Program Manager Disappears After Log On, Log Off or Shutdown

 Last reviewed: September 28, 1995
Article ID: Q137426
The information in this article applies to:
  • Microsoft Windows NT Workstation version 3.51
  • Microsoft Windows NT Server version 3.51

SYMPTOMS

One or both symptoms may occur in Windows NT 3.51:

  • When you log on, log off, or shut down Windows NT, Program Manager does not appear, or disappears. When you press CTRL+ALT+DEL, the Windows NT Security dialog box does not appear. Network connections to the Windows NT computer can still be made.
  • Program Manager disappears and is not in the task list. Programs already started are functional and network connections to the Windows NT computer can be made.

CAUSE

This problem occurs when the following events occur: 

   - Process A creates cursor
   - Process B references cursor
   - Process A exits
The cursor still points to the freed pointer of process A. If the freed pointer is uncommitted, any call to FindExistingCursorIcon results in memory access violation and the calling process is halted.

RESOLUTION

To correct this problem, install the latest U.S. Service Pack for Windows NT version 3.51.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 3.51. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): 

   S E R V P A C K

KBCategory: kbui kbbug3.51 kbfix3.51.sp1
KBSubcategory: ntui ntdistrib ntutil
Additional reference words: prodnt 3.51

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Last reviewed: September 28, 1995
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