Hello,
I've deployed an application gateway in my subscription, all is working fine and I've several services published to internet and linked with the backend. Right now I've a problem, I've a listener over https and the communication with the backend also have to be made over https, then I have to include a certificate inside "http settings" I was trying to add the same certificate that I had uploaded to the listener but checking documentation, it seems that I have to upload the root certificate and I've followed this guide:
https://docs.microsoft.com/en-us/azure/application-gateway/certificates-for-backend-authentication
But when I try to save the configuration, I get an error message similar to: This certificate is not a trusted root certificate............ What Is the problem? Have I to add this certificate to some trusted certificate store in Azure?
Thank you very much.


