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• Error sysprepping Windows 8 Enterprise 90-day trial

  - by Philip

  I am using the Windows 8 Enterprise 90-day trial to evaluate the latest version of Windows for a private school. The way I work is that I use sysprep to prepare an generalized image, then I clone it to the school's computers. When I follow the instructions and try sysprep on my installation of Windows 8 in VirtualBox, sysprep thinks briefly and gives me an error message: Fatal error occurred while trying to sysprep the machine. Once I acknowledge it, sysprep closes. I checked the Windows Event Log, and there's nothing there that I could see. I also followed some instructions to cure this problem, but nothing changed. The error remains. My best guess is that the 90-day trial prohibits the use of sysprep, but I can't be sure. It might also be my use of VirtualBox, or who-knows-what. Has anyone had success with this, or encountered the same issue on real hardware?

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• Windows 7 startup repair with Truecrypt

  - by PHLiGHT

  I have many computers encrypted with Truecrypt 7.1a (current version) with the whole drive encrypted. Today one of them shows the Windows 7 splash screen for a moment and then goes into startup repair which can't read the encrypted drive. I've tried the various safe modes and what not. The solution is to decrypt the drive and then run startup repair to fix the drive. The problem is that is going to take 50 hours. I've started that process for this situation but I need to have a way to cover myself when this happens to the next PC. What can I do to avoid decrypting the whole drive? I can't be the only one facing this problem so I feel like I must be missing something. Thanks!

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• NVelocity (or Velocity) as a stand-alone formula evaluator

  - by dana

  I am using NVelocity in my application to generate html emails. My application has an event-driven model, where saving and/or updating of objects causes these emails to be sent out. Each event can trigger zero, one or multiple multiple emails. I want to be able to configure which emails get sent out at run-time without having to modify code. I was thinking I could leverage the NVelocity #if() directive to do this. Here is my idea... Step 1) Prior to email sending, the administrator must configure a formula for NVelocity to evaluate. For example: $User.FirstName == "Jack" Step 2) When an object is saved or created, build an NVelocity template in memory based on the input formula. For example: String formula = GetFormulaFromDB(); // $User.FirstName == "Jack" String templ = "#if( " + formula + ") 1 #else 0 #end"; Step 3) Execute the NVelocity engine in memory against the template. Check the results to see if we have to send the email: String result = VelocityMerge(templ); // utility function if( result.Trim() == "1" ) { SendEmail(); } I know this is not exactly what NVelocity was intended to do, but I think it just might work :) One of the benefits of doing things this way is that the same syntax can be used for the formula as is used inside the template. Does anybody have any words of caution or suggestions? Is there a way to execute the #if() directive without jumping through hoops like I have above? Is there a recommended way to validate the formula syntax ahead of time? Thanks.

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• Reset disk does not work for different model of computer

  - by dato

  I've created a reset USB disk on my HP computer, with Windows 7 Ultimate 32-bit, and it works fine. However, it does not work for Acer computers (notebooks too), so what is the problem here? I've have created it for the same user named user, and the password is exactly the same as well. Is it possible to show the language bar with a keyboard shortcut at the logon screen in Windows 7? I know I can do it through Control Panel, but I can't log into the system. When I click Reset Passwword, it shows me my USB flash drive and says that the password hint is on this USB drive. Then I click Next and type the new passwword, then confirm this new password, but an error dialog is shown. It says that an error occured when trying to change the password for this user-

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• Website ocasionally does not load on first click

  - by tfe

  Today I noticed that my website hosted on a virtual server ocasionally does not load on first click. I click on some link, browser starts loading page but nothing loads and does not not appear any error message (like "connection reset by peer etc). Nothing. When I click the same link again, page loads immediately. The same situation on 2 computers in different browsers. It happends not always, maybe on each 20... or 30 click. Sites from other servers load without this problem. Any ideas what can cause this problem?

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• VGA passthrough and desktop virtualization

  - by Zacariaz

  In short, my dream is to have one machine with multiple paravirtualized desktop and server guests, one of which has to be a Windows desktop with powerful graphics. As Windows can't be paravirtualized in the normal sense of the word, I was quite happy when I heard about VGA passthrough, but then I read on. As I understand it, such a setup would mean that the Graphics will be dedicated to one particular guest, thus you wouldn't be able to switch between guests. If this is in fact so, would someone please explain to me what the purpose/use of VGA passthrough is? I can think of no real use for it. Yes it's a cool technology, but to me it seems pointless. It's true that it's possible to passthrough individual VMs to separate GPUs, which is also cool, but in the end I should think that two seperate computers would make life a whole lot simpler. Again it seems rather pointless.

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• What do I do about a Java program that spawned two instaces of itself?

  - by user288915

  I have a java JAR file that is triggered by a SQL server job. It's been running successfully for months. The process pulls in a structured flat file to a staging database then pushes that data into an XML file. However yesterday the process was triggered twice at the same time. I can tell from a log file that gets created, it looks like the process ran twice simultaneously. This caused a lot of issues and the XML file that it kicked out was malformed and contained duplicate nodes etc. My question is, is this a known issue with Java JVM's spawning multiple instances of itself? Or should I be looking at sql server as the culprit? I'm looking into 'socket locking' or file locking to prevent multiple instances in the future. This is the first instance of this issue that I've ever heard of. More info: The job is scheduled to run every minute. The job triggers a .bat file that contains the java.exe - jar filename.jar The java program runs, scans a directory for a file and then executes a loop to process if the file if it finds one. After it processes the file it runs another loop that kicks out XML messages. I can provide code samples if that would help. Thank you, Kevin

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• Network location is not on the Domain

  - by Kyle Brandt

  I have a computer joined to the domain, but it doesn't view the network "location" as being part of the domain. I have tried removing and rejoining the domain and this doesn't help: Other computers in the same network don't have this problem. I have also tried several different icons, including both the train and the airplane which doesn't seem to make a difference. At least using nslookup, the server seems to have connectivity with the DCs in the same site. There also seem to be some errors that suggest a NULL domain: Computer: OR-WEB05.ds.stackexchange.com Description: NtpClient was unable to set a domain peer to use as a time source because of failure in establishing a trust relationship between this computer and the '' domain in order to securely synchronize time. NtpClient will try again in 3473457 minutes and double the reattempt interval thereafter. The error was: The trust relationship between this workstation and the primary domain failed. (0x800706FD)

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• How to keep memory consumption below 500 MB or less than 25 processes at background on netbook?

  - by overmann

  I bought a netbook yesterday, (I'm loving it) but I will never understand why they need to be a lot of processes running on background. I worry about other users who have no idea about it and continue using their computers with occasional choppiness due to 70 processes on background occupying most of the memory I'd like to keep my memory consumption below 500MB (I have 1 GB) is this possible? What are your ideas for this to work? I always run Microsoft Security Essentials at startup and real time protection, how many features can I disable to reach my goal memory usage?

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• In Gtk#, why might VALID_ITER fail even after I check it with IterIsValid?

  - by Matthew

  I have a convenience function in my TreeView that looks something like this: Card GetCardFromPath (TreePath path) { TreeIter iter; if (path == null || !Model.GetIter (out iter, path)) return null; if ((Model as TreeModelSort).IterIsValid (iter)) return (Card) Model.GetValue (iter, 0); return null; } Most of the time this works without any errors. But when it is called directly after the Model is changed, line 8 gives me these Gtk runtime errors: [Fatal 16:53:02.448] [Gtk] gtk_list_store_get_value: assertion `VALID_ITER (iter, list_store)' failed [Fatal 16:53:02.449] [GLib-GObject] g_value_unset: assertion `G_IS_VALUE (value)' failed As far as I can tell, I shouldn't even need to check IterIsValid, because I'm already checking the return value of Model.GetIter. Even so, how can VALID_ITER fail in a function that only gets called if IterIsValid returns true? If it makes a difference, the Model is a TreeModelSort, which sorts a TreeModelFilter, which filters a ListStore. The error occurs when GetCardFromPath is called from HandleSelectionChanged when multiple rows have just been removed from the ListStore. It doesn't seem to prevent anything from working properly, but having a cascade of errors whenever I remove multiple rows isn't really ideal.

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• Tree iterator, can you optimize this any further?

  - by Ron

  As a follow up to my original question about a small piece of this code I decided to ask a follow up to see if you can do better then what we came up with so far. The code below iterates over a binary tree (left/right = child/next ). I do believe there is room for one less conditional in here (the down boolean). The fastest answer wins! The cnt statement can be multiple statements so lets make sure this appears only once The child() and next() member functions are about 30x as slow as the hasChild() and hasNext() operations. Keep it iterative <-- dropped this requirement as the recursive solution presented was faster. This is C++ code visit order of the nodes must stay as they are in the example below. ( hit parents first then the children then the 'next' nodes). BaseNodePtr is a boost::shared_ptr as thus assignments are slow, avoid any temporary BaseNodePtr variables. Currently this code takes 5897ms to visit 62200000 nodes in a test tree, calling this function 200,000 times. void processTree (BaseNodePtr current, unsigned int & cnt ) { bool down = true; while ( true ) { if ( down ) { while (true) { cnt++; // this can/will be multiple statesments if (!current->hasChild()) break; current = current->child(); } } if ( current->hasNext() ) { down = true; current = current->next(); } else { down = false; current = current->parent(); if (!current) return; // done. } } }

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• Why do I have inconsistent network issues with my laptop's wireless?

  - by Jason

  I'm having trouble with my laptop Internet connection. It's patchy at best and resets or freezes a lot. The signal strength is also random. I thought it might be a driver issue but now I don't know. Three other computers using the same wireless network run well. I've switched out wireless routers so I don't think it's the router. I thought it might be the laptop's internal wireless card but I just bought an external USB network card and I'm still having problems. Specs Lenovo T-60p Windows 7 Ultimate Edition Patches/drivers are up to date I only use one of the below at a time, disabling the other: Intel PRO/Wireless 3945ABG v. 13.3.0.137 (Internal wireless) Medialink Wireless-N USB 2.0 Adapter (USB wireless) Any ideas on what might be the problem?

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• Send chrome tab from w7 laptop to w7 HTPC? (Like with iPad to AppleTV)

  - by Justin

  For the last couple days I've been trying to figure out how to get open tabs syncing between chrome installs on different computers to no avail. (if it's supposed to work the way I think it should, that is.) I have a laptop that I do all my web browsing on. Once in a while I'll come across some video that's worthy of the big-screen and the surround sound and want to open that tab (or media) on the HTPC. It'd be nice if I could just 'Right click Send to HTPC' and it opens up there with no further hassle. But even opening chrome on the HTPC and finding all my current tabs waiting would be fine. Alas, open tabs syncing doesn't seem to actually open tabs on other devices for me. Has anyone come up with a way to accomplish anything similar? Thanks all!

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• Looping through a method without for/foreach/while

  - by RichK

  Is there a way of calling a method/lines of code multiple times not using a for/foreach/while loop? For example, if I were to use to for loop: int numberOfIterations = 6; for(int i = 0; i < numberOfIterations; i++) { DoSomething(); SomeProperty = true; } The lines of code I'm calling don't use 'i' and in my opinion the whole loop declaration hides what I'm trying to do. This is the same for a foreach. I was wondering if there's a looping statement I can use that looks something like: do(6) { DoSomething(); SomeProperty = true; } It's really clear that I just want to execute that code 6 times and there's no noise involving index instantiating and adding 1 to some arbitrary variable. As a learning exercise I have written a static class and method: Do.Multiple(int iterations, Action action) Which works but scores very highly on the pretentious scale and I'm sure my peers wouldn't approve. I'm probably just being picky and a for loop is certainly the most recognisable, but as a learning point I was just wondering if there (cleaner) alternatives. Thanks. (I've had a look at this thread, but it's not quite the same) http://stackoverflow.com/questions/2248985/using-ienumerable-without-foreach-loop

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• Folder Permissions in Windows 7

  - by gameshints

  I'm trying to securely share a folder across two computers on a relatively public network. However, I'm a bit confused on how permissions work and was hoping for some clarification between the following so I don't accidentally make something public I don't want. When you right-click a folder and go to properties, what is the difference between Sharing Tab - 'Share...' button - List of users and permissions there Sharing Tab - 'Advanced Sharing...' button - 'Permissions' button - List of users and permissions there Security Tab - List of users and permissions there Thanks!

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• Does using functional languages help against computing values repeatedly?

  - by sharptooth

  Consider a function f(x,y): f(x,0) = x*x; f(0,y) = y*(y + 1); f(x,y) = f(x,y-1) + f(x-1,y); If one tries to implement that recursively in some language like C++ he will encounter a problem. Suppose the function is first called with x = x0 and y = y0. Then for any pair (x,y) where 0 <= x < x0 and 0 <= y < y0 the intermediate values will be computed multiple times - recursive calls will form a huge tree in which multiple leaves will in fact contain the same pairs (x,y). For pairs (x,y) where x and y are both close to 0 values will be computed numerous times. For instance, I tested a similar function implemented in C++ - for x=20 and y=20 its computation takes about 4 hours (yes, four Earth hours!). Obviously the implementation can be rewritten in such way that repeated computation doesn't occur - either iteratively or with a cache table. The question is: will functional languages perform any better and avoid repeated computations when implementing a function like above recursively?

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• make a computer recognized as a usb flash drive?

  - by user137560

  Is there anyway to make a folder or a partition on a computer (Linux/windows) to act like a flash drive to other computers or devices when connected with a usb cable. For example, I have a windows 7 computer with 2 partitions c and d, then connect that computer to another computer or a smart TV using a USB cable (has to be male to male USB cable) then the other computer or TV recognizes the current computer as a usb device. Is that possible, if not is there any usb switch to connect an external hard drive or flash drive to both the computer and TV without the need to manually switch them (I know about some USB switches but they only support automatic switching with some certain types of printers, not with mass storage) Thanks in advanced! Sam

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• How do I image my hard drive for backup? Or do I just need to backup the files?

  - by NoCatharsis

  I have never imaged a hard drive, so I don't know what software to use or how to prepare my system for imaging. Is this the best way to backup? In the past, I've always just kept a copy of my important files on an external drive and in Gmail or DropBox for smaller stuff, but it would be nice to just take one image and restore from that if something ever goes wrong. Thanks for the help. EDIT: I'm sorry, I forgot to mention the OS. I would like to do this for my home and work computers, which are Vista and XP respectively. And actually I'm about to upgrade to Windows 7 at home, so details on that would be appreciated too.

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• Windows 7 Task bar + Chrome tab Issue

  - by mikelbring

  When you have say more then one file or something open or window (not tabs), the windows 7 task bar combines or stacks them on top of each other. Well my chrome started to do that with tabs. It looks like I have more then one chrome window open, but its just tabs all in one window. So when I click on the stacked chrome on my task bar it shows a preview of each tab and then goes to that tab. I would much rather have it be one chrome icon rather then stacked and then I can select my tab. The preview for the many tabs I have open is annoying me. I know this has to be something I accidental turned on because it did not do this before nor does it do it on my other computers. Thank you.

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• Custom API requirement

  - by Jonathan.Peppers

  We are currently working on an API for an existing system. It basically wraps some web-requests as an easy-to-use library that 3rd party companies should be able to use with our product. As part of the API, there is an event mechanism where the server can call back to the client via a constantly-running socket connection. To minimize load on the server, we want to only have one connection per computer. Currently there is a socket open per process, and that could eventually cause load problems if you had multiple applications using the API. So my question is: if we want to deploy our API as a single standalone assembly, what is the best way to fix our problem? A couple options we thought of: Write an out of process COM object (don't know if that works in .Net) Include a second exe file that would be required for events, it would have to single-instance itself, and open a named pipe or something to communicate through multiple processes Extract this exe file from an embedded resource and execute it None of those really seem ideal. Any better ideas?

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• Put Google Chrome, AVG on a flash drive

  - by duncan12

  I often install programs on others' computers such as LibreOffice, which, when they only have a dial-up connection, takes forever to download. So instead I keep it on a flash drive and install it from there. This works fine for LibreOffice. However, some programs, when you download them all you are downloading is a downloader - when you download ChromeSetup and open it, a installer window opens which actually downloads Chrome. Dial-up users then see that it will take 4 hours. Another example is AVG free antivirus - you download an installer, which when opened actually downloads AVG. However this doesn't work too well for dial-up users. How do I put the entire program of things like Chrome and AVG on a flash drive for fast installation on others' slow connections?

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• Convert IIS / Tomcat Web Application to a multi-server environment.

  - by bill_the_loser

  I have an existing web application built in .Net, running on IIS that leverages a java servlet that we have running on Tomcat 5.5. We need to scale the application and I'm confused about what relates to our situation and what we need to do to get the servlet running on multiple servers. Right now I have 4 servers that can each individually process results, it almost seems like all I should have to do is add the ajp13 worker processes from three additional machines to the machine hosting the load balancer worker. But I can't imagine it should be that easy. What do I need to do to distribute the Tomcat load to the extra three machines? Thanks. Update: The current configuration is using a workers2.properties configuration file. From all of the documentation online I have not been able to determine the distinction between the workers.properties and the workers2.properties. Most of the examples that I have found are configuring the workers.properties and revolve around adding workers and registering them in the worker.list element. The workers2.properties does not appears to have a worker.list element and the syntax is different enough between the workers.properties and the workers2.properties that I'm doubtful that I can add that element. If I just add my multiple AJP workers to the workers2.properties file do I need to worry about the apparent lack of a worker.list element? [ajp13:localhost:8009] channel=channel.socket:localhost:8009 group=lb [ajp13:host2.mydomain.local:8009] channel=channel.socket:host2.mydomain.local:8009 group=lb [ajp13:host3.mydomain.local:8009] channel=channel.socket:host3.mydomain.local:8009 group=lb A couple of side notes... One I've noticed that sometime Tomcat doesn't seem to reload my changes and I don't know why. Also, I have no idea why this configuration has a workers2.properties and not a workers.properties. I've been assuming that it's based on version but I haven't seen anything to back up that assumption.

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• Why does my ethernet connection keep re-connecting, only with Windows?

  - by Nick Bolton

  I'm using Windows 7, and I have several computers on my network. For some reason, the network connection keeps disconnecting and immediately re-connecting. Infact, it may just be refreshing the DHCP lease... but I'm not sure. I've tried changing the network card, and ethernet cable, but the issue is still happening. I can only imagine that the issue is with the ethernet switch, but this doesn't happen on my other desktop which uses the same ethernet switch. Any ideas?

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• What's an alternative to using public folders (in Outlook)?

  - by Ivo Flipse

  My colleagues abuse our mail servers public folders to store (old) emails so that everyone can read them using IMAP. I'm looking into good alternatives after reading this Tech Republic article: "10 reasons why you should begin phasing out Exchange public folders" The most important thing they need is access to emails from multiple computers without overloading our network. So do you have any suggestions for alternatives? If there's a nice combination with some CRM system it would be interesting too. Note: this doesn't have to be freeware, usability and efficiency are more important. The solution has to be Windows 32 bit only

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• Ctrl Alt Left/Right moves mouse - how to find responsible software?

  - by Unimatrix02

  Hi, I've got a bit of a strange problem. On one of our computers, pressing ctrl + alt + left/right/up/down will move the mouse pointer on the screen, but it's not clear which software makes this happen. It interferes with other software that uses these shortcuts. I've already tried disabling some software, such as WinKey and a Kensington mouse driver, but that didn't make a difference. It's happening on a Windows XP SP3 computer by the way. Does anyone have an idea of how to find the software that traps this shortcut? Suggestions for actual (types of) software that might be doing this are welcome too. Thanks!

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