HELP - I can't get into my admin account!

Select Other verification options or Sign in another way on the verification screen and use any previously registered SMS, voice-call, security-key, or other method; if none appears or it also fails, use the recovery branch matching your account type. [^1^](https://support.microsoft.com/topic/-account-verification-system-is-having-trouble-error-message-when-you-try-to-sign-in-by-using-a-work-or-school-account-d5030271-026f-07f6-0c84-e4d8edbbc97b ""Account verification system is having trouble" error message when you try to sign in by using a work or school account")

Work or school Microsoft 365/Entra account

If this is your organization’s only Global Administrator account, contact Microsoft business support by phone and request a Data Protection/tenant recovery case. Reinstalling Authenticator does not reconnect the old MFA registration, and you cannot administratively reset your own unavailable method while locked out.

1. Open Microsoft’s current country/region phone-number list and call the appropriate business support number. ^2^
2. Describe the issue precisely:
   • “I have lost access to the only Global Administrator account.”
   • “The password is accepted, but Microsoft Authenticator is no longer registered and MFA cannot be completed.”
   • “There are no other administrators or working verification methods.”
   • “I need a tenant-recovery ticket routed to the Data Protection team.”
3. Have these ownership-verification details ready:
   • Organization and tenant/domain information
   • Administrator sign-in name
   • Subscription and billing/payment details
   • Registered phone number
   • An alternate reachable email address
4. If prompted by the automated system, choose business email, Microsoft 365/Office 365 for business, technical support, and create a service request. This sole-admin Authenticator-loop escalation is the documented resolution in the matching Microsoft Q&A case. ^3^

Microsoft’s business-support documentation confirms that phone support is available without first opening an online admin-center request. It also notes that verification may use a code sent to the email address or phone number registered in the organization profile. ^4^

If the subscription was purchased entirely through a Microsoft partner or reseller, contact that partner instead; Microsoft directs partner-purchased subscriptions to the partner for support. ^4^

If another privileged administrator actually exists

That administrator can reset the affected account’s MFA registration:

1. Sign in to the Microsoft Entra admin center.
2. Go to Entra ID → Users.
3. Select the locked account.
4. Open Authentication methods.
5. Select Require re-register MFA.
6. At the next sign-in, register Authenticator again and add another authentication method.

Because the affected account is an administrator, the assisting account must hold a sufficiently privileged role—such as Privileged Authentication Administrator or Global Administrator—rather than an ordinary Authentication Administrator. The re-registration action removes existing Authenticator, phone, and software OATH methods so they can be configured again. ^5^ ^6^

Personal Microsoft account

If the address is a personal Microsoft account rather than an organizational Microsoft 365/Entra administrator account, do not request tenant recovery. Use Microsoft’s personal-account sign-in helper or Get Help from the customer-support page; support agents cannot directly bypass account security or change account details. ^2^

After access is restored

Create at least two cloud-only emergency access (“break-glass”) Global Administrator accounts and reserve them for lockout scenarios. Microsoft recommends two or more emergency accounts specifically to prevent complete administrative lockout when normal MFA devices are unavailable. ^7^

References

1. "Account verification system is having trouble" error message when you try to sign in by using a work or school account
2. Contact Microsoft customer support
3. Locked out of Admin Centre due to Authenticator failure - Microsoft Q&A
4. Get support for Microsoft 365 for business
5. Manage user authentication methods for Microsoft Entra multifactor authentication
6. Preventing tenant lockouts
7. Manage emergency access accounts in Microsoft Entra ID