LAN Manager Logon Scripts Cause System Integrity Violations (90343)


The information in this article applies to:

  • Microsoft Windows for Workgroups 3.1
This article was previously published under Q90343

SYMPTOMS

You may receive a system integrity violation error while running a Microsoft LAN Manager logon script.

CAUSE

Microsoft LAN Manager logon scripts are batch files that are run by the LAN Manager domain controller upon verification of user logon. This LAN Manager feature is set up on the LAN Manager server.

Logon scripts can be enabled in Windows for Workgroups by installing LAN Manager as a secondary network and setting the logon feature in Control Panel. When Windows for Workgroups logs on and the user is verified by the LAN Manager domain controller, the logon scripts are run automatically in an MS-DOS virtual machine (VM). These scripts are given a maximum of 30 seconds to run before Windows for Workgroups regains control and finishes loading. If the LAN Manager logon script runs for more than 30 seconds, you receive the system integrity violation error.

WORKAROUND

To work around this problem, either shorten the logon scripts or disable this feature in Control Panel, or on the LAN Manager domain controller.

MORE INFORMATION

Usually LAN Manager logon scripts are used to reconnect network shares automatically for the user. Because Windows for Workgroups has persistent net connections, it is no loner necessary to use these scripts for that purpose and it's better not to do so.

Sometimes logon scripts are used to run programs such as virus scanners or other utilities from the server. In this case, you may want to create a batch file (or edit your AUTOEXEC.BAT file) that starts the Windows for Workgroups real-mode redirector, connects to the server where the virus scanner exists, runs it, and disconnects the share. For example: 
   c:\windows\net start full
   net use v: \\server\share
   v:\virus\scan.exe
   net use v: /d
   c:\windows\net stop

To Disable Logon Scripts in Control Panel

  1. Run Control Panel and choose the Network icon.
  2. Choose the Networks button.
  3. Select Microsoft LAN Manager in the Other Networks In Use list box.
  4. Choose the Settings button.
  5. Clear the Log On To LAN Manager Domain check box.
See your LAN Manager administrator if you want to disable logon scripts on the LAN Manager domain controller, although this is not necessary if you have disabled it in Control Panel.
Modification Type:MajorLast Reviewed:9/30/1999
Keywords:KB90343
©2002 Microsoft Corporation. All rights reserved.