How do I get Outlook to actually initialize again?

Try these steps in order for classic Outlook on Windows:

1. End stuck Office processes.
   • Right-click the taskbar and open Task Manager.
   • On the Processes tab, end all Office processes.
   • Try starting Outlook again.
2. If Outlook opens but hangs at loading profile, disable presence features.
   • In Outlook, go to File > Options > People.
   • Clear:
     • Display online status next to name
     • Show user photographs when available
   • Restart Outlook.
3. Start Outlook in safe mode and disable add-ins.
   • Press Windows key + R.
   • Type Outlook and start it.
   • If Outlook loads properly, go to File > Options > Add-ins.
   • Record the currently enabled add-ins, then clear all selected check boxes and select OK.
   • Restart Outlook normally.
   • If Outlook works, re-enable add-ins one at a time until the problem returns. Disable the add-in that causes the issue.
   • Do not choose Remove for add-ins during troubleshooting; disable them only.
4. Reset the navigation pane.
   • Close Outlook.
   • Press Windows key + R.
   • Run: Outlook.exe /resetnavpane
   • Then try Outlook again.
5. Create a new Outlook profile.
   • In Control Panel, open Mail.
   • Select Show Profiles.
   • Add a new profile and start Outlook using that profile.
   • If Outlook starts normally, the original profile was likely corrupted.
   • Warning: removing a profile deletes offline cached content, so back up data files first.
6. Repair Outlook data files.
   • Exit Outlook.
   • Run the Inbox Repair Tool (scanpst.exe) using the instructions in Repair Outlook Data Files (.pst and .ost).
7. If Outlook freezes when opening files or sending mail, check antivirus integration.
   • Disable Outlook integration or Outlook antivirus add-ins in the antivirus product.
   • Warning: changing antivirus settings can reduce protection. Use that workaround carefully.
8. If the issue started after Outlook showed gray loading boxes and then stopped launching, use the classic Outlook startup troubleshooter.
   • On Windows 10 or later, on the same PC as classic Outlook, run the Get Help startup troubleshooter from Microsoft Support.

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