This method, described in article http://support.microsoft.com/kb/887013, for enabling vss debug tracing is not working for me. I created entry in thre Registry, even set TraceForceFlush to 1. Then I used Win32 SDK example vshadow.exe to create a snapshot for C:\ and then in second cmd, I ran "vssadmin list shadows" and I was able to see the snapshot ID that was created by vsshadow.exe. I was able to verify that IDs matches too. But no trace file is created. I tried on more than one servers, restarting VSS, rebooting server. But I can't see trace file created. Does anyone have any idea what could be the problem. I'm using windows 2008 r2.

Use the Vsstrace.exe tool for VSS tracing in Windows Server 2008 R2. Using Tracing Tools with VSS http://msdn.microsoft.com/en-us/library/dd765233(v=vs.85).aspx Microsoft Windows SDK for Windows 7 and .NET Framework 4 http://www.microsoft.com/download/en/details.aspx?id=8279