When trying to open the Device Manager (Control Panel – System and Maintenance – System), the following error may occur:
This file does not have a program associated with it for performing this action. Create an association in the Set Associations control panel.
When you get this error, there’s probably something wrong with your file association *.msc. In most cases, the association seems to be correct, but it isn’t. The best practice for this issue is re-importing the correct register settings. Follow the instructions below to import the correct settings:
- Click Start, click Run, type Regedit and click OK
- On the left side, navigate to HKEY_CLASSES_ROOT
- Make a backup of your HKEY_CLASSES_ROOT. To do this, right-click HKEY_CLASSES_ROOT, choose Export, and save it as “old-classes_root.reg“
- Delete these registry keys. To do this, right-click the keys and select Delete
- The incorrect settings are now deleted.
Download the MSC fix for Vista. This registry file contains the correct file type association settings for Windows Vista.
- Navigate to the file you have just downloaded. Double-click. A window will pop up whether you are sure to add the settings. Click Yes.
- Your file type association for MSC-files is now restored to its default. Opening your Device Manager should be working again.