Microsoft Security | Microsoft Entra | Microsoft Entra ID
A cloud-based identity and access management service for securing user authentication and resource access
I am unable to connect my Entra Connector to my Tenant DOmain, I am getting an error saying Entra Connector is down. Service authentication failed
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Admin Sangeetha Puligella
0
Reputation points
In Falcon Identity Protection , I am unable to connect my Entra Connector to my Tenant Domain, I am getting an error saying Entra Connector is down Service authentication failed
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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Carolyne 1,151 Reputation points Microsoft Employee2026-01-28T20:16:15.7966667+00:00 Could be a case of blocked outbound connectivity (ports 80/443), proxy/firewall restrictions, or insufficient permissions for the account used to register the connector. Verify the connector service is running, network access to Microsoft Entra endpoints is allowed then try to re‑register the connector using an account with Application Administrator permissions, then check the connector logs for authentication failures
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