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windbg and sos help not working.

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Roger Williams

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Feb 12, 2009, 9:00:06 PM2/12/09

hi,

i am trying to find where memory leak is in .net web app. after i load dump
file i type the following:
.sympath SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
.reload

i then tried to load sos by executing
.loadby sos mscorwks which returned no error

however, when i execute !sos.help i receive the following error:
The call to LoadLibrary(sos) failed, Win32 error 0n2
"The system cannot find the file specified."
Please check your debugger configuration and/or network access.

what is the problem? why doesn't help work? i verified that sos.dll is in
the path specified in below .chain output. thanks inadvance.

i then typed .chain and the sos dll is indeed loaded. see below output of
.chain:
Extension DLL search Path:
C:\Program Files\Debugging Tools for Windows (x64)\WINXP;C:\Program
Files\Debugging Tools for Windows (x64)\winext;C:\Program Files\Debugging
Tools for Windows (x64)\winext\arcade;C:\Program Files\Debugging Tools for
Windows (x64)\pri;C:\Program Files\Debugging Tools for Windows
(x64);C:\Program Files\Debugging Tools for Windows
(x64)\winext\arcade;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program
Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files
(x86)\Common Files\Roxio Shared\DLLShared\;C:\Program Files (x86)\Common
Files\Roxio Shared\9.0\DLLShared\;C:\Program Files\Microsoft Network Monitor
3\
Extension DLL chain:
C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\sos: image
2.0.50727.1434, API 1.0.0, built Thu Dec 06 01:24:58 2007
[path: C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\sos.dll]
dbghelp: image 6.10.0003.233, API 6.1.6, built Mon Sep 08 16:52:00 2008
[path: C:\Program Files\Debugging Tools for Windows
(x64)\dbghelp.dll]
ext: image 6.10.0003.233, API 1.0.0, built Mon Sep 08 16:52:05 2008
[path: C:\Program Files\Debugging Tools for Windows
(x64)\winext\ext.dll]
exts: image 6.10.0003.233, API 1.0.0, built Mon Sep 08 16:51:45 2008
[path: C:\Program Files\Debugging Tools for Windows
(x64)\WINXP\exts.dll]
uext: image 6.10.0003.233, API 1.0.0, built Mon Sep 08 16:51:52 2008
[path: C:\Program Files\Debugging Tools for Windows
(x64)\winext\uext.dll]
ntsdexts: image 6.1.6721.1, API 1.0.0, built Mon Sep 08 16:49:48 2008
[path: C:\Program Files\Debugging Tools for Windows
(x64)\WINXP\ntsdexts.dll]

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