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Outlook Data File Cannot be accessed

· One min read

I have found this issue occurs commonly when upgrading from Outlook 2007 to 2010.


  1. Open Outlook 2010
  2. Click File (top left)
  3. Click Account Settings
  4. Click Account Settings
  5. Click Change Folder
  6. Click the “+” on the left of the folder name to reveal hidden subfolders.
  7. Click Inbox
  8. Click Ok
  9. Close all open dialog and restart Outlook.