Cannot find the Rundll32.exe file when you open Control Panel


When you open Control Panel, you may receive an error message that is similar to the following:
Windows cannot find C:\Windows\Rundll32.exe make sure you typed the name correctly and try again.


This issue occurs because of a missing or corrupted Rundll32.exe file. This issue may also be caused by a virus.


To resolve this issue, follow these steps:
  1. Put the Windows XP CD ROM disk in the CD ROM drive.
  2. Click Start, and then click
  3. Type expandX:\i386\rundll32.ex_ c:\windows\system32\rundll32.exe in the Open box, where X is the letter of your CD ROM Drive.
  4. Restart the computer.

More Information

For more information or if you suspect you might have a virus, click the following article number to view the article in the Microsoft Knowledge Base:

306913 Error message caused by Sircam32 virus when you start a program


Article ID: 812340 - Last Review: Sep 23, 2011 - Revision: 1