AddCertificate_Orchestrator fails for ASP.NET application

[christiantricarico]

Hello,
maybe I miss something but I can't understand why I get this error message.
I used the acmebot function for another static website in the same resource group without problems.
Any advice?

[shibayan]

Have you added IP restrictions or AAD authentication so that the App Service cannot be accessed from outside?

[christiantricarico]

I finally fixed this issue.
It was caused by old extra IPv6 settings in the DNS settings.
I removed those IPv6 settings and it worked.