Unable to Access All Global Administrator Accounts – Microsoft 365 Education Tenant Recovery

Call Microsoft’s Thailand support number 1800 012 705 and request a service request for Microsoft 365 tenant lockout, explicitly asking for escalation to the Data Protection/Tenant Recovery team.^1^

What to say to support

Since the previous telephone attempt did not complete the recovery process, use this precise description to distinguish the issue from an ordinary password reset:

This is a Microsoft 365 Education tenant lockout. No Global Administrator account is accessible, and the former partner has no active GDAP permissions. We cannot open a request through the Admin Center. Please create a service request for the affected tenant and escalate it to the Data Protection/Tenant Recovery team for high-assurance ownership verification and restoration of Global Administrator access.

If the automated system asks:

• Product: Microsoft 365 for business/organization
• Account type: Work or school account
• Are you an administrator? Yes
• Are other administrators available? No
• Request: Create a service request for complete tenant lockout

Microsoft’s tenant-recovery guidance specifically directs organizations that cannot access any portal to call customer service. Microsoft then performs high-assurance identity verification and, after validating ownership, helps a designated Global Administrator regain access to the existing tenant rather than issuing a new tenant.^2^

Your former reseller cannot perform the recovery without active GDAP access or the appropriate roles. Where no other Global Administrator and no usable partner relationship exist, the tenant owner must contact Microsoft Support directly.^3^

Prepare for ownership verification

Have the following available when the recovery agent contacts you:

• Tenant’s initial onmicrosoft.com domain
• Verified custom domain
• DNS access sufficient to create a verification record when instructed
• College registration or other official institutional documents
• Name, title, institutional email, and telephone number of the authorized representative
• Previous subscription, invoice, reseller, or billing details, if available
• Names or sign-in addresses of former administrator accounts, if known
• Any case/reference number from the earlier telephone contact

Provide account, billing, identity, and tenant information only through the private support case or direct communication from the assigned agent—not in this public Q&A thread. A closely matching tenant-lockout case confirms that Data Protection engagement is performed through a support ticket and that the team contacts the organization by email or telephone.^4^

If telephone support still cannot create the case

As a fallback, a matching Microsoft Q&A escalation advises creating a separate Microsoft 365 Business trial tenant, signing in to its Admin Center, and selecting Help & support to open a ticket.^5^

In that request:

1. State that the ticket is being opened on behalf of a different, inaccessible Education tenant.
2. Include the affected tenant’s organization and domain names, but no passwords or MFA secrets.
3. Request that the agent associate/create the case for the affected tenant.
4. Request transfer to Data Protection/Tenant Recovery.
5. Supply an accessible institutional email and telephone number for direct verification.

Use this only if the trial is available and telephone escalation continues to fail; do not add the college’s custom domain to the temporary tenant.

After access is restored, configure at least two Global Administrators with distinct credentials and authentication methods, plus documented emergency-access accounts, to prevent another complete lockout.^3^

References

1. Contact Microsoft customer support
2. Plan for tenant recoverability
3. Preventing tenant lockouts
4. Account / Tenant Access Recovery of Sign-in issues (Entra ID). - Microsoft Q&A
5. Microsoft 365 Tenant locked out – no Global Admin access due to MFA – tenant recovery required - Microsoft Q&A