Many times you get this error when you do .load sos
0:080> .load sos
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.
You can solve this by doing .loadby sos clr, this means you are trying to load sos.dll from the same location you loaded clr.dll from.
This is a different error
0:091> .loadby sos clr
Unable to find module 'clr'
The first question I ask myself is whether I am debugging a 32 bit application with 64 bit debugger, if not the I do lm to list all loaded modules
In this case I saw that clr.dll is not loaded, but mscorwks is this is because the application I am debugging is using .net framework 2.0
start end module name
00000000`1b6d0000 00000000`1b9cf000 System_Data (deferred)
00000000`1e230000 00000000`1e279000 System_Transactions (deferred)
00000000`714b0000 00000000`71556000 System_Core (deferred)
00000000`77610000 00000000`777b9000 ntdll (private pdb symbols) d:\symbols\ntdll.pdb\
00000642`ffaf0000 00000642`ffb09000 mscorsec (deferred)
000007fe`dae40000 000007fe`db68b000 System_Data_ni (deferred)
000007fe`e07b0000 000007fe`e0945000 System_DirectoryServices_ni (deferred)
000007fe`e0950000 000007fe`e0a5d000 System_EnterpriseServices_ni (deferred)
000007fe`e0a60000 000007fe`e0b45000 System_Transactions_ni (deferred)
000007fe`eb380000 000007fe`ec25c000 mscorlib_ni (deferred)
000007fe`ec260000 000007fe`ecbfc000 mscorwks (deferred)
0:091> .loadby sos mscorwks
Unfortunately sometimes is it not that simple, I get this nasty error a lot
Failed to load data access DLL, 0x80004005
1) you have a recent build of the debugger (6.2.14 or newer)
2) the file mscordacwks.dll that matches your version of mscorwks.dll is
in the version directory
3) or, if you are debugging a dump file, verify that the file
mscordacwks_<arch>_<arch>_<version>.dll is on your symbol path.
4) you are debugging on the same architecture as the dump file.
For example, an IA64 dump file must be debugged on an IA64
.cordll -ve -u -l works most of the time
if that still doesn't work, try following the steps here
Hope that helps!