Dear @Jim Jones,
Thank you for reaching out to Microsoft Q&A forum.
I am genuinely sorry to hear about this difficult and concerning situation. Being unable to access your email for four months is deeply frustrating and impacts your ability to work, and I appreciate you providing the detailed YAML output to help diagnose the underlying technical problem.
As a forum moderator, I genuinely wish I could directly access your account or delve into the backend systems to diagnose and fix this for you. However, our role here is limited to providing general guidance and solutions that can be applied by users.
Since you haven’t specified your account type, I may not be able to provide an exact solution. However, assuming you're using a Work/Business account managed by an organization, you may consider the following steps:
- Clear Browser Cache and Cookies (Most Critical Step)
Your browser is likely storing a corrupted or expired authentication token, which it sends with every access request, leading to the 401 status.
- Completely clear the cache, cookies, and stored website data for the time range "All time."
- You can do this via the three dots next to your profile picture > Settings > Clear browsing data.
- Try Incognito/InPrivate Mode: After clearing, try logging in again using a private browsing window (Incognito in Chrome, InPrivate in Edge) to ensure no extensions or residual cache files interfere.
- Try a Different Browser: If Edge/Chrome fails, try Firefox or another browser entirely.
- Contact your IT Administrator
The Microsoft 365 Global Administrator for your organization is the only person who can resolve server-side issues affecting user accounts. You must contact them immediately. If you don't know who your IT administrator is, please refer to this article: How do I find my Microsoft 365 admin? - Microsoft Support
The administrator needs to perform the following checks within the Microsoft 365 Admin Center:
- License Verification: Confirm that your Exchange Online license is still active and properly assigned to your user account. A 401 status can occur if the license was inadvertently removed or expired.
- Authentication Reset: Clear all your current authentication methods and tokens.
- Sign-Out Everywhere: Force your account to sign out of all active devices and browser sessions.
- Multi-Factor Authentication (MFA) Reset: If MFA is enabled, the Admin can reset this for your account. This clears all old settings and forces a clean setup on your next login attempt.
- Password Reset: The Admin should perform a remote password reset for your account, which forces the creation of a clean security token.
Your immediate step is to contact your organization's IT support or the person who manages your organization's Microsoft accounts.
For additional assistance, use this link to find the appropriate contact number: Global Customer Service phone numbers - Microsoft Support
I truly hope you get your issue resolved swiftly. Please know that even though I can't directly intervene, directing you to the correct, specialized support is the most effective help I can provide from my position. Thank you for your patience and understanding. I'm looking forward to your reply.
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