Microsoft KB Archive/220881

= Repeated Logon Prompt in Windows NT 4.0 =

Article ID: 220881

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition

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This article was previously published under Q220881



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When you attempt to log on to Windows NT 4.0, you may not be logged on. Instead, the logon prompt may be displayed again.



CAUSE
This behavior can be caused by an invalid registry entry.



RESOLUTION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To resolve this issue, delete the registry value listed below.

 Start Registry Editor (Regedt32.exe). From the HKEY_LOCAL_MACHINE\SYSTEM subkey, go to the following key:

CurrentControlSet\Control\Session Manager\Environment

 Delete the following entry:

Value:

Type: REG_DWORD

Data: %systemroot%



NOTE: You may need to gain access to this registry by first performing a parallel installation of Windows NT. For information about parallel installations, please see the following article in the Microsoft Knowledge Base:

126690 Windows NT 4.0 Setup Troubleshooting Guide

Additional query words: loop looping

Keywords: kbenv kbprb KB220881

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