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

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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.

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Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
To resolve this issue, use Registry Editor to remove the "NoControlPanel" value from following registry key:

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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.

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