STOP 0xc000021 in Winlogon.exe When Printing and Running Screen Saver

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While printing large files and the screen saver is activated automatically, you may receive the following blue screen error message:
STOP 0xc000021a in WINLOGON.EXE
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:
Microsoft has confirmed that this is a problem in Windows NT 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5.

Article ID: 219319 - Last Review: 01/10/2015 11:47:37 - Revision: 5.0

  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
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