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KB944899 - Performance problem while stepping through downloaded Source Code
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A Hotfix is a product update package with one or more updated product files that fix a specific product problem.
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Please be aware this Hotfix has not gone through full Microsoft product regression testing nor has it been tested in combination with other Hotfixes.
Please carefully review the associated Hotfix KB article to verify the fix is the one needed and there are no known compatibility or installation issues. You may also want to contact a Microsoft Support Professional at
FIX: This hotfix addresses a performance problem when stepping through Source Code downloaded via a Microsoft Reference Source Server. Additionally, this hotfix prevents an unnecessary EULA dialog that can occur repeatedly on debugger startup.
This patch is installable on 32-bit and 64-bit systems. If installed on a 64-bit Vista or later system, a manual step is required to be performed after installing the patch. Create an empty file using notepad called “symsrv.yes” that resides next to symsrv.dll. By default this file is installed in the following locations:
\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\Remote Debugger\x64
\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\Remote Debugger\ia64
If 32 or 64-bit remote debugging components were copied to a remote machines prior to installing the patch, the symsrv.yes file needs to be placed alongside those installations as well.
Additional Information about the issue resolved by this Hotfix can be found in its Knowledge Base article at
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at
Apr 12 2008 at 2:04 AM
, version 5
Dec 23 2009 at 1:28 PM
what about Visual Studio 2005?
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Mon Jan 14 2008 at 8:00 AM
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