Hi Acurtin,
Thank you for reaching out to Microsoft Q&A forum.
This is a known incident that can occur when the local authentication state becomes stuck. Please follow the steps below:
1. Clear Outlook Local State
- Press Windows + R to open the Run dialog.
- Type:
olk.exe --clearLocalState - Press Enter and wait for the process to complete.
- Restart Outlook and sign in again.
2. Restart your computer, then open Outlook.
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