By default, Windows Server 2003 (and Windows XP) does not display a message box when it detects an application error.
To configure it manually:
1. Start / Run / drwtsn32 / OK.
2. Check the Visual Notification box.
3. Press OK.
NOTE: When the message box is displayed, no new windows or messages can be display, but background processes are not affected.
NOTE: If you do not press a button on the message box with 5 minutes, the message is removed.
To configure Visual Notification via the registry:
1. Open a CMD.EXE window.
2. Type REG ADD HKLM\SOFTWARE\Microsoft\DrWatson /V VisualNotification /T REG_DWORD /F /D 1 and press Enter.
NOTE: See How can I configure Windows Server 2003 to play a sound when it detects an application error?