Required Information:
✓ Full name and contact information
✓ Company/Organization name
✓ Tenant domain name (e.g., yourcompany.onmicrosoft.com)
✓ Tenant ID (if known)
✓ Payment method details (last 4 digits of credit card)
✓ Approximate tenant creation date
✓ List of key users/admins who had access
- Call Microsoft Support Immediately
--> Phone: 1-800-865-9408 (Microsoft 365 Business Support)
--> Say: "Tenant owner lockout due to compromised admin account"
--> Request: Escalation to Account Recovery Team
--> Have Ready: Payment records, domain ownership proof, tenant details
- Gather Proof of Ownership
Since you're the original owner and payer, collect:
--> Credit card statements showing Microsoft charges
--> Original purchase confirmations
--> Domain registration records (if you own the domain)
--> Any tenant setup emails or documentation
- Domain-Based Recovery (Fastest Option)
If you own the domain associated with the tenant:
--> Access your domain registrar
--> Be ready to add DNS verification records
--> This is Microsoft's preferred verification method
Key Recovery Advantages You Have:
--> Financial ownership (you're paying the bills)
--> Original account creator
--> Continuous billing history
--> Retirement documentation (proves legitimate transition)
Expected Timeline:
--> Initial response: Same day
--> Verification process: 3-7 business days
--> Account restoration: 1-2 business days after verification
--> Success rate: 80-90% for legitimate owners with proper documentation
Critical Security Actions Once Recovered:
--> Immediate password change for all admin accounts
--> Enable MFA on all administrative accounts
--> Audit all users - remove any unauthorized accounts
--> Check email forwarding rules for malicious redirects
--> Review Azure billing for unexpected resource usage