WSUS client computers restart automatically without any notification when updates are installed on the client computers

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Article ID: 931265 - View products that this article applies to.
Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows registry
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SYMPTOMS

Consider the following scenario:
  • You use a Microsoft Windows Server Update Services (WSUS) server to deploy updates on WSUS client computers.
  • A time deadline is set on the WSUS server for the updates to be installed on the WSUS client computers.
  • The updates are installed on the WSUS client computers when the time deadline expires that is set on the WSUS server.
In this scenario, the WSUS client computers restart automatically without any notification even though the WSUS client computers are configured not to restart automatically without a notification.

When the WSUS client computer restarts automatically, you will see the entries that resemble the following in the %windir%\WindowsUpdate log file:

FATAL: MSI DLL version is 2.0. Version 3.1 is required.
WARNING: Failed to evaluate Installed rule, updateId = {xxxxxxxx-xxxx-xxxx-xxx-xxxxxxxxxxxx}.xxx, error = 0x80241001
<date> <time> 3600 e18 EEHndlr FATAL: MSI DLL version is 2.0. Version 3.1 is required.

Note %windir% represents the path of the Windows system folder. Typically, C:\Windows is the path of the Windows system folder.

CAUSE

This issue occurs because the updates that are deployed on the WSUS client computers require that Microsoft Windows Installer 3.1 is present on the WSUS client computers.

If Windows Installer 3.1 is not present on the WSUS client computers, Windows Installer 3.1 is downloaded from the WSUS server and installed on the WSUS client computers, regardless of the WSUS server approval status.

Installation of Windows Installer 3.1 on the WSUS client computers causes the WSUS client computers to restart because a restart is required for Windows Installer 3.1 to function correctly.

RESOLUTION

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To resolve this issue, follow these steps on the WSUS client computers:
  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
  3. In the details pane, right-click NoAutoRebootWithLoggedOnUsers, and then click Modify.
  4. Type 1 in the Value data box, and then click OK.
  5. Exit Registry Editor.
  6. Restart the WSUS client computers.

Properties

Article ID: 931265 - Last Review: March 9, 2007 - Revision: 1.0
APPLIES TO
  • Microsoft Software Update Services 1.0
Keywords: 
kbexpertiseadvanced kbtshoot KB931265

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