Visual Studio 2008 Hotfix Released! Performance and Editor fixes

ASP.NET Team Blog
10 February 2008

Microsoft has just released the hotfix (KB946581) that many of you have been waiting for. It fixes a number items including the issues mentioned in a previous post. I know from emails that they've worked hard to get this ready for shipping. You can find more details and download the small (2.6 mb) file here: 

Your Websites, Our Passion! : Downloadable Hotfix: Performance and Editor fixes for Microsoft Visual Studio 2008 and Visual Web Developer Express 2008

I recommend taking a note of Scott's summary in case you run into any problems with this fix. I've been running a version of it for a couple of weeks and it's been fairly stable. Here is the list of items that have been fixed:

Issues that are fixed: We have fixed several bugs in this hotfix. All bug fixes are listed below.

HTML Source view performance

  • Source editor freezes for a few seconds when typing in a page with a custom control that has more than two levels of sub-properties.
  • “View Code” right-click context menu command takes a long time to appear with web application projects.
  • Visual Studio has very slow behavior when opening large HTML documents.
  • Visual Studio has responsiveness issues when working with big HTML files with certain markup.
  • The Tab/Shift-Tab (Indent/Un-indent) operation is slow with large HTML selections.

Design view performance

  • Slow typing in design view with certain page markup configurations.

HTML editing

  • Quotes are not inserted after Class or CssClass attribute even when the option is enabled.
  • Visual Studio crashes when ServiceReference element points back to the current web page.

JavaScript editing

  • When opening a JavaScript file, colorization of the client script is sometimes delayed several seconds.
  • JavaScript Intellisense does not work if an empty string property is encountered before the current line of editing.

Web Site build performance

  • Build is very slow when Bin folder contains large number of assemblies and .refresh files with web-site projects.


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Geoff Davis

Mehul, Nice catch and thanks for keeping us all in the loop.


11 February 2008


Nice to read this news.


12 February 2008

Still insanely slow for me...

Although I think Resharper might be causing half the issues with a possible massive memory leak (even though I've got it disabled now...)

12 February 2008
Mehul Harry (DevExpress)
Mehul Harry (DevExpress)

Hello Li,

Not sure what the issue might be for you but try a clean install of VS2008 and this hotfix and see if the issue disappears. Internally we've tested this hotfix for weeks and it has performed very well for us. I hope you're able to find the cause of the problem.

13 February 2008
Al Scott
Al Scott


Your problems is most likely your Resharper install. I had the same issue, before I un-installed it.

16 February 2008

Wow... indeed this hotfix performs very well. My.Settings editor in VS2008 has been really slow for me but now it works pretty fast!

Great job devs.

13 April 2008
Michael Marriott

How can microsoft release stuff thats so slow and then charge one for it! Is there no user testing there?

13 May 2008
Mehul Harry (DevExpress)
Mehul Harry (DevExpress)

Hi Michael,

You may want to see the VS2008 SP1 Beta:

However, it is still a beta.

13 May 2008

on November 20, 2008 at 4:02  Raj

Hi folks

I had everything working correctly until I decided to install IE7. To fix it I uninstalled IE7 and yet it wouldn’t work properly.

What I figured out though is that if you run the project once and then try editing it behaves correctly. This behaviour has been consistent past couple of days.

Basically the solution is to run the project as soon as you open it.

Hope it works for you guys. I spent 4 hrs trying to fix this issue and was repenting why I bothered installing IE7.



19 November 2008
Intellisense for large VB.NET projects in VS2008 | keyongtech

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18 January 2009

Thanks.This hotfix solved some of the  speed issues  for us.

20 January 2009

After installing this hotfix VS 2008 still get stuck when I go to Design tab of an aspx page that contains GridView.

Someone, help please.

12 March 2009

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