HomeAzureAzure Tip #9 – Application Gateway Backend Certificate not whitelisted Error

Azure Tip #9 – Application Gateway Backend Certificate not whitelisted Error

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.”

Something that you will see missing is microsft docs is having a default site binding to a SSL certificate without the SNI enabled.

Ensure that you create a default website in the IIS with-in the VM without the SNI enabled and you should not see this error.

PS : Don’t forget to upload the CER file to the HTTP settings in ApplicationGateway before you do the Health Check.


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