Microsoft KB Archive/172575

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Running RegClean 4.1 Causes Access Violation in Windows NT 4.0

ID: Q172575

The information in this article applies to:

  • Microsoft Windows NT Server version 4.0
  • Microsoft Windows NT Workstation version 4.0
  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server


When you run RegClean version 4.1 in Windows NT 4.0, you may receive the following error message:

Application Error
Exception: access violation(0xc0000005), address:0x00414053


This error message occurs because RegClean version 4.1 is not compatible with Windows NT 4.0.


To resolve this issue, obtain the following updated file:

Regclean.exe version 4.1a, dated 12/30/97

The following file is available for download from the Microsoft Download Center. Click the file name below to download the file:


For more information about how to download files from the Microsoft Download Center, please visit the Download Center at the following Web address

and then click How to use the Microsoft Download Center.

Microsoft used the most current virus detection software available on the date of posting to scan this file for viruses. Once posted, the file is housed on secure servers that prevent any unauthorized changes to the file.

NOTE: You should back up your registry before you run RegClean. For information about how to back up your registry, please see the following article in the Microsoft Knowledge Base:

Q156328 Description of Windows NT Emergency Repair Disk


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

Q147769 INFO: RegClean 4.1 Description and General Issues

Additional query words: Dr. Watson

Keywords : kberrmsg kbfile kbtool nt32ap NTSrvWkst
Version : WINDOWS:2000; winnt:4.0
Platform : WINDOWS winnt
Issue type :
Technology : kbvcSearch

Last Reviewed: August 10, 2000
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