How to Fix a Rundll Exception Error

1. Download the free RunDLL error correction software (see Resources). This program checks the registry for registry errors and replaces values and the Rundll file if necessary.
2. Double-click the downloaded file. The file is a self-extracting zip file, so the executable file is in the archive.
3. Double-click the executable file. A program runs that asks for you to run a scan of the registry. Click 'Scan' to check the registry for errors.
4. Select 'Fix' to clean the registry and restore RunDLL. The changes in the registry do not take effect until you reboot the computer.