Ali's Knowledge Base

In Windows NT4, 2000 and XP it is possible to initialize Windows in Error Mode, a special debugging mode of the “stripped down” Safe Mode.
In Error Mode a small popup window (basically a core dump) shows up whenever an application crashes, similar (but more detailed) to the well known “This program performed an illegal operation” error message.
To enable this feature, run Regedit and go to:
HKEY_LOCAL_MACHINESystemCurrentControlSetControlWindows
Modify the “ErrorMode” DWORD [REG_DWORD] Decimal value from 0 to 1.
Reboot when done.
ErrorMode valid Decimal values:
0 = both system and program error popups enabled (default).
1 = system error popups disabled, program error popups enabled.
2 = both system and program error popups disabled.”