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• Can I run iOS apps on my Mac?

  - by Ken

  I've seen a number of neat iPhone apps recently that I'd like to use. In particular, there are a number of neat musical apps (metronome, tuner, etc.) that seem highly rated, and have no real Mac equivalent. I don't have a recent iPod/iPhone/iPad (I don't need portability or a phone and it seems silly to pay hundreds of dollars to run $15 worth of apps), but I do have an Intel (C2D) Mac. Can the iPhone dev simulator, or any other emulator, download and run iPhone App Store apps?

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• sqlcmd won't execute - Claims Native Client not installed properly

  - by nuit9

  I'm trying to use sqlcmd to execute some SQL scripts. Using a test command with a simple query like: sqlcmd -S HOSTNAME -d MYDATABASE -Q 'SELECT Names FROM Customers' sqlcmd does not appear to make any attempt to connect to the server as it displays this message: Sqlcmd: Error: Connection failure. SQL Native Client is not installed correctly. To correct this, run SQL Server Setup. The native client was presumably installed as part of the SQL Server setup and likely correctly. I actually get this message on any machine with SQL server installed trying to use sqlcmd so it's not a matter of the installation being corrupt. Unfortunately the message really tells me nothing about the problem so I don't know what the real issue is. I know the SQL Native client is working properly since a vbscript was able to execute SQL queries against the database. Is there some additional configuration needed to use sqlcmd?

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• How do I convert a Linux disk image into a sparse file?

  - by endolith

  I have a bunch of disk images, made with ddrescue, on an EXT partition, and I want to reduce their size without losing data, while still being mountable. How can I fill the empty space in the image's filesystem with zeros, and then convert the file into a sparse file so this empty space is not actually stored on disk? For example: > du -s --si --apparent-size Jimage.image 120G Jimage.image > du -s --si Jimage.image 121G Jimage.image This actually only has 50G of real data on it, though, so the second measurement should be much smaller. This supposedly will fill empty space with zeros: cat /dev/zero > zero.file rm zero.file But if sparse files are handled transparently, it might actually create a sparse file without writing anything to the virtual disk, ironically preventing me from turning the virtual disk image into a sparse file itself. :) Does it? Note: For some reason, sudo dd if=/dev/zero of=./zero.file works when cat does not on a mounted disk image.

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• Enable basic auth sitewide and disabling it for subpages?

  - by piquadrat

  I have a relatively straight forward config: upstream appserver-1 { server unix:/var/www/example.com/app/tmp/gunicorn.sock fail_timeout=0; } server { listen 80; server_name example.com; location / { proxy_pass http://appserver-1; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; auth_basic "Restricted"; auth_basic_user_file /path/to/htpasswd; } location /api/ { auth_basic off; } } The goal is to use basic auth on the whole website, except on the /api/ subtree. While it does work with respect to basic auth, other directives like proxy_pass are not in effect on /api/ as well. Is it possible to just disable basic auth while retaining the other directives without copy&pasting everything?

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• Disable drop shadows around windows or the menu bar on OS X

  - by Lri

  Nocturne has an option for disabling shadows around windows. But it's only available in night mode, and changing the mode (like when opening the application) causes an annoying screen flash animation. There's no way to disable the shadow under the menu bar either. MacThemes Forum / Removing the menubar dropshadow has a link to a .psd for making special desktop backgrounds that cancel out the shadow under the menu bar. But it only works if that area of the desktop picture has a low enough brightness. Some applications that cover the desktop (like DeskShade) also cover the menu bar's shadow. That's not a real solution though. Unsanity's ShadowKiller stopped working in either 10.5 or 10.6. (It does still work on 10.7.2, but the website says "NOT compatible with Mac OS X 10.6 Leopard", and I couldn't get it to work on a 10.6 installation.) Related: How do I decrease the window shadow in Mac OS X? - Super User

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• KVM online disk resize?

  - by Eil

  We're evaluting KVM for Linux virtualization on a few projects. All is going well so far. But one of our requirements is the ability to add disk space to a running guest without rebooting or taking it offline. Is this possible with KVM? The only thing I've found so far (but have not tested yet) is the ability to hotplug disks into the machine. If I go this route, then I could always add the new disk to an LVM volume group on the guest and then extend the chosen logical volume. The biggest downside to this approach is that over time we might end up with guests having variable numbers of virtual disks. The "real" disk space would be provided to the host over a SAN, so we can always add more space to the host whenever.

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• OSX: Undeletable files

  - by geoffjentry

  So via what I suspect is a cron'd rsync gone awry, I noticed that I have ~25000 variants of .DS_Store in a directory that's on an external disk, they're named "..DS_Store.FOO" where FOO varies. The problem is that I can seem to delete them, even using the various tricks I've seen over the years for removing files with oddball names. No problem, I said - I moved all of the real files into another directory and then just tried to do an 'rm -r' on the original directory ... no luck, it fails to delete those files and says directory not empty. Tried it again with 'rm -rf' and still no luck. I have no idea how to get rid of this thing, does anyone have any idea?

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• Ironport X-Junk header.

  - by Kyle

  My school uses Ironport for filtering/monitoring web traffic. I have a bit of curiosity as to why it tacks on a x-junk: header onto everything. After going through a few curl tests, I've found no real connection between what is shown on the page and the x-junk: header. here's my curl request: any ideas? Anchorage:~ khotchkiss$ curl -I google.com HTTP/1.1 301 Moved Permanently Location: http://www.google.com/ Content-Type: text/html; charset=UTF-8 Date: Sun, 06 Feb 2011 04:37:25 GMT Expires: Tue, 08 Mar 2011 04:37:25 GMT Cache-Control: public, max-age=2592000 Server: gws X-XSS-Protection: 1; mode=block Content-Length: 219 Age: 108 Via: 1.1 MC-IRONPORT.UNIVERSITY.LIBERTY.EDU:80 (IronPort-WSA/6.3.3-015) Connection: keep-alive X-Junk: xxxxxxxxxxxxxxxxxxxxxxx

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• NGINX: strip querystring in rewrite

  - by Roger

  I'd like to make a 301 rewrite to the sites's index without any querystring. Like this: http://example.com/anypage.asp?anyvar=anyvalue To: http://example.com/ Here's a real example: http://atipico.com.br/conteudo.asp?P_categ=23 I am trying to follow this: http://wiki.nginx.org/NginxHttpRewriteModule#rewrite (The commented are my attempts): location ~ /conteudo\.asp(.*)$ { #rewrite ^ / permanent; #rewrite ^ /? permanent; #return 301 /; #return 301 /?; #if ($args) { return 301 /; } } It always rewrites to http://atipico.com.br/?P_categ=23 Any ideas?

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• How to prove that an email has been sent?

  - by bguiz

  I have a dispute on my hands in which the other party (landlord's real estate agent) dishonestly claims to not have received an email that I truly did send. My questions is, what are the ways to prove that the email was indeed sent? Thus far, the methods that I have already thought of are: Screenshot of the mail in the outbox Forwarding a copy of the original email I am aware of other things like HTTP/ SMTP headers etc that would exist as well. Are these useful for my purposes, and if so how do I extract these? The email in question was sent using Yahoo webmail ( http://au.mail.yahoo.com/ ). Edit: I am not seeking legal advice here, just technical advice as to how to gather this information.

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• Duplicate IP address detection with multiple NICs

  - by sfink

  I am using arping -D to detect duplicate IP addresses within a network when setting up servers. (The network is controlled by someone else, and we have had many issues with IP allocation in the past.) It works fine as long as my host has a single NIC on a given VLAN, but when my host has more than one (I have one with 9 NICs on one VLAN and 1 on the other), arping -D always returns false collisions. The problem is that all 9 of my NICs respond to an ARP request for any of the IPs on those NICs. (These are real physical NICs, not aliases or anything.) I send out one ARP request packet, and get 9 ARP is-at ARP replies, one for each MAC address. I could implement my own solution by sniffing packets and checking for any replies with a MAC address other than the local NICs', but it seems like there ought to be an easier way.

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• Purpose of "computer" section in MySQL Cluster 7.2?

  - by dpk

  According to the cluster documentation, you can either define data nodes with: [ndbd] NodeId=n HostName=1.2.3.4 or [ndbd] NodeId=n ExecuteOnComputer=m [computer] Id=m HostName=1.2.3.4 I don't see a substantial difference between the two. The documentation has this to say: The [computer] section has no real significance other than serving as a way to avoid the need of defining host names for each node in the system. I'm stumped. If I have to define a hostname, what benefit is there to defining it in [computer] instead of [ndbd]?

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• loadbalancing with difference nginx location context and backend server context

  - by robinmag

  Hi, I used nginx and upstream module for load balancing with the following config upstream lb { server 127.0.0.1:8080; server 127.0.0.1:8081; } server { listen 88; server_name localhost; location /cas/ { proxy_pass http://lb; proxy_redirect off; proxy_connect_timeout 2; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } the problem is the "location /context/" have to match to the context of backend server so when i request localhost/context/index.html then nginx routes it to 127.0.0.1:8080/context/index.html or 127.0.0.1:8080/context/index.html. Is it possible to have difference backend context and nginx location for example with "location /" nginx will routes the request to 127.0.0.1:8080/context/index.html or 127.0.0.1:8080/context/index.html Thank you.

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• Syntax for file and process exclusions in Forefront Endpoint Protection?

  - by Massimo

  I can't seem to find an official and up-to-date documentation on how to set up file and process exclusions in Forefront Endpoint Protection 2012. For file types, which of these will work? Are they the same? ext .ext *.ext What about wildcards? .e?t .e* .*t For file paths, which wildcards are allowed and how do they work? C:\path* C:\path\s*e C:\path\somef?le C:\*\somefile C:\pa*\somefile C:\pa?h\somefile *\path *:\path For processes, can wildcard be used when specifying the file name? Same syntax as file paths? Also: I read in this post that, as of October 2009, Real Time Protection ignored wildcards; is this still true for the 2012 version?

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• Ubuntu: How to login without entering username and password

  - by torbengb

  I'm a newbie running Ubuntu 9.10. I have two users (wife and me), and each user's screensaver is set to lock so that on wakeup, we get to choose which user's desktop to go to. However, Ubuntu requires a password, so this is pretty tedious. I'd like to switch users without entering any password. I know about this trick that works for the boot login, but it doesn't deal with multiple users. Is it possible to set empty passwords for users in Ubuntu, or skip the password in other ways? (I'm expecting real Linux users to suggest that passwordless users must not get any rights and there be an admin user with a strong password. Yes, you're right. But that's not what this question is about. Thanks.)

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• how to best config for synflood setup in csf but web response still fast

  - by Binh Nguyen

  my server down random every day 4-5 time cause get high load very quick.. I have install csf and with some config server now stable.. load around 5. BUT the big isuse is : the real user very hard to access website specially from IE browser you can test at xaluan.com the flowing is config using in csf: SYNFLOOD = "1" SYNFLOOD_RATE = "100/s" SYNFLOOD_BURST = "10" CONNLIMIT = "80;30" PORTFLOOD = "80;tcp;70;5" CT_LIMIT = "29" # other config may same as default i playing around with this config for a week but still not work around.. If increase the rate SYNFLOOD_RATE = "140/s" or more.. the website response very fast.. be side have bad effect of server load increase so fast normal 20 and may be up to few hundred in peck time .. my need is response time fast but load still low.. please help thanks ps: server runing nginx frontend, apache, mysql, php ,, the home page has around 70 elements which will cached in browser in fist time access..

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• Active Directory intergration with linux users and zimbra

  - by Juan Diego

  I have the following questions about setting an active directory, that already has users and a domain, (i.e. internaldomain.edu) and real domain (i.e mydomain.edu.), and I have seeing many examples of the integration of AD with linux and usually they have a domain like intranet.mydomain.edu. Should I change "internaldomain.edu" to intranet.mydomain.edu or to mydomain.edu, or I can leave that internaldomain.edu like it is and create another domain. I am a littlebit confused with these, I know one is the windows domain but I dont know if that affects my email users.

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• VMWare Fusion - Cannot communicate between Host Mac and Virtual Mac running on same machine [migrated]

  - by Jeff Gold

  I'm running a "virtual" Mac OS machine on a Mac running VMWare Fusion. The Virtual Mac is setup with Bridged Networking, and has its own separate IP address. The outside world can connect to either the Mac itself or the virtual Mac via their respective IP addresses just fine, this works great! The problem... the Mac itself cannot connect to the virtual Mac's IP address, nor can the virtual Mac connect to the real Mac's IP address. Some things I've read mention something about enabling VMCI, but I have no idea how to do this, or if this is even the correct solution. Any suggestions?

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• Clean up infected computer from viruses

  - by ripper234

  I have a computer which had AVG Free installed from day one. After several months of operation, it starts detecting viruses and trojans all the time. Besides running a full scan, what should I do to clean the computer? Should I install another anti-virus or anti-malware tool (can it help?), or once viruses infect a system the only real solution is a clean format? (Lately I've heard of viruses that burn themselves in the BIOS, so a clean format might not always work ... how common is this technique? Should I burn a fresh BIOS as well?)

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• .php files see Apache environment variables, .html files don't

  - by dotancohen

  Consider this environment: $ cat .htaccess AddType application/x-httpd-php .php .html SetEnv Foo Bar $ cat test.php <?php echo "Hello: "; echo $_SERVER['Foo']; echo $_ENV['Foo']; echo getenv('Foo'); ?> $ cat test.html <?php echo "Hello: "; echo $_SERVER['Foo']; echo $_ENV['Foo']; echo getenv('Foo'); ?> This is the output of test.php: Hello BarBarBar This is the output of test.html: Hello Why might that be? How might I fix it? Here is phpinfo.php: http://pastebin.com/rgq7up61 Here is phpinfo.html: http://pastebin.com/VUKFNZ36 If anyone knows where I can host a real webpage instead of just the HTML for one, please let me know and I'll move the content to there. Thanks.

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• Nginx virtual server only partially working with Java application

  - by MFB

  Final Cut Server is a Java application (made by Apple) which launches from a web page. I have Nginx in front of this web server (amongst others) and, whilst the web server can be browsed externally, the Java app fails to launch correctly and throws the errors below. Can anyone offer clues as to what additional config I many have to add to Nginx to get this working? My existing Nginx config: user xxxx; worker_processes 4; pid /var/run/nginx.pid; events { worker_connections 1024; # multi_accept on; } http { sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; include /etc/nginx/conf/mime.types; default_type application/octet-stream; access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; gzip on; gzip_disable "msie6"; server { server_name _; return 444; } upstream fcs-site { server 10.10.5.20:8080; } server { listen 80; server_name example.com 10.10.5.90; access_log /var/log/nginx/fcs_access.log; error_log /var/log/nginx/fcs_error.log; location / { proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 60s; proxy_send_timeout 90s; proxy_read_timeout 90s; proxy_buffering off; proxy_temp_file_write_size 64k; proxy_pass http://fcs-site; proxy_redirect off; } } upstream myapp-site { server 127.0.0.1:6543; } server { listen 80; server_name otherexample.com www.otherexample.com; rewrite ^ https://$server_name$request_uri? permanent; } server { listen 443; ssl on; ssl_certificate /etc/ssl/otherapp.crt; ssl_certificate_key /etc/ssl/otherapp.key; server_name otherexample.com www.otherexample.com; access_log /var/log/nginx/otherapp_access.log; error_log /var/log/nginx/other_error.log; location / { proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 60s; proxy_send_timeout 90s; proxy_read_timeout 90s; proxy_buffering off; proxy_temp_file_write_size 64k; proxy_pass http://myapp-site; proxy_redirect off; } location /static { root /www; expires 30d; add_header Cache-Control public; access_log off; } } Java errors: com.sun.deploy.net.FailedDownloadException: Unable to load resource: http://example.com:8080/FinalCutServer/FinalCutServer_mac.jnlp at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source) at com.sun.deploy.net.DownloadEngine._downloadCacheEntry(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResourceCacheEntry(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResourceCacheEntry(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source) at com.sun.javaws.Launcher.updateFinalLaunchDesc(Unknown Source) at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source) at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source) at com.sun.javaws.Launcher.launch(Unknown Source) at com.sun.javaws.Main.launchApp(Unknown Source) at com.sun.javaws.Main.continueInSecureThread(Unknown Source) at com.sun.javaws.Main.access$000(Unknown Source) at com.sun.javaws.Main$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:722) java.net.ConnectException: Operation timed out at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at sun.net.NetworkClient.doConnect(NetworkClient.java:180) at sun.net.www.http.HttpClient.openServer(HttpClient.java:378) at sun.net.www.http.HttpClient.openServer(HttpClient.java:473) at sun.net.www.http.HttpClient.(HttpClient.java:203) at sun.net.www.http.HttpClient.New(HttpClient.java:290) at sun.net.www.http.HttpClient.New(HttpClient.java:306) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:995) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:931) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:849) at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source) at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source) at com.sun.deploy.net.BasicHttpRequest.doGetRequest(Unknown Source) at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source) at com.sun.deploy.net.DownloadEngine._downloadCacheEntry(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResourceCacheEntry(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResourceCacheEntry(Unknown Source) at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source) at com.sun.javaws.Launcher.updateFinalLaunchDesc(Unknown Source) at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source) at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source) at com.sun.javaws.Launcher.launch(Unknown Source) at com.sun.javaws.Main.launchApp(Unknown Source) at com.sun.javaws.Main.continueInSecureThread(Unknown Source) at com.sun.javaws.Main.access$000(Unknown Source) at com.sun.javaws.Main$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:722)

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• IIS7 returns 403.1 (execute access denied) for image file

  - by Kristoffer

  I have a web app running in IIS7 on Windows Server 2008. There is a virtual directory pointing to a shared folder "/Content/Data" on another machine (running Windows Server 2003), as well as a real directory "/Content/Images" on the local machine (web app sub folder). Accessing images in "/Content/Images" is no problem, but when an image (e.g. a JPEG file) in the "/Content/Data" is accessed by a browser, IIS returns this error: HTTP Error 403.1 - Forbidden: Execute access is denied. However, the web app can read and write to / from it. I assume IIS and ASP.NET are running under different user accounts? Does anyone have an idea on what I have to do to make it work? I have set the permissions on the shared folder to Everyone Full Control, with no luck.

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• loadbalancing with difference nginx location context and backend context

  - by robinmag

  Hi, I used nginx and upstream module for load balancing with the following config upstream lb { server 127.0.0.1:8080; server 127.0.0.1:8081; } server { listen 88; server_name localhost; location /cas/ { proxy_pass http://lb; proxy_redirect off; proxy_connect_timeout 2; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } the problem is the "location /context/" have to match to the context of backend server so when i request localhost/context/index.html then nginx routes it to 127.0.0.1:8080/context/index.html or 127.0.0.1:8080/context/index.html. Is it possible to have difference backend context and nginx location for example with "location /" nginx will routes the request to 127.0.0.1:8080/context/index.html or 127.0.0.1:8080/context/index.html Thank you.

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• Copying files locally on a network folder

  - by Altay_H

  I noticed that copying a large file from one location on a network drive to another location on the same network drive takes much longer than copying it locally. Instead of copying the file locally, the network computer sends the file to my remote computer, which sends it back to the same network computer. This means the files are being transferred over the network completely unnecessarily. Is there a way to fix this issue? It's becoming a real hassle to manage the video files on my network drive. Note: This is the case with both Windows and Linux (using Samba) network folders.

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• Windows Server Backup 2012 error - "The version does not support this version of the file format."

  - by Cylindric

  I'm trying out Windows Server 2012, specifically Windows Server Backup, as it would be a very useful way to see us through until we can upgrade our 'real' backup system. I'm backing up to a network share, and a Server 2008 WSB works fine. On the 2012 server however, I get an error: Backup of volume \?\Volume{298d1a7d-f80f-11e1-93e8-806e6f6e6963}\ has failed. The version does not support this version of the file format. It's a VHDX written by WSB, so I'm not sure what version it's complaining about. I can see a whole bunch of files in the destination, so I don't think it's a simple authentication issue, but I only get about 8Mb of VHDX written.

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