Visual Studio 2005 Script debugging is broken after installing IE8 on Windows Vista

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After you install Internet Explorer 8, you may no longer be able to perform client-side script debugging using Visual Studio 2005. This issue is discussed in


Microsoft has confirmed that this is a problem in Visual Studio 2005.


In most scenarios, setting the registry value TabProcGrowth to a DWORD value of 0 is sufficient to resolve this problem.

However, if you are using Windows Vista, you will need to follow ALL of the steps below to resolve this issue:

  1. Install VS 2005 update for Vista from
  2. Install Visual Web Developer Express. Note that you will not need to actually use it and can remove it after it is installed. Visual Web Developer express is the free Express version for VS2008 and can be installed from
  3. Set the registry value TabProcGrowth to a DWORD value of 0 under HKCU\Software\Microsoft\Internet Explorer\Main
  4. Run Visual Studio 2005 with elevated permissions

 This is a problem in Visual Studio 2005; the problem does not occur with Visual Studio 2008.


Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 2000608 - Last Review: 01/15/2015 11:13:52 - Revision: 5.0

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