Microsoft Security | Microsoft Entra | Microsoft Entra ID
A cloud-based identity and access management service for securing user authentication and resource access
Tenant-wide PTA authentication outage, all admins locked out, AADSTS80002, Data Protection cases stalled 5+ days
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Jerry Rehor
0
Reputation points
Requesting moderator assistance escalating an existing Data Protection / Tenant Recovery case.
Situation: A production Microsoft 365 tenant (church organization, 572 users) has been in a complete authentication outage since September 12, 2026. The tenant uses Pass-through Authentication (PTA). The PTA agent was lost during a server migration and does not exist on any server in the environment. Every web-based sign-in for every user returns AADSTS80002. All admin accounts are hybrid synced and cannot authenticate. No cloud-only break-glass account exists.
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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