Changing Default Permissions Causes STOP 0xC000021A

 Last reviewed: September 22, 1997
Article ID: Q137400
The information in this article applies to:
  • Microsoft Windows NT Workstation versions 3.5 and 3.51
  • Microsoft Windows NT Server versions 3.5 and 3.51

SYMPTOMS

When you start Windows NT the following STOP error message appears: 

   STOP 0xC000021A {Fatal System Error}
   The Windows Logon Process system process terminated
   unexpectedly with a status of 0xC0000022 (0x00000000 0x00000000)
   The system has been shutdown.
After Windows NT dumps system memory to disk, the computer reboots and the same STOP message reappears.

CAUSE

The file and directory permissions may have been changed on the system root (%SystemRoot%) directory or its subdirectories. Several combinations of permissions may cause this problem. For example, if you set file permissions to Read/Execute or Read-only in the system root directory and all its subdirectories, the problem above occurs.

RESOLUTION

To correct this problem:

  1. Install Windows NT to another directory and start the new version of Windows NT.

  2. Reset the file and directory permissions of the original Windows NT %SystemRoot% directory to the following default permissions:

    NTFS Partition --------------

    Change for the Everyone Group

  3. Shutdown the second installation of Windows NT.

  4. Restart the original version of Windows NT.

  5. Remove the second installation of Windows NT.

Additional query words: prodnt setup user right trap 0xc21a
Keywords : ntboot ntsecurity ntstop kbenv
Version : 3.5 3.51
Platform : winnt

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Last reviewed: September 22, 1997
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