Issues around our administratio email on school.onmiscrosoft.com

This page collects the issues (and related solutions/workarounds) linked to the administration account of the Microsoft 365 tenant http://school.onmicrosoft.com/.

Context

• Tenant: my.name@myhttp://school.onmicrosoft.com/
• Involved account: admin email address (specify which one, if needed)
• me and my administrator cannot access since jan 2026

Issues encountered

1. Problem description
   • Symptoms: my email amd my administrator email does not access the domani anymore
   • Error message (if any):
   • 

      

   • When it happens (frequency/time): no wayy to access other theachers have not this issue with the same domain

Impact

• Who is blocked / which services are affected (Outlook, Teams, Entra ID, etc.)
• Urgency:

Attempts already made

• [no way ] Password reset 
•  
• [ no way] Check MFA / sign-in methods
• [no way ] Try signing in from another browser / incognito
• [ ] Check Microsoft service status

Next steps

• [ ] Collect screenshots and error codes see upper image
• [ ] Check sign-in logs (Entra ID) and any blocks (Conditional Access)
• [ ] Open a Microsoft support ticket (if needed)

Notes / references

• Useful links:
• Last updated date: