Microsoft KB Archive/92555

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WFWG: Null Password Bypasses Login

Article ID: 92555

Article Last Modified on 10/13/2003


  • Microsoft Windows for Workgroups 3.1
  • Microsoft Windows for Workgroups 3.11

This article was previously published under Q92555


Microsoft Windows for Workgroups allows multiple users to use the same machine through the use of PassWord cache Lists (PWLs). Windows for Workgroups also supports null passwords (an empty password).


If Windows for Workgroups has the Logon At Startup option selected in Control Panel, and the previous user has a PWL file with a null password, the Logon dialog box is bypassed at startup.

To allow a different user to log on to the Windows for Workgroups machine, the previous user must be logged off. To do this, use the Logoff button in the Control Panel.

Windows for Workgroups always provides the previous user's name at the logon prompt during Windows for Workgroups startup.

Additional query words: 3.1 3.10 by-passed 3.11 nul startup

Keywords: KB92555