Stop C000021A Using MoveFileEx MOVEFILE_DELAY_UNTIL_REBOOT

• Microsoft Windows NT Workstation version 4.0
• Microsoft Windows NT Server version 4.0

SYMPTOMS

A computer running Windows NT 4.0 may fail with the following stop message:

STOP: c000021a {fatal system error}

CAUSE

MoveFileEx using the MOVEFILE_DELAY_UNTIL_REBOOT flag appears to corrupt the registry on Windows NT 4.0 after a certain unknown number of calls. Attempting to reboot in this situation fails, and the Windows NT 4.0 Emergency Repair Disk is required to recover from the failure.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Windows NT version 4.0.
This problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack. 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

MORE INFORMATION

For additional information, please see the following article in the Microsoft Knowledge Base:

ARTICLE-ID: Q156669
TITLE : How to troubleshoot a STOP 0xC000021A

Additional query words: 0x21a 0xc000021a hang hung prodnt

Keywords : ntstop kbbug4.00 kbfix4.00.sp2 NTSrvWkst
Version : 4.0
Platform : winnt
Issue type :