Not the answer you're looking for? Service unavailable. There is certificate with private key as PFX on listenner settings. See Configure end to end TLS by using Application Gateway with PowerShell. Few days back , I had to update the Azure backend certificate for authentication in the Application Gateway and i started noticing this error, Backend server certificate is not whitelisted with Application Gateway.. Opinions, tips, and news orbiting Microsoft. with open ssl all looks okey i can see all chains. Most of the browsers are thick clients , so it may work in the new browsers but reverse proxies like Application Gateway wont behave like our browsers they only trust the certificates if the backend sends the complete chain. However when I replace all the 3 certificates to my CA cert, it goes red and warm me "Backend server certificate is not whitelisted with Application Gateway" Quickstart - Configure end-to-end SSL encryption with Azure Application Gateway - Azure portal, articles/application-gateway/end-to-end-ssl-portal.md, https://www.domstamand.com/end-to-end-ssl-solution-using-web-apps-and-azure-application-gateway-multisite-hosting/, https://learn.microsoft.com/en-us/azure/application-gateway/ssl-overview#for-probe-traffic, Version Independent ID: 948878b1-6224-e4c5-e65a-3009c4feda74. Message: The root certificate of the server certificate used by the backend doesn't match the trusted root certificate added to the application gateway. But if this message is displayed, it suggests that Application Gateway couldn't successfully resolve the IP address of the FQDN entered. For more information about how to extract and upload Trusted Root Certificates in Application Gateway, see Export trusted root certificate (for v2 SKU). Learn how your comment data is processed. 7 19 comments Add a Comment Nillsf 4 yr. ago For example, check whether the database has any issues that might trigger a delay in response. Find centralized, trusted content and collaborate around the technologies you use most. Solution: If you receive this error, follow these steps: Check whether you can connect to the backend server on the port mentioned in the HTTP settings by using a browser or PowerShell.

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