Close all office applications on your computer to repair outlook. Go to the Start icon on your desktop’s taskbar and open control panel. Select Category view and go to the programs section to fix why won't my outlook open. Select uninstall program next and right-click Microsoft Office. Now choose Change and select Online Repair or Repair. Select Yes if a user account control prompt appears. Restart Outlook to finish the process and check if your Outlook is working fine.

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