If no other administrator, emergency-access account, or delegated partner can reset your MFA, obtain a tenant-lockout support case from a separate accessible account and request escalation to the Data Protection/Tenant Recovery team.
1. Confirm that tenant recovery is the applicable path
Before escalating, determine whether any of these exist:
- Another Global Administrator
- A Privileged Authentication Administrator able to reset authentication methods
- An emergency-access account
- A Microsoft partner with active delegated administration and the required password/MFA-reset role
If one exists, that administrator or partner should restore access. If none exists—or none is accessible—Microsoft treats this as a tenant lockout. Microsoft Support uses a high-assurance process to verify tenant ownership and then restores access to the existing tenant; it does not create a replacement tenant.^1^
The six-digit Azure prompt versus the eight-digit personal-account code closely matches another accepted Q&A tenant-lockout case where the Data Protection team was engaged.^2^
2. Open the case without using the locked tenant
Since the Brazil telephone route already redirected you online, use an unrelated, working account to contact Microsoft Support:
- Open the Portuguese Microsoft Support contact page.^3^
- Sign in with a different working Microsoft account if required.
- Select the business/technical-support path.
- State that the affected Azure tenant cannot be used to authenticate or create a support request.
- Ask the agent to create a tenant-lockout case and assess escalation to Data Protection/Tenant Recovery.
Use wording similar to:
I am locked out of an existing Microsoft Entra tenant because its administrator MFA registration is unusable. No accessible administrator, emergency account, or delegated partner can reset the authentication method. I cannot sign in to create an Azure support request. Please create a tenant-lockout case and escalate it to the appropriate Data Protection/Tenant Recovery team for ownership verification and administrator-access recovery.
If a phone attempt is necessary, use the published customer-support directory.^4^ A closely matching Q&A escalation recommends waiting through the introductory message and answering the automated routing prompts approximately as follows:
- Problem: Authenticator
- Product: Office 365 for business
- Account type: Company/business
- Administrator: Yes
- Another accessible administrator: answer accurately
- Need a service request: Yes
If that still cannot produce a case, a documented community workaround is to create a separate Microsoft 365 Business trial tenant with another email address, open Microsoft 365 Admin Center → Support → New service request, and submit the request on behalf of the locked tenant. Cancel the trial afterward to prevent future charges.^5^
Do not publish tenant IDs, subscription IDs, invoices, card details, identity documents, or contact information in Q&A. Supply them only through the private channel established by Support.
3. Prepare ownership evidence
Have the following available when Support contacts you:
- Tenant primary domain and tenant ID, if known
- Azure subscription ID and billing-account details
- Billing email and invoice numbers
- Company or individual-developer information used during enrollment
- Limited payment evidence requested by Support
- A reachable email address and phone number
- Recent sign-in timestamps, errors, or correlation IDs, if available
- Evidence of domain control if requested
Only Microsoft Support can perform the ownership-verification and tenant-recovery stage. Community contributors cannot reset MFA or access the tenant, although moderators in closely matching cases have opened a support ticket for Data Protection follow-up.^6^
4. Restore Artifact Signing after tenant access returns
Because the Identity Validation expired on November 7, 2026, it can no longer be renewed as an unexpired validation. After access is restored:
- Sign in to the Azure portal.
- Confirm your account has the Artifact Signing Identity Verifier role.
- Open Artifact Signing account → Identity Validation.
- Create a new Identity Validation and complete the full verification process.
- Allow 1–20 business days for review.
- Associate the completed validation with the relevant certificate profile.
Identity Validation can only be completed in the Azure portal, not through Azure CLI. Expiration stops certificate renewal and therefore signing for the associated profiles.^7^
If the completed validation does not become available to the existing certificate profile:
- Open Artifact Signing account → Certificate Profile.
- Delete the affected profile.
- Recreate it with the same name and select the new Identity Validation.
Caution: recreating the certificate profile changes its EKU. Use this only if the new validation does not appear; deleting an Identity Validation is irreversible and can disrupt linked signing profiles.^7^
References
- Plan for tenant recoverability
- Locked Out as Sole Global Admin - Microsoft Q&A
- Entre em contato conosco - Suporte da Microsoft
- Contact Microsoft customer support
- Sole Global Admin locked out of Entra ID tenant — Authenticator MFA loop / tenant lockout - Microsoft Q&A
- Global Admin Locked Out: MFA Loop / Tenant Lockout - Need Data Protection Team Assistance - Microsoft Q&A
- Renew or delete Artifact Signing Identity Validations