Outlook for Windows and Teams (work & school) routinely won't start. I'm out of ideas.

Ian Brown 1 Reputation point

Hello Team,

I'm having an issue with a specific user wherein Outlook for Windows (version 2209) will not progress past the Loading Profile stage on the opening card dialog. Furthermore, this issue only occurs after Outlook has either crashed OR is closed manually. Outlook opens successfully on the first startup of each Windows session and then fails to load on subsequent startups within the same session. On top of that, Teams routinely fails to start--also not progressing past the Loading Profile stage on its opening card dialog. But, it happens less often than Outlook's failures and doesn't always coincide with Outlook's failures.

Here's what I've tried:

  • Updated Office apps to the latest version
  • Office Click-to-Run quick repair
  • Office Click-to-Run online repair
  • Deleted and rebuilt .ost and .nst files in Outlook
  • Deleted and rebuilt entire Teams cache folder.
  • Completely uninstalled Teams and the Teams Machine-Wide Installer. Then reinstalled Teams.
  • Run the Microsoft Support and Recovery Assistant
    • Successfully ran the Add Teams meeting add-in for Outlook scenario. No change in behavior
    • Attempted to run the Outlook won't start scenario. However, when I attempt to open Outlook with the scenario recorder running, Outlook fails to even display its opening card. I only see its server activity icon in the system tray.

This is on a brand new Latitude 5520 machine recently assigned to the user. The machine is wirelessly connected to a gigabit enterprise network and the connection is strong.

Does anyone have additional troubleshooting steps for this situation? I've exhausted my knowledge here.


Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Faery Fu-MSFT 17,121 Reputation points Microsoft Vendor

    Hi @Ian Brown ,

    Welcome to our forum!

    Consider that you have done some troubleshooting measures, you could try the following:

    • Run Outlook in safe mode: type outlook.exe /safe in run command and see if there is any difference.
    • Corrupted profiles can also cause such problems, and it is recommended that you create a new profile:
      Go to Control Panel > Mail > Show Profiles
      Add a new profile, select "Prompt for a profile to be used"
    • Perform a clen boot

    If you still need further help, feel free to contact us.

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