all. I’m currently using App Service, and sometimes I encounter sudden 403 errors. During these incidents, some users can still access the service, while others cannot. Those who cannot access it find that they can usually do so again after waiting about 3 to 20 minutes.

Our plan with App Service is Basic, so it seems unlikely that we are hitting any quota limits.

One point of concern is that we are using a custom domain with App Service and our name resolution is handled by Azure’s Private DNS Resolver. If anyone knows what might be causing this issue, I would appreciate your help.