An Azure service that provides a cloud content delivery network with threat protection.
@Babarske ,
Welcome to the Microsoft Q&A forum. I understand you are trying to Migrate your Classic AFD to standard/premium AFD and you are getting the error Frontdoor application does not have read permission for the key vault.
As per the Prerequisite section of the Migration documentation here can you please confirm if you have added the Microsoft.AzureFrontDoor-Cdn as an app in your Azure Active Directory and have granted Microsoft.AzureFrontDoor-Cdn access to your Key Vault?
You can follow the steps mentioned here for implementation.
Note- The Application Id of 205478c0-bd83-4e1b-a9d6-db63a3e1e1c8 is predefined by Azure for Front Door Standard and Premium tier across all Azure tenants and subscriptions. Azure Front Door (Classic) has a different Application Id.
Hope this helps! Please let me know if the issue still exists. Thank you!