[BUG] After successfully creating a custom domain name for API Management, it deletes itself

Question

Hello everyone,

I want to create a custom domain name for my Consumption tier API Management instance. After adding the hostname for type Gateway with a managed certificate, I setup my DNS record (CNAME) to point to the APIM URL and a TXT record to verify my ownership of the domain. After saving everything in the API Management instance, I get the notification that the hostnames were updates successfully. But the newly added domain removes itself in the portal after a few seconds, ending in the initial state of the default APIM URL. I validated that the URL does not work by doing a POST request, ending in a 404 error. This persists even after three days of waiting, in case the configuration takes some time to load to every server.

TL;DR The portal notified me of the successful creation of the hostname, but the hostname wasn't created and can't be used.

Answer 1

Morris Kurz Sure, you are welcome. Glad it got resolved. Microsoft Q&A has policy: Accept an answer that question authors cannot accept their own answers and hence I am posting your answer in case you like to accept so that it can benefit others facing similar issues.

Resolution:

We found that adding managed certificate failed with an error due to presence of a CAA record that does not authorize Digicert. Morris Kurz followed the steps described in DNS configuration and created a CAA domain record with the value: 0 issue digicert.com to resolve the issue.

I hope this helps.