Article ID : S500031529 / Last Modified : 11/04/2018

What to do if an error message appears when trying to access Control Panel?

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Err Msg: Windows cannot find C:\Windows\Rundll32.exe. Make sure you typed the name correctly and try again.

Please follow the steps below to resolve this symptom:
1. Click Start and then click Run.
2. Enter "expand C:\Windows\i386\rundll32.ex_c:\windows\rundll32.exe" and click OK.
Note: Do not leave spaces between "rundll32.ex_" and "c:\windows\rundll32.exe".
3. Restart Windows.

For more information, please see the following solution in Microsoft's technical support website:
Title: Cannot Find the Rundll32.exe File When You Open Control Panel
Last reviewed: 25 Jan 2003