Troubleshoot CMC

Start here to diagnose any CMC issues.

If the extension  .tab  appears after your CMC extension (e.g. A00271.MW3.TAB), you will need to do the following:

This ability is not available in Windows 10.

1. Double-click on My Computer.

2. Choose Tools > Folder Options…

3. Click on the tab entitled, File Types.

4. Click on the New button.
   
   The Create New Extension dialog box appears.

5. In the File Extension field, enter the extension for your CMC, e.g. MW3 or .WIZ

6. Click on the OK button on this screen and the Folder Options screen.

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