Azure AD Application Proxy Connector reports: The Connector failed to establish connection with the service.

Prashant 31 Reputation points
2022-11-01T21:53:26.667+00:00

Hi all.

Azure AD Application Proxy Connector reports: The Connector failed to establish connection with the service.

This suddenly started occurring.

I have ensured all Prereqs are still in place. There is no outbound blocks to my knowledge. The server is Windows Server 2022, fully patched and has been running for many many months without incident. I have even re-installed clean the latest connector.

Please advise.

Thank you.

Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. Bananaphone 16 Reputation points
    2022-11-02T11:04:53.327+00:00

    Same here, problem since approx. 16 hours.

    Gateway Timeout:
    The service is unable to reach the connector.

    Root cause: No active connectors present in the group.

    The services on the servers are working properly - no errors and warnings in the event log.

    Reinstalling connector did not help.

    Connectors in the portal report Active status.

    @Everybody please create supporttickets in your admincenter, so microsoft gets to work on this issue...

    1 person found this answer helpful.
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  2. Federico Piazza 21 Reputation points
    2022-11-02T11:39:57.1+00:00

    I just talked to MS support and they confirmed that there is a problem on their end with Application Proxy

    1 person found this answer helpful.
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  3. Niemelä Jonathan 16 Reputation points
    2022-11-02T11:57:11.63+00:00

    Our Application Proxies work again. (At the moment)

  4. Prashant 31 Reputation points
    2022-11-02T17:43:57.683+00:00

    This has started occurring again.

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  5. Andy Megan 1 Reputation point
    2022-11-07T16:44:49.727+00:00

    We've had the same issue appear this weekend, preventing staff from logging in using Pass Through authentication. Microsoft have confirmed its an issue affecting multiple customers. In our case we've swapped the Sign in Settings in Azure AD to use Password Hash Sync instead, as a temporary work around which has at least got people working.

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