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Web Standards Update for Microsoft Visual Studio 2010 SP1


Adds CSS3 support and updates the HTML5 intellisense and validation including new JavaScript API's

3.2 Star
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1 Star
by Jesse Harlin | May 31 2012

I had terrible luck with this, as my VS installation is on a different drive. The thing would not detect that I had installed Service pack 1

1 Star
by XflaGo | May 27 2012

If you don't have your VS 2010 installed in the default directory, this tool will waste your time.

4 Star
by The Thinker | May 19 2012

Thanks will be useful for my web projects!

5 Star
by uggty | May 14 2012

Works amazing, thanks guys.

IMPORTANT WARNING : if you installed your visual studio to a different directory DO NOT INSTALL THIS !

3 Star
by Sofwarer | May 01 2012

4 Star
by razcode | April 21 2012

4 Star
by Istvan Bartos | April 15 2012

Very useful tool. I used it for two days, then happened an windows update, and the VS2010 instead of opening the css file, said:"Operation could not be completed". I obviously thought , because of the extension. There is a (new) option: Reinstall, ad after it I can use it again.
I think, If it would have been happened some month later, when I not remember the extension, it would have been hard to figure out, what is the problem, because on first look I didn't find anything in the event log.

5 Star
by Guido Over | April 13 2012

very useful! good to have it!

1 Star
by Ken Smith | April 10 2012

Broke CSS editing for me. With at least some CSS files, it would give me an "Unspecified Error". Uninstalling it from the extension manager didn't fix it. I had to download the file and re-run it, which gave me the option to fully remove it. Unfortunately, not recommended: just too buggy.

1 Star
by Sportflier | April 03 2012

I'd love to give this a nice review but I can't get it to install. Every time I run it the installer gets to about 75% complete then reports a network error.

Fortunately VS is still behaving properly after trying to install this.

1 Star
by Robert Ivanc | March 31 2012

same as others - after installing this, VS cannot open any .css files anymore. Web standards indeed! ;)

1 Star
by Gardnerp2 | March 29 2012

Do NOT install this!

After an hour of messing around with a "Service Pack 1 is not installed" error (which it WAS), the only result from getting this installed is that I can no longer edit CSS files at all. "The operation could not be completed. Unspecified error" is all I get.

I uninstalled it, but VS2010 still does not edit CSS files.

It's been an issue for 6 months, but apparently not everyone gets it:

Not worth the hassle.

5 Star
by Ehsan Mohammadi | March 24 2012

Thanks, useful update!

5 Star
by sailingTech | March 16 2012

Worked like a champ, almost too easy.

5 Star
by dmidfielder | March 16 2012

5 Star
by Asaf Benyamin | March 15 2012

2 Star
by VZero | March 09 2012

Installation issues. It complained about SP1 not installed even though it is. I've modified the msi as per tip in Q and A to get it installed.

After installing, I can not open CSS files as it complains "Operation could not be completed".

EDIT (also upgraded to 2 stars now that some stuff works)

It turns out the issues are caused by the msi installer assumes that visual studio is installed to the default location of c:\program files (x86)\microsoft visual studio 10.0\.

I had to move a bunch of files from C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\Packages to my installation directory for things to work.

5 Star
by jedej | February 28 2012

5 Star
by Paul Syfrett | February 28 2012

2 Star
by Hallmanac | February 08 2012

When this extension works, it's fantastic, but I've gone through two uninstall/reinstall cycles with the third one forcing me to give up on it. Works for a while and then locks up my CSS files with the error message "The operation could not be completed".

For anyone with this problem, in order to fully uninstall it you have to go through a couple of hoops to remove it completely.

First uninstall it from the extension manager, restart VS, then re-download the extension and "install" it. The installer will pickup that you still have it installed and will give you the option to repair it or remove it completely. You can take it from there.

21 - 40 of 118 Items   
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  • Installer Broken
    3 Posts | Last post January 31, 2014
    • I cannot install this msi.  100% of the time gets error that it cannot read from source:
      The file '_0F782C482DDA47E9ABF16884D1369F94' cannot be installed because the file cannot be found in cabinet file '_80D683DD59333E5CC8E528639A9A7F06'. This could indicate a network error, an error reading from the CD-ROM, or a problem with this package.
      Please fix ASAP!  These is no real HTML5 support in VS2010 without this!
    • Setup doesn't detects VS SP1 on my computer because its installed on D:. How to solve this problem 
    • This looks similiar to the error I had. The error I received was that it could not read from file 'Web_Standards_Update[1].msi'. The file name I downloaded was 'Web Standards Update.msi'. To fix this I made a copy of the msi file and named it to what it was looking for. The install ran correctly.
  • It is not working
    3 Posts | Last post December 20, 2013
    • i tried like 5 times on visual studio 2010 and it not showing up!!!!!!!
    • i installed this add-on today too, doesnt appear in extension manager or anything even though its installed.
    • Same issue and since no one has replied since March I don't have much hope. 
      I checked and it doesn't install to the extensions folder.
  • Service Pack 1 for Visual Studio 2010 must be installed
    3 Posts | Last post April 04, 2013
    • Still haven't been able to get by this screen, it is installed and doesn't matter if I install and uninstall.
    • The solution is here:
      (Use Google Translate to translate the post from Chinese to English)
    • That link gets a Chinese 404 error.
  • why is the install signed by scott hanselman and not microsoft?
    2 Posts | Last post June 05, 2012
    • why is the install signed by scott hanselman and not microsoft?
    • My understanding is it's because this is an unofficial project.  From the extension description: "Note: This extension is created by a bunch of folks within Microsoft in their spare time.  This is NOT an official Microsoft product."
  • After install, CSS files open in HTML editor by default
    1 Posts | Last post April 20, 2012
    • The CSS Source Editor is flagged as the default in the Open With dialog, but double-clicking a css file opens it in the HTML Editor.
  • installs but not listed in Extension manager
    1 Posts | Last post March 29, 2012
    • re4
      I can install the msi without problems, but I don't see anything listed in VS 2010 SP1 under Tools->Extension Manager.  Shouldn't there be something about "Web Standards Update" listed?
  • -webkit-box-shadow && -moz-box-shadow
    3 Posts | Last post March 23, 2012
    • -webkit-box-shadow and -moz-box-shadow generate warnings, even when following the example provided by intellisense...
    • Thanks for reporting the bug. It will be fixed for the next update. 
    • This is still an issue - any idea on when there will be an update?
  • Media Queries and *
    2 Posts | Last post March 20, 2012
    • Does anyone know when media queries and properties starting with * will be added.
    • In Visual Studio 11
  • Even in Visual Studio SP1 installed, MSI setup just requests SP1
    26 Posts | Last post March 07, 2012
    • When I click the MSI setup file, it pops up a dialog message as follows,
      Web Standards Update for Visual Studio 2010 SP1
      Service Pack 1 for Visual Studio 2010 must be installed. Do you want to download it now?
      Unfortunately, I've installed SP1 for VS2010 already.
      The following text are in my Visual Studio 2010 About dialog.
      Microsoft Visual Studio 2010
      Version 10.0.40219.1 SP1Rel
      Microsoft .NET Framework
      Version 4.0.30319 SP1Rel
      Installed Version: Ultimate
      Microsoft Office Developer Tools   01019-532-2002102-70101
      Microsoft Office Developer Tools
      Microsoft Visual Studio 2010 Ultimate - ENU Service Pack 1 (KB983509)   KB983509
      This service pack is for Microsoft Visual Studio 2010 Ultimate - ENU.
      If you later install a more recent service pack, this service pack will be uninstalled automatically.
      For more information, visit
      Windows Azure Tools   Version 1.3
      Windows Azure Tools for Microsoft Visual Studio 2010 v1.3.31122.1601
    • I have the same problem as SeongTae Jeong on one machine, although it works on another. Re-installing Service Pack 1 has no effect. The machine with the issue does not have IIS installed, but that's the only significant difference I can think of between the two machine.
    • I am having the same issue. When I try to install, the dialog says, "Service Pack 1 for Visual Studio 2010 must be installed. Do you want to download it now?" I already had SP1 installed. I tried re-installing it and received the same message. 
    • "Service Pack 1 for Visual Studio 2010 must be installed. Do you want to download it now?"  +1
    • I have the same problem. I noticed, however, that the download link goes to a page where the Web Platform Installer is launched. Maybe the Web Standards Update only works if VS2010 SP1 has been installed via WebPI? My WebPI also shows the SP1 update as "available". Too bad that I installed SP1 right after the release, before it showed up in WebPI. :-(
    • Somehow the SP1 installer is interfering with this update for a small number of people. We are trying to come up with a solution to this asap!
    • I now did reinstall VS2010 with Web Platform Installer (using the link the Web Standards Update installer pointed me to). It installed 12 packages overall and took an hour - but then I could install the Web Standards Update. Maybe this helps others, too. 
    • The cause isn't the Web PI. I have VS 2010 + SP1 and installed SP 1 with the standard download for it and no issue here installing it.
      Had issues with other addin's around the VS SDK, so if you had that installed previously maybe make sure that is also at SP1 (it's a seperate install)
    • If you have trouble installing it because it requires you to have SP1 installed while it already is you could do the following:
      Get the ORCA tool from Microsoft ( this is a MSI editor.
      Once you have it, start it and Open the downloaded "Web Standards Update.msi" package.
      In the Tables, select the "CustomAction" entry, 
      Once selected, in the right pane, select the "VSDCA_VsdLaunchConditions" line, right-click and select "Drop Row".
      Then Save the package and run it.
    • Same problem here. Windows 7, 64bit.
      @Wouter vanEck: Installing the ORCA tool is only available for Windows SDK Components for Windows Installer Developers (a 2.5 GB download, 4.5 GB installation). I'll wait for a different solution...
    • "Service Pack 1 for Visual Studio 2010 must be installed. Do you want to download it now?" +1
    • Since I'm watching this thread for solutions, I figure I may as well throw a bump in, too. 
      "Service Pack 1 for Visual Studio 2010 must be installed. Do you want to download it now?" +1
    • One other thought: I'm running Visual Studio from a solid state drive mounted in a directory other than Program Files. Is the MSI looking for SP1 to be installed there?
    • Same problem here. Is anyone of the developers interested in a logfile produced by the following command?
      msiexec /l*vx "Web Standards Update.log" /i "Web Standards Update.msi"
    • Have a look at Wouter vanEck's comment on Reviews tab. It helped me getting this installed.
    • +1 The same problem.
      Could be that the mentioned solution on Reviews tab work, but I don't want to install a whole new SDK just to get this working.
    • I'm glad there exists a workaround to the problem, but like the others said, installing a 2.5GB SDK to modify the MSI doesn't seems reasonable. Maybe someone with the SDK installed already can do the mod and post the MSI on the DL? 
    • Hi,it can't work in vs2010 10.0.40219.1 SP1Rel zh-CN version.
      i can't open css file when i install the installed.
      how can i fix it?
    • +1
    • I had the same problem. I've used "InstEd It!" (, 5.6MB) rather than Orca to edit the MSI following Wouter's directions and I've been able to install the MSI properly after that.
    • @Rhanan didn't know about that tool, thanks. It will for sure come in handy in the future.
    • Did the Wouter fix via instEdit to work around the SP1 is not installed bug. Got the "Operation could not be completed" bug when attempting to open any css file. My installed folder is not on C:\ OS drive, so copied the contents of C:\Program Files\Microsoft Visual Studio 10.0\Common7\Packages to the Packages folder in my installed folder, ovewriting any existing files, which resolved the issue. Seems to work but cannot say if this is valid!
    • Had installed CSS 3 intellisense (, later installed VS SP1 and started getting the "Operation could not be completed" bug. 
      Uninstalled CSS3 Intellisense, tried to install this package but ran into the "Service Pack 1 for Visual Studio 2010 must be installed" problem, worked around it with Wouter's directions via instEdit and now I can edit CSSs again uff...
    • Edit the msi with InstEd did works perfectly for me! Brilliant.
    • A solution to the installation problem:
      save the msi installation on the drive you've installed Visual Studio 2010. Then open it and enjoy CSS3 and HTML5 support :)
    • I was having the same problem. ORCA msi tool method works.
  • Default to CSS3?
    2 Posts | Last post February 28, 2012
    • For HTML, under Tools->Options->Text Editor->HTML->Validation, we can choose "Target" to be "HTML5".
      Unfortunately, there seems to be no such setting for CSS.  How do I tell VS.NET to default to CSS3 for CSS files?
    • Check in
      or see -> Toolbars -> style sheet and change the CSSX.X for CSS3.0 and ready.
      Revisa en
      o ver -> barra de herramientas -> hoja de estilos y cambia el CSSX.X por CSS3.0 y listo.
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