Tenant lockout – only Global Admin lost MFA device (Authenticator)

Cooper Beutel 0

I am the only Global Administrator in our Microsoft Entra (Azure AD) tenant.

MFA is required and the only registered method was Microsoft Authenticator on a lost/reset phone.

I cannot sign in to Entra/Azure/M365 admin portals to reset security info.

Request: Please escalate to Microsoft Support Data Protection to verify ownership and reset MFA registration.

Tenant primary domain: PII removed

Tenant region/country: Australia

I can provide the affected Global Admin UPN and contact details via private message.

Sridevi Machavarapu 16,140 Reputation points Microsoft External Staff Moderator

2025-12-22T01:56:10.6333333+00:00
Hello Cooper Beutel,

To assist you further and forward this to Microsoft’s Data Protection Team, we need some additional information. As this involves Personally Identifiable Information (PII), please share the following details with us via private message only (do not post publicly):

Contact phone number (including country code)

Contact Email address

Email address (affected account)

Country

Time zone

Tenant domain name (e.g., contoso.onmicrosoft.com or verified custom domain)

Tenant ID

Azure subscription ID or billing information associated with the tenant (this helps confirm ownership)

Locale

Once we receive this information, we will forward it to Microsoft’s Data Protection Team for further assistance.

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