForest check USERENV(218.1f38) 15:52:48:880 ParseProfilePath: Mandatory profile (.man extension) USERENV(218.1f38) 15:52:49:239 AbleToBypassCSC: Try to bypass CSC USERENV(218.1f38) 15:52:49:239 AbleToBypassCSC: tried NPAddConnection3ForCSCAgent. Error 2109 USERENV(218.1f38) 15:52:49:239 AbleToBypassCSC: Share \server\bsilo mapped to drive E. Returned Path E:\ntuser.man USERENV(218.1f38) 15:52:49:239 ParseProfilePath: CSC bypassed. Profile path E:\ntuser.man USERENV(218.1f38) 15:52:49:255 ParseProfilePath: Tick Count = 0 USERENV(218.1f38) 15:52:49:255 ParseProfilePath: GetFileAttributes found something with attributes <0x2022 USERENV(218.1f38) 15:52:49:255 ParseProfilePath: Found a file USERENV(218.1f38) 15:52:49:255 ReportError: Impersonating user. USERENV(218.1f38) 15:52:49:255 ReportError: Logging Error DETAIL - The system cannot find the path specified. USERENV(218.1f38) 15:52:49:255 GetInterface: Returning rpc binding handle USERENV(218.1f38) 15:52:49:255 ReportError: RPC End point IProfileDialog_9D36D6DD48F0578A2A41B23D7A982E63 USERENV(218.1f38) 15:52:49:255 ReportError: waiting on rpc async event USERENV(1774.2398) 15:52:49:255 ErrorDialogEx: Calling DialogBoxParam USERENV(1774.2398) 15:52:49:270 ErrorDlgProc:: DialogBoxParam USERENV(218.1f38) 15:52:52:177 RpcAsyncCompleteCall finished, status = 0 USERENV(218.1f38) 15:52:52:177 ReleaseInterface: Releasing rpc binding handle USERENV(218.1f38) 15:52:52:177 LoadUserProfile: ParseProfilePath returned FALSE USERENV(218.1f38) 15:52:52:177 CancelCSCBypassedConnection: Cancelling connection of E: USERENV(218.1f38) 15:52:52:177 CancelCSCBypassedConnection: Connection deleted. USERENV(218.1f38) 15:52:52:177 CSyncManager::LeaveLock USERENV(218.1f38) 15:52:52:192 CSyncManager::LeaveLock: Lock released USERENV(218.1f38) 15:52:52:192 CHashTable::HashDelete: S-1-5-21-807756564-1922302612-1565739477-22627 deleted USERENV(218.1f38) 15:52:52:192 CSyncManager::LeaveLock: Lock deleted USERENV(218.1f38) 15:52:52:192 LoadUserProfile: 003 About Reverted back to user <00000000 USERENV(218.1f38) 15:52:52:192 LoadUserProfile: Leaving with a value of 0. USERENV(218.1f38) 15:52:52:192 ========================================================= USERENV(218.1f38) 15:52:52:192 LoadUserProfileI: LoadUserProfileP failed with 3 USERENV(218.1f38) 15:52:52:192 LoadUserProfileI: returning 3 USERENV(1774.d18) 15:52:52:192 LoadUserProfile: Running as self USERENV(1774.d18) 15:52:52:192 LoadUserProfile: Calling LoadUserProfileI failed. err = 3 USERENV(218.200c) 15:52:52:192 IProfileSecurityCallBack: client authenticated. USERENV(218.200c) 15:52:52:192 ReleaseClientContext: Releasing context USERENV(218.200c) 15:52:52:192 ReleaseClientContext_s: Releasing context USERENV(218.200c) 15:52:52:192 MIDL_user_free enter USERENV(1774.d18) 15:52:52:192 ReleaseInterface: Releasing rpc binding handle USERENV(1774.d18) 15:52:52:192 LoadUserProfile: Returning FALSE. Error = 3

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• VPN still working after rebooting without client - DrayTek client shows "No Connection"

  - by HeavenCore

  My home network is a simple router + pc's setup, nothing fancy - the router has DHCP enabled for 192.168.0.X (255.255.255.0) and my PC picks up the address 192.168.0.82. There are no devices on my local lan in the 192.168.1.x range. On my pc i have the DrayTek VPN client, and a company i do some work for has a DrayTek Vigor router. The VPN client establishes a VPN to that remote company using an IPSec Tunnel (PreShared Key - no encryption) Last night i shut down my pc with the VPN tunnel still connected, when i turned my computer on this morning i accidentally clicked an RDP shortcut to 192.168.1.2 (a host in the remote company) and to my amazement it connected?!? I checked and the DrayTek VPN client isnt running, and when i did run it, it clearly shows "Status: No connection". confused as to how my machine can still talk to this remote machine i tried a trace: C:\Users\HeavenCore>tracert 192.168.1.2 Tracing route to C4SERVERII [192.168.1.2] over a maximum of 30 hops: 1 * * * Request timed out. 2 * * * Request timed out. 3 * * * Request timed out. 4 * * * Request timed out. 5 * * * Request timed out. 6 * * * Request timed out. 7 * * * Request timed out. 8 * * * Request timed out. 9 * * * Request timed out. 10 * * * Request timed out. 11 * * * Request timed out. 12 15 ms 21 ms 32 ms C4SERVERII [192.168.1.2] Trace complete. No indication there as to how it's getting from my network to the remote host. with my network mask being 255.255.255.0 with ip 192.168.0.1 i dont even see how packets are routing to 192.168.1.1 - unless there was a static route in place, so i checked the route table: IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.82 266 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.0.0 255.255.255.0 On-link 192.168.0.82 266 192.168.0.82 255.255.255.255 On-link 192.168.0.82 266 192.168.0.255 255.255.255.255 On-link 192.168.0.82 266 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.0.82 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.0.82 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.0.1 Default =========================================================================== As far as i can see, nothing indicating how my packets are getting to 192.168.1.2??? To confirm i was on a different subnet i did an ipconfig /all: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Marvell Yukon 88E8056 PCI-E Gigabit Ether net Controller Physical Address. . . . . . . . . : 00-23-54-F3-4E-BA DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.0.82(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.0.1 DNS Servers . . . . . . . . . . . : 192.168.0.1 208.67.222.222 NetBIOS over Tcpip. . . . . . . . : Enabled Yet straight after confirming my ip and subnet as above i can go ahead and ping the remote machine: C:\Users\HeavenCore>ping 192.168.1.2 Pinging 192.168.1.2 with 32 bytes of data: Reply from 192.168.1.2: bytes=32 time=48ms TTL=127 Reply from 192.168.1.2: bytes=32 time=23ms TTL=127 Reply from 192.168.1.2: bytes=32 time=103ms TTL=127 Reply from 192.168.1.2: bytes=32 time=25ms TTL=127 Ping statistics for 192.168.1.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 23ms, Maximum = 103ms, Average = 49ms Also, note on the ping how the times are 35ms ish, this clearly shows the pings are to the remote host and not something on my local lan (all stuff on my local lan pings in 0ms) - plus i verified the host was actually the host via RDP. My Question: Can an IPSec tunnel stay up some how after a reboot without use of the VPN client? (well, i can clearly see that it can) - where in windows is there visibility of this? how does my machine know where to route the packets? I appreciate any insights & thoughts!

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• mdadm: Win7-install created a boot partition on one of my RAID6 drives. How to rebuild?

  - by EXIT_FAILURE

  My problem happened when I attempted to install Windows 7 on it's own SSD. The Linux OS I used which has knowledge of the software RAID system is on a SSD that I disconnected prior to the install. This was so that windows (or I) wouldn't inadvertently mess it up. However, and in retrospect, foolishly, I left the RAID disks connected, thinking that windows wouldn't be so ridiculous as to mess with a HDD that it sees as just unallocated space. Boy was I wrong! After copying over the installation files to the SSD (as expected and desired), it also created an ntfs partition on one of the RAID disks. Both unexpected and totally undesired! . I changed out the SSDs again, and booted up in linux. mdadm didn't seem to have any problem assembling the array as before, but if I tried to mount the array, I got the error message: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so dmesg: EXT4-fs (md0): ext4_check_descriptors: Block bitmap for group 0 not in group (block 1318081259)! EXT4-fs (md0): group descriptors corrupted! I then used qparted to delete the newly created ntfs partition on /dev/sdd so that it matched the other three /dev/sd{b,c,e}, and requested a resync of my array with echo repair > /sys/block/md0/md/sync_action This took around 4 hours, and upon completion, dmesg reports: md: md0: requested-resync done. A bit brief after a 4-hour task, though I'm unsure as to where other log files exist (I also seem to have messed up my sendmail configuration). In any case: No change reported according to mdadm, everything checks out. mdadm -D /dev/md0 still reports: Version : 1.2 Creation Time : Wed May 23 22:18:45 2012 Raid Level : raid6 Array Size : 3907026848 (3726.03 GiB 4000.80 GB) Used Dev Size : 1953513424 (1863.02 GiB 2000.40 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Mon May 26 12:41:58 2014 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 4K Name : okamilinkun:0 UUID : 0c97ebf3:098864d8:126f44e3:e4337102 Events : 423 Number Major Minor RaidDevice State 0 8 16 0 active sync /dev/sdb 1 8 32 1 active sync /dev/sdc 2 8 48 2 active sync /dev/sdd 3 8 64 3 active sync /dev/sde Trying to mount it still reports: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so and dmesg: EXT4-fs (md0): ext4_check_descriptors: Block bitmap for group 0 not in group (block 1318081259)! EXT4-fs (md0): group descriptors corrupted! I'm a bit unsure where to proceed from here, and trying stuff "to see if it works" is a bit too risky for me. This is what I suggest I should attempt to do: Tell mdadm that /dev/sdd (the one that windows wrote into) isn't reliable anymore, pretend it is newly re-introduced to the array, and reconstruct its content based on the other three drives. I also could be totally wrong in my assumptions, that the creation of the ntfs partition on /dev/sdd and subsequent deletion has changed something that cannot be fixed this way. My question: Help, what should I do? If I should do what I suggested , how do I do that? From reading documentation, etc, I would think maybe: mdadm --manage /dev/md0 --set-faulty /dev/sdd mdadm --manage /dev/md0 --remove /dev/sdd mdadm --manage /dev/md0 --re-add /dev/sdd However, the documentation examples suggest /dev/sdd1, which seems strange to me, as there is no partition there as far as linux is concerned, just unallocated space. Maybe these commands won't work without. Maybe it makes sense to mirror the partition table of one of the other raid devices that weren't touched, before --re-add. Something like: sfdisk -d /dev/sdb | sfdisk /dev/sdd Bonus question: Why would the Windows 7 installation do something so st...potentially dangerous? Update I went ahead and marked /dev/sdd as faulty, and removed it (not physically) from the array: # mdadm --manage /dev/md0 --set-faulty /dev/sdd # mdadm --manage /dev/md0 --remove /dev/sdd However, attempting to --re-add was disallowed: # mdadm --manage /dev/md0 --re-add /dev/sdd mdadm: --re-add for /dev/sdd to /dev/md0 is not possible --add, was fine. # mdadm --manage /dev/md0 --add /dev/sdd mdadm -D /dev/md0 now reports the state as clean, degraded, recovering, and /dev/sdd as spare rebuilding. /proc/mdstat shows the recovery progress: md0 : active raid6 sdd[4] sdc[1] sde[3] sdb[0] 3907026848 blocks super 1.2 level 6, 4k chunk, algorithm 2 [4/3] [UU_U] [>....................] recovery = 2.1% (42887780/1953513424) finish=348.7min speed=91297K/sec nmon also shows expected output: ¦sdb 0% 87.3 0.0| > |¦ ¦sdc 71% 109.1 0.0|RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR > |¦ ¦sdd 40% 0.0 87.3|WWWWWWWWWWWWWWWWWWWW > |¦ ¦sde 0% 87.3 0.0|> || It looks good so far. Crossing my fingers for another five+ hours :) Update 2 The recovery of /dev/sdd finished, with dmesg output: [44972.599552] md: md0: recovery done. [44972.682811] RAID conf printout: [44972.682815] --- level:6 rd:4 wd:4 [44972.682817] disk 0, o:1, dev:sdb [44972.682819] disk 1, o:1, dev:sdc [44972.682820] disk 2, o:1, dev:sdd [44972.682821] disk 3, o:1, dev:sde Attempting mount /dev/md0 reports: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so And on dmesg: [44984.159908] EXT4-fs (md0): ext4_check_descriptors: Block bitmap for group 0 not in group (block 1318081259)! [44984.159912] EXT4-fs (md0): group descriptors corrupted! I'm not sure what do do now. Suggestions? Output of dumpe2fs /dev/md0: dumpe2fs 1.42.8 (20-Jun-2013) Filesystem volume name: Atlas Last mounted on: /mnt/atlas Filesystem UUID: e7bfb6a4-c907-4aa0-9b55-9528817bfd70 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 244195328 Block count: 976756712 Reserved block count: 48837835 Free blocks: 92000180 Free inodes: 243414877 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 791 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8192 Inode blocks per group: 512 RAID stripe width: 2 Flex block group size: 16 Filesystem created: Thu May 24 07:22:41 2012 Last mount time: Sun May 25 23:44:38 2014 Last write time: Sun May 25 23:46:42 2014 Mount count: 341 Maximum mount count: -1 Last checked: Thu May 24 07:22:41 2012 Check interval: 0 (<none>) Lifetime writes: 4357 GB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 Default directory hash: half_md4 Directory Hash Seed: e177a374-0b90-4eaa-b78f-d734aae13051 Journal backup: inode blocks dumpe2fs: Corrupt extent header while reading journal super block

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• Unable to connect to Linux (Virtual OS-vmware) through Putty on Windows

  - by RBA

  Hi, I want to access my Linux box (Virtual OS) through Putty on Windows using Run command: putty -ssh -P 22 192.168.171.130,,, but it is returning an error message, not able to connect. But few days back I was able to connect it today. But not now. Why?? Windows IP Configuration Host Name . . . . . . . . . . . . : rba7791fd466 Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Unknown IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter VMware Network Adapter VMnet1: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet1 Physical Address. . . . . . . . . : 00-50-56-C0-00-01 Dhcp Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 192.168.234.1 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : Ethernet adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Dell Wireless 1395 WLAN Mini-Card Physical Address. . . . . . . . . : 00-24-2B-60-A0-88 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 10.0.0.2 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.0.0.1 DHCP Server . . . . . . . . . . . : 10.0.0.1 DNS Servers . . . . . . . . . . . : 10.0.0.1 Lease Obtained. . . . . . . . . . : Friday, August 28, 2009 4:11:09 AM Lease Expires . . . . . . . . . . : Saturday, August 29, 2009 4:11:09 AM Ubuntu Configuration eth0 inet addr:192.168.171.130

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• Network throughput issue (ARP-related)

  - by Joel Coel

  The small college where I work is having some very strange network issues. I'm looking for any advice or ideas here. We were fine over the summer, but the trouble began few days after students returned to campus in force for the fall term. Symptoms The main symptom is that internet access will work, but it's very slow... often to the point of timeouts. As an example, a typical result from Speedtest.net will return .4Mbps download, but allow 3 to 8 Mbps upload speed. Lesser symptoms may include severely limited performance transferring data to and from our file server, or even in some cases the inability to log in to the computer (cannot reach the domain controller). The issue crosses multiple vlans, and has effected devices on nearly every vlan we operate. The issue does not impact all machines on the network. An unaffected machine will typically see at least 11Mbps download from speedtest.net, and perhaps much more depending on larger campus traffic patterns at the time. There is one variation on the larger issue. We have one vlan where users were unable to log into nearly all of the machines at all. IT staff would log in using a local administrator account (or in some cases cached credentials), and from there a release/renew or pinging the gateway would allow the machine to work... for a while. Complicating this issue is that this vlan covers our computer labs, which use software called Deep Freeze to completely reset the hard drives after a reboot. It could just the same issue manifesting differently because of stale data on machines that have not permanently altered low-level info for weeks. We were able to solve this, however, by creating a new vlan and moving the labs over to the new vlan wholesale. Instigations Eventually we noticed that the effected machines all had recent dhcp leases. We can predict when a machine will become "slow" by watching when a dhcp lease comes up for renewal. We played with setting the lease time very short for a test vlan, but all that did was remove our ability to predict when the machine would become slow. Machines with static IPs have pretty much always worked normally. Manually releasing/renewing an address will never cause a machine to become slow. In fact, in some cases this process has fixed a machine in that state. Most of the time, though, it doesn't help. We also noticed that mobile machines like laptops are likely to become slow when they cross to new vlans. Wireless on campus is divided up into "zones", where each zone maps to a small set of buildings. Moving to a new building can place you in a zone, thereby causing you to get a new address. A machine resuming from sleep mode is also very likely to be slow. Mitigations Sometimes, but not always, clearing the arp cache on an effected machine will allow it to work normally again. As already mentioned, releasing/renewing a local machine's IP address can fix that machine, but it's not guaranteed. Pinging the default gateway can also sometimes help with a slow machine. What seems to help most to mitigate the issue is clearing the arp cache on our core layer-3 switch. This switch is used for our dhcp system as the default gateway on all vlans, and it handles inter-vlan routing. The model is a 3Com 4900SX. To try to mitigate the issue, we have the cache timeout set on the switch all the way down to the lowest possible time, but it hasn't helped. I also put together a script that runs every few minutes to automatically connect to the switch and reset the cache. Unfortunately, this does not always work, and can even cause some machines to end up in the slow state for a short time (though these seem to correct themselves after a few minutes). We currently have a scheduled job that runs every 10 minutes to force the core switch to clear it's ARP cache, but this is far from perfect or desirable. Reproduction We now have a test machine that we can force into the slow state at will. It is connected to a switch with ports set up for each of our vlans. We make the machine slow by connecting to different vlans, and after a new connection or two it will be slow. It's also worth noting in this section that this has happened before at the start of prior terms, but in the past the problem has gone away on it's own after a few days. It solved itself before we had a chance to do much diagnostic work... hence why we've allowed it to drag so long into the term this time 'round; the expectation was this would be a short-lived situation. Other Factors It's worth mentioning that we have had about half a dozen switches just outright fail over the last year. These are mainly 2003/2004-era 3Coms (mostly 4200's) that were all put in at about the same time. They should still be covered under warranty, buy HP has made getting service somewhat difficult. Mostly in power supplies that have failed, but in a couple cases we have used a power supply from a switch with a failed mainboard to bring a switch with a failed power supply back to life. We do have UPS devices on all but three of four switches now, but that was not the case when I started two and a half years ago. Severe budget constraints (we were on the Dept. of Ed's financially challenged institutions list a couple years back) have forced me to look to the likes of Netgear and TrendNet for replacements, but so far these low-end models seem to be holding their own. It's also worth mentioning that the big change on our network this summer was migrating from a single cross-campus wireless SSID to the zoned approach mentioned earlier. I don't think this is the source of the issue, as like I've said: we've seen this before. However, it's possible this is exacerbating the issue, and may be much of the reason it's been so hard to isolate. Diagnosis At first it seemed clear to us, given the timing and persistent nature of the problem, that the source of the issue was an infected (or malicious) student machine doing ARP cache poisoning. However, repeated attempts to isolate the source have failed. Those attempts include numerous wireshark packet traces, and even taking entire buildings offline for brief periods. We have not been able even to find a smoking gun bad ARP entry. My current best guess is an overloaded or failing core switch, but I'm not sure on how to test for this, and the cost of replacing it blindly is steep. Again, any ideas appreciated.

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• Windows using the DNS suffix search list on all lookups, even valid FQDNs. How to stop this?

  - by RealityGone

  When doing DNS lookups (specifically using nslookup, for some reason most things are not effected) Windows XP Pro SP3 is using the DNS suffix search list for every single one. Even for fully qualified domain names. For example I lookup "www.microsoft.com" but windows actually asks for "www.microsoft.com.eondream.com" (eondream.com is my primary domain). Now I can fix the issue by removing the Primary DNS suffix, but it seems to me that the DNS suffix search list should be for short, invalid names (where dots=0 or something). I'm sure I have a misconfiguration somewhere in windows but I don't know where. I've changed every option I can think of or find. Below is the output of ipconfig /all and nslookup (with debug & db2 enabled). This is using a static IP & (internal) DNS server. C:\ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : frayedlogic Primary Dns Suffix . . . . . . . : eondream.com Node Type . . . . . . . . . . . . : Unknown IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : eondream.com Ethernet adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Dell Wireless 1390 WLAN Mini-Card Physical Address. . . . . . . . . : 00-1B-FC-29-EB-6B Dhcp Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 192.168.13.32 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.13.13 DNS Servers . . . . . . . . . . . : 192.168.19.19 C:\nslookup Default Server: shardik.eondream.com Address: 192.168.19.19 set debug set db2 www.microsoft.com Server: shardik.eondream.com Address: 192.168.19.19 ------------ Got answer: HEADER: opcode = QUERY, id = 2, rcode = NOERROR header flags: response, want recursion, recursion avail. questions = 1, answers = 1, authority records = 0, additional = 0 QUESTIONS: www.microsoft.com.eondream.com, type = A, class = IN ANSWERS: - www.microsoft.com.eondream.com internet address = 208.69.36.132 ttl = 0 (0 secs) ------------ Non-authoritative answer: Name: www.microsoft.com.eondream.com Address: 208.69.36.132 (Note: it resolves to that IP because I use the opendns service and that is their suggestion page or whatever you want to call it) If I am reading the nslookup output correctly then it is not a problem with my DNS server because windows is actually asking for the incorrect domain.

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• Using WPF and SlimDx (DirectX 10/11)

  - by slurmomatic

  I am using SlimDX with WinForms for a while now, but want to make the switch to WPF now. However, I can't figure out how to get DX10/11 working with WPF. The February release of SlimDX provides a WPF example, which only works with DX 9 though. I found the following solution: http://jmorrill.hjtcentral.com/Home/tabid/428/EntryId/437/Direct3D-10-11-Direct2D-in-WPF.aspx but can't get it to work with SlimDX. My main problem is the shared resource handle as I don't know how to retrieve the shared handle from a SlimDX texture. I can't find any information to this topic. In C++ the code looks like this: HRESULT D3DImageEx::GetSharedHandle(IUnknown *pUnknown, HANDLE * pHandle) { HRESULT hr = S_OK; *pHandle = NULL; IDXGIResource* pSurface; if (FAILED(hr = pUnknown->QueryInterface(__uuidof(IDXGIResource), (void**)&pSurface))) return hr; hr = pSurface->GetSharedHandle(pHandle); pSurface->Release(); return hr; } Basically, what I want to do (because I think that this is the solution), is to share a texture between a Direct3d9DeviceEx (for rendering the WPF D3DImage) and a Direct3d10Device (a texture render target for my scene). Any pointers in the right direction are greatly appreciated.

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• How to enable gzip HTTP compression on Windows Azure dynamic content

  - by Steven

  Hi all, I've been trying unsuccessfully to enable gzip HTTP compression on my Windows Azure hosted WCF Restful service which returns JSON only from GET and POST requests. I have tried so many things that I would have a hard time listing all of them, and I now realise I have been working with conflicting information (regarding old version of azure etc) so think it best to start with a clean slate! I am working with Visual Studio 2008, using the February 2010 tools for Visual Studio. So, according to the following link, HTTP compression has now been enabled .. http://msdn.microsoft.com/en-us/library/ff436045.aspx ... and I've used the advice at the following page (the URL compression advice only), but I get no compression. http://blog.smarx.com/posts/iis-compression-in-windows-azure <urlCompression doStaticCompression="true" doDynamicCompression="false" dynamicCompressionBeforeCache="true" /> It doesn't help that I don't know what the difference is between urlCompression and httpCompression. I've tried to find out but to no avail! Could the fact that the tools for Visual Studio were released before the version of Azure which supports compression be a problem? I read somewhere that with the latest tools, you can choose which version of Azure OS you want to use when you publish ... but I don't know if that's true, and if it is, I can't find where to choose. Could I be using a pre-http enabled version? I've also tried blowery http compression module, but no results. Does any one have any up-to-date advice on how to achieve this? i.e. advice that relates to the current version of the Azure OS. Cheers! Steven

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• bind a WPF datagrid to a datatable

  - by Jim Thomas

  I have used the marvelous example posted at: http://www.codeproject.com/KB/WPF/WPFDataGridExamples.aspx to bind a WPF datagrid to a datatable. The source code below compiles fine; it even runs and displays the contents of the InfoWork datatable in the wpf datagrid. Hooray! But the WPF page with the datagrid will not display in the designer. I get an incomprehensible error instead on my design page which is shown at the end of this posting. I assume the designer is having some difficulty instantiating the dataview for display in the grid. How can I fix that? XAML Code: xmlns:local="clr-namespace:InfoSeeker" <Window.Resources> <ObjectDataProvider x:Key="InfoWorkData" ObjectType="{x:Type local:InfoWorkData}" /> <ObjectDataProvider x:Key="InfoWork" ObjectInstance="{StaticResource InfoWorkData}" MethodName="GetInfoWork" /> </Window.Resources> <my:DataGrid DataContext="{Binding Source={StaticResource InfoWork}}" AutoGenerateColumns="True" ItemsSource="{Binding}" Name="dataGrid1" xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit" /> C# Code: namespace InfoSeeker { public class InfoWorkData { private InfoTableAdapters.InfoWorkTableAdapter infoAdapter; private Info infoDS; public InfoWorkData() { infoDS = new Info(); infoAdapter = new InfoTableAdapters.InfoWorkTableAdapter(); infoAdapter.Fill(infoDS.InfoWork); } public DataView GetInfoWork() { return infoDS.InfoWork.DefaultView; } } } Error shown in place of the designer page which has the grid on it: An unhandled exception has occurred: Type 'MS.Internal.Permissions.UserInitiatedNavigationPermission' in Assembly 'PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' is not marked as serializable. at System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) at System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) ...At:Ms.Internal.Designer.DesignerPane.LoadDesignerView()

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• MVC2 DataAnnotations on ViewModel - ModelState.isValid Always Returns true

  - by ScottSEA

  I have an MVC2 Application that uses MVVM pattern. I am trying use Data Annotations to validate form input. In my ThingsController I have two methods: [HttpGet] public ActionResult Index() { return View(); } public ActionResult Details(ThingsViewModel tvm) { if (!ModelState.IsValid) return View(tvm); try { Query q = new Query(tvm.Query); ThingRepository repository = new ThingRepository(q); tvm.Airplanes = repository.All(); return View(tvm); } catch (Exception) { return View(); } } My Details.aspx view is strongly typed to the ThingsViewModel: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Config.Web.Models.ThingsViewModel>" %> The ViewModel is a class consisting of a IList of returned Thing objects and the Query string (which is submitted on the form) and has the Required data annotation: public class ThingsViewModel { public IList<Thing> Things{ get; set; } [Required(ErrorMessage="You must enter a query")] public string Query { get; set; } } When I run this, and click the submit button on the form without entering a value I get a YSOD with the following error: The model item passed into the dictionary is of type 'Config.Web.Models.ThingsViewModel', but this dictionary requires a model item of type System.Collections.Generic.IEnumerable`1[Config.Domain.Entities.Thing]'. How can I get Data Annotations to work with a ViewModel? I cannot see what I'm missing or where I'm going wrong - the VM was working just fine before I started mucking around with validation.

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• WPF - LayoutUpdated event firing repeatedly

  - by Drew Noakes

  I've been adding a bit of animation to my WPF application. Thanks to Dan Crevier's unique solution to animating the children of a panel combined with the awesome WPF Penner animations it turned out to be fairly straightforward to make one of my controls look great and have its children move about with some nice animation. Unfortunately this all comes with a performance overhead. I'm happy to have the performance hit when items are added/removed or the control is resized, but it seems that this perf hit occurs consistently throughout the application's lifetime, even when items are completely static. The PanelLayoutAnimator class uses an attached property to hook the UIElement.LayoutUpdated.aspx) event. When this event fires, render transforms are animated to cause the children to glide to their new positions. Unfortunately it seems that the LayoutUpdated event fires every second or so, even when nothing is happening in the application (at least I don't think my code's doing anything -- the app doesn't have focus and the mouse is steady.) As the reason for the event is not immediately apparent to the event handler, all children of the control have to be reevaluated. This event is being called about once a second when idle. The frequency increases when actually using the app. So my question is, how can I improve the performance here? Any answer that assists would be appreciated, but I'm currently stuck on these sub-questions: What causes the LayoutUpdated event to fire so frequently? Is this supposed to happen, and if not, how can I find out why it's firing and curtail it? Is there a more convenient way within the handler to know whether something has happened that might have moved children? If so, I could bail out early and avoid the overhead of looping each child. For now I will work around this issue by disabling animation when there are more than N children in the panel.

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• Asp.net MVC ModelState.Clear

  - by Mr Grok

  Can anyone give me a succinct definition of the role of ModelState in Asp.net MVC (or a link to one). In particular I need to know in what situations it is necessary or desirable to call ModelState.Clear(). Can anyone give me a succinct definition of the role of ModelState in Asp.net MVC (or a link to one). In particular I need to know in what situations it is necessary or desirable to call ModelState.Clear(). Bit open ended huh... sorry, I think it might help if tell you what I'm acutally doing: I have an Action of Edit on a Controller called "Page". When I first see the form to change the Page's details everything loads up fine (binding to a "MyCmsPage" object). Then I click a button that generates a value for one of the MyCmsPage object's fields (MyCmsPage.SeoTitle). It generates fine and updates the object and I then return the action result with the newly modified page object and expect the relevant textbox (rendered using <%= Html.TextBox("seoTitle", page.SeoTitle)%) to be updated ... but alas it displays the value from the old model that was loaded. I've worked around it by using ModelState.Clear() but I need to know why / how it has worked so I'm not just doing it blindly. PageController: [AcceptVerbs("POST")] public ActionResult Edit(MyCmsPage page, string submitButton) { // add the seoTitle to the current page object page.GenerateSeoTitle(); // why must I do this? ModelState.Clear(); // return the modified page object return View(page); } Aspx: <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<MyCmsPage>" %> .... <div class="c"> <label for="seoTitle"> Seo Title</label> <%= Html.TextBox("seoTitle", page.SeoTitle)%> <input type="submit" value="Generate Seo Title" name="submitButton" /> </div>

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• VSTS 2010 SGEN : error : Could not load file or assembly (Exception from HRESULT: 0x80131515)

  - by Developer IT

  Hi ! I am experiencing a strange issue with VS2010. We use TFS to build our API dlls and we used to reference them in our projects usign a mapped network drive that was fully trusted. We have been working like that for at least two years and everything worked perfectly. Today, I converted a webapp to vs2010 and when I compile it in Release, it's giving me: SGEN : error : Could not load file or assembly 'file:///L:\Api\Release API_20100521.1\Release\CS.API.Exceptions.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) The strange thing is that it's working when it's under the Debug profile... I tried adding the <runtime> <loadFromRemoteSources enabled="true" /> </runtime> into app.config and still no luck (See http://social.msdn.microsoft.com/Forums/en/msbuild/thread/d12f6301-85bf-4b9e-8e34-a06398a60df0 and http://msdn.microsoft.com/en-us/library/dd409252(VS.100).aspx) I am pretty sure that this issue is from visual studio or msbuild, as our code won't run from a network share when in prod because all the referenced dll's are copied into the bin folder. If anyone has an solution (or just an idea for a search path) please let me know !

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• CA2000 and disposal of WCF client

  - by Mayo

  There is plenty of information out there concerning WCF clients and the fact that you cannot simply rely on a using statement to dispose of the client. This is because the Close method can throw an exception (i.e. if the server hosting the service doesn't respond). I've done my best to implement something that adheres to the numerous suggestions out there. public void DoSomething() { MyServiceClient client = new MyServiceClient(); // from service reference try { client.DoSomething(); } finally { client.CloseProxy(); } } public static void CloseProxy(this ICommunicationObject proxy) { if (proxy == null) return; try { if (proxy.State != CommunicationState.Closed && proxy.State != CommunicationState.Faulted) { proxy.Close(); } else { proxy.Abort(); } } catch (CommunicationException) { proxy.Abort(); } catch (TimeoutException) { proxy.Abort(); } catch { proxy.Abort(); throw; } } This appears to be working as intended. However, when I run Code Analysis in Visual Studio 2010 I still get a CA2000 warning. CA2000 : Microsoft.Reliability : In method 'DoSomething()', call System.IDisposable.Dispose on object 'client' before all references to it are out of scope. Is there something I can do to my code to get rid of the warning or should I use SuppressMessage to hide this warning once I am comfortable that I am doing everything possible to be sure the client is disposed of? Related resources that I've found: http://www.theroks.com/2011/03/04/wcf-dispose-problem-with-using-statement/ http://www.codeproject.com/Articles/151755/Correct-WCF-Client-Proxy-Closing.aspx http://codeguru.earthweb.com/csharp/.net/net_general/tipstricks/article.php/c15941/

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• ASP.NET PowerShell Impersonation

  - by Ben

  I have developed an ASP.NET MVC Web Application to execute PowerShell scripts. I am using the VS web server and can execute scripts fine. However, a requirement is that users are able to execute scripts against AD to perform actions that their own user accounts are not allowed to do. Therefore I am using impersonation to switch the identity before creating the PowerShell runspace: Runspace runspace = RunspaceFactory.CreateRunspace(config); var currentuser = WindowsIdentity.GetCurrent().Name; if (runspace.RunspaceStateInfo.State == RunspaceState.BeforeOpen) { runspace.Open(); } I have tested using a domain admin account and I get the following exception when calling runspace.Open(): Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Requested registry access is not allowed. The web application is running in full trust and I have explicitly added the account I am using for impersonation to the local administrators group of the machine (even though the domain admins group was already there). I'm using advapi32.dll LogonUser call to perform the impersonation in a similar way to this post (http://blogs.msdn.com/webdav_101/archive/2008/09/25/howto-calling-exchange-powershell-from-an-impersonated-thead.aspx) Any help appreciated as this is a bit of a show stopper at the moment. Thanks Ben

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• AllowPartiallyTrustedCallersAttribute exception - unit testing with moq

  - by vdh_ant

  Hi guys I am receiving the following exception when trying to run my unit tests using .net 4.0 under VS2010 with moq 3.1. Attempt by security transparent method 'SPPD.Backend.DataAccess.Test.Specs_for_Core.When_using_base.Can_create_mapper()' to access security critical method 'Microsoft.VisualStudio.TestTools.UnitTesting.Assert.IsNotNull(System.Object)' failed. Assembly 'SPPD.Backend.DataAccess.Test, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is marked with the AllowPartiallyTrustedCallersAttribute, and uses the level 2 security transparency model. Level 2 transparency causes all methods in AllowPartiallyTrustedCallers assemblies to become security transparent by default, which may be the cause of this exception. The test I am running is really straight forward and looks something like the following: [TestMethod] public void Can_create_mapper() { this.SetupTest(); var mockMapper = new Moq.Mock<IMapper>().Object; this._Resolver.Setup(x => x.Resolve<IMapper>()).Returns(mockMapper).Verifiable(); var testBaseDa = new TestBaseDa(); var result = testBaseDa.TestCreateMapper<IMapper>(); Assert.IsNotNull(result); //<<< THROWS EXCEPTION HERE Assert.AreSame(mockMapper, result); this._Resolver.Verify(); } I have no idea what this means and I have been looking around and have found very little on the topic. The closest reference I have found is this http://dotnetzip.codeplex.com/Thread/View.aspx?ThreadId=80274 but its not very clear on what they did to fix it... Anyone got any ideas?

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• How do I deploy building blocks (quick parts) for Microsoft Outlook 2007?

  - by now

  I want to deploy some building blocks for Microsoft Outlook 2007. Microsoft has put up a poor solution at http://office.microsoft.com/en-us/outlook/HA102086531033.aspx#4 that asks you to save a template. That solution would require you to distribute that template to all the clients. An optimal solution would allow you to put the template containing the building blocks somewhere on the network and simply use the ”Workgroup building blocks path” group policy setting for shared paths in Microsoft Office 2007. Sadly, Outlook doesn’t respect that policy. Also, the described solution mentioned in the article above doesn’t work. Step 4 requests you to save the template as a Word Template after first asking you to save it as an Outlook Template. It seems that they copy&pasted the steps from the Word article and forgot to check whether it worked (and adjust the steps accordingly). Anyway, does anyone have any suggestions for how to distribute the building blocks without distributing NormalEmail.dotm (which will overwrite the clients’ own building blocks each time it is updated). Thanks!

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• Getting warning about sensitive information that could be disclosed to 3rd parties - Asp.net MVC 2.0

  - by chobo2

  Hi I never gotten this message before I started to use asp.net mvc 2.0 and jquery 1.4. <title>This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet.</title> <span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1> <h2> <i>This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet.</i> </h2></span> <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif "> <b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. <br><br> <b> Exception Details: </b>System.InvalidOperationException: This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet.<br><br> So it makes me wondering what sensitive data could be disclosed and if so how to get around this? What I was trying to send back was a rendered string of a partial view(http://www.klopfenstein.net/lorenz.aspx/render-partial-view-to-string-in-asp-net-mvc) and a success msg.

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• ConcurrentDictionary and updating values

  - by rboarman

  Hello, After searching via Google and coming up empty, I decided to ask the gurus here on StackOverflow. I am trying to update entries in a ConcurrentDictionary something like this: class Class1 { public int Counter { get; set; } } class Test { private ConcurrentDictionary<int, Class1> dict = new ConcurrentDictionary<int, Class1>(); public void TestIt() { foreach (var foo in dict) { foo.Value.Counter = foo.Value.Counter + 1; // Simplified example } } } Essentially I need to iterate over the dictionary and update a field on each Value. I understand from the documentation that I need to avoid using the Value property. Instead I think I need to use TryUpdate except that I don’t want to replace my whole object. Instead, I want to update a field on the object. After reading this: http://blogs.msdn.com/b/pfxteam/archive/2010/01/08/9945809.aspx Perhaps I need to use AddOrUpdate and simply do nothing in the add delegate. Does anyone have any insight as to how to do this? Thank you, Rick

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• PYTHON: ntlm authentication

  - by Svetlana

  Hello!! I'm trying to implement NTLM authentication on IIS (Windows Server 2003) from Windows 7 with python. LAN Manager Authentication Level: Send NTLM response only. Client machine and server are in the same domain. Domain controller (AD) is on another server (also running Windows Server 2003). I recieve 401.1 - Unauthorized: Access is denied due to invalid credentials. Could you please help me find out what is wrong with this code and/or show me the other possible directions to solve this problem (using NTLM or Kerberos)? [python] import sys, httplib, base64, string import urllib2 import win32api import sspi import pywintypes import socket class WindoewNtlmMessageGenerator: def __init__(self,user=None): import win32api,sspi if not user: user = win32api.GetUserName() self.sspi_client = sspi.ClientAuth("NTLM",user) def create_auth_req(self): import pywintypes output_buffer = None error_msg = None try: error_msg, output_buffer = self.sspi_client.authorize(None) except pywintypes.error: return None auth_req = output_buffer[0].Buffer auth_req = base64.encodestring(auth_req) auth_req = string.replace(auth_req,'\012','') return auth_req def create_challenge_response(self,challenge): import pywintypes output_buffer = None input_buffer = challenge error_msg = None try: error_msg, output_buffer = self.sspi_client.authorize(input_buffer) except pywintypes.error: return None response_msg = output_buffer[0].Buffer response_msg = base64.encodestring(response_msg) response_msg = string.replace(response_msg,'\012','') return response_msg fname='request.xml' request = file(fname).read() ip_host = '10.0.3.112' ntlm_gen = WindoewNtlmMessageGenerator() auth_req_msg = ntlm_gen.create_auth_req() auth_req_msg_dec = base64.decodestring(auth_req_msg) auth_req_msg = string.replace(auth_req_msg,'\012','') webservice = httplib.HTTPConnection(ip_host) webservice.putrequest("POST", "/idc/idcplg") webservice.putheader("Content-length", "%d" % len(request)) webservice.putheader('Authorization', 'NTLM'+' '+auth_req_msg) webservice.endheaders() resp = webservice.getresponse() resp.read() challenge = resp.msg.get('WWW-Authenticate') challenge_dec = base64.decodestring(challenge.split()[1]) msg3 = ntlm_gen.create_challenge_response(challenge_dec) webservice = httplib.HTTP(ip_host) webservice.putrequest("POST", "/idc/idcplg?IdcService=LOGIN&Auth=Intranet") webservice.putheader("Host", SHOD) webservice.putheader("Content-length", "%d" % len(request)) webservice.putheader('Authorization', 'NTLM'+' '+msg3) webservice.putheader("Content-type", "text/xml; charset=\"UTF-8\"") webservice.putheader("SOAPAction", "\"\"") webservice.endheaders() webservice.send(request) statuscode, statusmessage, header = webservice.getreply() res = webservice.getfile().read() res_file = file('result.txt','wb') res_file.write(res) res_file.close() [/python] sspi.py is available here: http://www.koders.com/python/fidF3B0061A07CD13BA35FF263E3E45252CFABFAA3B.aspx?s=timer Thanks!

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• System.Net.WebClient doesn't work with Windows Authentication

  - by Peter Hahndorf

  I am trying to use System.Net.WebClient in a WinForms application to upload a file to an IIS6 server which has Windows Authentication as it only 'Authentication' method. WebClient myWebClient = new WebClient(); myWebClient.Credentials = new System.Net.NetworkCredential(@"boxname\peter", "mypassword"); byte[] responseArray = myWebClient.UploadFile("http://localhost/upload.aspx", fileName); I get a 'The remote server returned an error: (401) Unauthorized', actually it is a 401.2 Both client and IIS are on the same Windows Server 2003 Dev machine. When I try to open the page in Firefox and enter the same correct credentials as in the code, the page comes up. However when using IE8, I get the same 401.2 error. Tried Chrome and Opera and they both work. I have 'Enable Integrated Windows Authentication' enabled in the IE Internet options. The Security Event Log has a Failure Audit: Logon Failure: Reason: An error occurred during logon User Name: peter Domain: boxname Logon Type: 3 Logon Process: ÈùÄ Authentication Package: NTLM Workstation Name: boxname Status code: 0xC000006D Substatus code: 0x0 Caller User Name: - Caller Domain: - Caller Logon ID: - Caller Process ID: - Transited Services: - Source Network Address: 127.0.0.1 Source Port: 1476 I used Process Monitor and Fiddler to investigate but to no avail. Why would this work for 3rd party browsers but not with IE or System.Net.WebClient?

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• WPF: Adorner Hit Testing / MouseDown Event

  - by stefan.at.wpf

  Hello, I have an Adorner which adornes a Border (please see screenshot below). The MouseDown Event for the Adorner is however only raised, when clicking on an element in the adorner. I need the MouseDown Event to be raised, when clicking on any place in the adorner above the adorned element. How can this be done? Do I have to add an transparent control in the adorner or is there another way for this? Thanks for any help! Screenshot and VS 2008 Project: http://cid-0432ee4cfe9c26a0.skydrive.live.com/browse.aspx/%C3%96ffentlich?uc=2 The Code for the adorner: class myAdorner : Adorner { public myAdorner(UIElement element) : base(element) { this.MouseDown += new System.Windows.Input.MouseButtonEventHandler(myAdorner_MouseDown); } void myAdorner_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e) { MessageBox.Show("ok"); } // Draws two rectangles: one in the upper-left and another one in the lower-right corner protected override void OnRender(System.Windows.Media.DrawingContext drawingContext) { Size size = this.AdornedElement.RenderSize; Rect r1 = new Rect(0.5, 0.5, 20, 20); Rect r4 = new Rect(size.Width - 20.5, size.Height - 20.5, 20, 20); SolidColorBrush brush = new SolidColorBrush(Colors.AliceBlue); Pen pen = new Pen(Brushes.Black, 1); drawingContext.DrawRectangle(brush, pen, r1); drawingContext.DrawRectangle(brush, pen, r4); } }

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• JQuery Thickbox - Can't get it to display

  - by Ali

  Hi All, I am using JQuery for the first time today. I can't make it to work (It simple doesnt show up). I want to display inline content using Thickbox (Eventually I will be displaying a PDF in an iframe). I have included all the javascript and css files etc. and referenced them as in code below. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="JQueryLearning._Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> <script src="Scripts/thickbox.js" type="text/javascript"></script> <script src="Scripts/thickbox-compressed.js" type="text/javascript"></script> <script src="Scripts/jquery-1.4.2.min.js" type="text/javascript"></script> <link href="App_Themes/Theme/Css/thickbox.css" rel="stylesheet" type="text/css" /> </head> <body> <form id="form1" runat="server"> <div> <a href="#TB_inline?height=50&width=300&inlineId=hiddenModalContent" title="Simple Demo" class="thickbox">Show hidden content.</a> <div id="hiddenModalContent" style="display: none;"> <div style="text-align: center;"> Hello ThickBox!</div> </div> </div> </form> </body> </html> Am I missing something? Thanks, Ali

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• ASP.NET how to use __doPostBack from Custom JavaScript with Master/Content Pages

  - by harrije

  In a simple aspx page I can have a custom JavaScript function postback as described in http://www.xefteri.com/articles/show.cfm?id=18 The simple page uses a linkbutton: <asp:LinkButton id="CreateFile" runat="server" onclick="CreateFile_Click" /> with code behind that has the VB subroutine: Sub CreateFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) and a Javascript custom function that does: __doPostBack('CreateFile',''); When I move the code to a content page with a corresponding master page the simple example no longer works. I'm aware that server control IDs are changed in the generated HTML when a master page is involved, and I'm using the correct IDs in the Javascript. As an example, for the LinkButton ID I use '<%=CreateFile.ClientID%' for the Javascript in the generated HTML. Never the less, I still can't figure out how to get postbacks from the Javascript when master pages are involved. More accurately, with a master page in the mix the code won't even compile but results in: 'CreateFile_Click' is not a member of 'ASP.testmaster_aspx' If I remove onclick="CreateFile_Click" from the LinkButton markup it compiles but does not work. Similary if onclick is removed from the simpler version without a master page it does not work either, as expected. Any input on how to get postback from a custom Javascript function when using master pages would be much appreciated.

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• Entity Framework: Delete Object and its related entities

  - by Waheed

  Hi, Does anyone know how to delete an object and all of it's related entities. For example i have tables, Products, Category, ProductCategory and productDetails, the productCategory is joining table of both Product and Category. I have red from http://msdn.microsoft.com/en-us/library/bb738580.aspx that Deleting the parent object also deletes all the child objects in the constrained relationship. This result is the same as enabling the CascadeDelete property on the association for the relationship. I am using this code Product productObj = this.ObjectContext.Product.Where(p => p.ProductID.Equals(productID)).First(); if (!productObj.ProductCategory.IsLoaded) productObj.ProductCategory.Load(); if (!productObj.ProductDetails.IsLoaded) productObj.ProductDetails.Load(); //my own methods. base.Delete(productObj); base.SaveAllObjectChanges(); But i am getting error on ObjectContext.SaveChanges(); i.e A relationship is being added or deleted from an AssociationSet 'FK_ProductCategory_Product'. With cardinality constraints, a corresponding 'ProductCategory' must also be added or deleted. Thanks in advance....

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