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How To Change the Default Outlook Data File


  • Outlook Desktop Sync syncing to the wrong Calendar/Contact Group in Outlook
  • Changing the default Outlook data file


  • Windows
  • Microsoft Outlook

Additional Information:

Clio's Outlook Desktop Sync will only sync with a computer's Default Outlook Data File

Note: Changing the default data file should not be required by most Outlook users. This should only be attempted by experienced users.


  1. In Windows click on the Windows icon in the bottom-left corner
  2. Type mail into the search box
  3. Click on Mail from the search results
  4. Click on Data Files...
  5. Click on the Data Files tab
  6. Select the data file you wish to set as default
  7. Click Set as Default


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