I started a remote debug session of console application in vc++ 6 SP5 on NT 4 SP6. There were some incompatibilities with the remote system DLLs and my local ones, but the session was successful. After this session I tried to debug a windows (non-MFC) application on my local computer and got the error: Unhandled exception error (NTDLL.DLL): 0xC0000008: Invalid Handle. Since that time it's impossible to debug a windows application with vc++ 6. Does anybody has any hints?