You also need to know what module the offset belongs too, if you are getting 0xC0000008 (STATUS_INVALID_HANDLE
), then the exception is likely thrown from ntdll.dll, which isn't going to help you debug your program, since what you care about is deeper in the stack.
What you should be doing is have your customer enable LocalDumps, and then send you a minidump file which you can debug.
Sample registry setup:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps]
"DumpFolder"="d:\\miniDumps"
"DumpType"=dword:00000002
"CustomDumpFlags"=dword:00001124