Hello,
Thank you for posting in Q&A forum.
Check if your Key Vault is set to use "Azure role-based access control" under "Access configuration". It needs to be set to "Vault access policy" instead.
Currently, App Service Certificate supports only Key Vault access policies, not the RBAC model. Source: https://learn.microsoft.com/en-us/azure/app-service/configure-ssl-certificate?tabs=apex%2Cportal#store-certificate-in-azure-key-vault
Best regards,
Jill Zhou
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