Unable to Start Control Panel Tools After You Use TweakUI to Disable "Show Control Panel" (274849)

The information in this article applies to:

Microsoft Windows Millennium Edition

This article was previously published under Q274849

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 try to start any of the tools in Control Panel, you may receive the following error message:

This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator.

CAUSE

This issue can occur if you are running TweakUI, and you have previously clicked to clear the Show Control Panel check box on the Start Menu Settings tab.

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, use Registry Editor to remove the "NoControlPanel" value from following registry key:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\ Policies\Explorer

MORE INFORMATION

Note that TweakUI is not a part of Windows Millennium Edition (Me) and is not supported by Microsoft. For this reason, Microsoft Product Support Services (PSS) is unable to answer questions about TweakUI.

Modification Type:	Minor	Last Reviewed:	9/28/2004
Keywords:	kberrmsg kbprb kbProd2Web KB274849