Cannot delete custom domain because it is still directly or indirectly (using "cdnverify" prefix) CNAMEd to CDN endpoint

Ben McFadden 31

I want to delete an Azure CDN endpoint, but I can't because Azure won't permit me to delete the custom domains associated with it. When I try, either via the portal or Azure CLI, I get this error:

Cannot delete custom domain "[custom domain name]" because it is still directly or indirectly (using "cdnverify" prefix) CNAMEd to CDN endpoint "[endpoint name]". Please remove the DNS CNAME record and try again.

I deleted the CNAME records more than 16 hours ago.

I have executed this command to no avail:

az feature register --namespace Microsoft.Network --name BypassCnameCheckForCustomDomainDeletion

I have verified that the feature is registered.

Ben McFadden 31 Reputation points

2022-11-24T04:24:42.63+00:00
I've found a tedious workaround. First create a new endpoint. Then for every custom domain:

Create a new CNAME entry pointing to the new endpoint

Attempt to add the custom domain to the new endpoint (pre-validation will succeed, but the step will fail with the message "We ran into a problem when we tried to create your custom domain '[custom domain]'. Make sure your settings are right, and then try again.")

Delete the custom domain from the original endpoint

It will now be possible to delete the original endpoint.

You could probably just do points 1-2 and then delete the endpoint without deleting the custom domains individually, but I didn't test that.
Ben McFadden 31 Reputation points

2022-11-24T04:47:23.533+00:00

I went through all of the above in order to associate my custom domains with a new endpoint, but now I can't do that. When I try, the hostname passes the validation check, but after I click the Add button I get the following error:

We couldn't find a DNS record for '[custom domain]' that points to '[endpoint hostname]'. Before you can associate a domain with this CDN endpoint, you need to create a CNAME record with your DNS provider for '[custom domain]' that points to '[endpoint hostname]'.

To be clear, the CNAME record exists (as verified by the validation check).
Ben McFadden 31 Reputation points

2022-11-24T05:14:02.467+00:00

Now I'm getting a different result when I try to create the custom domain:

Couldn't create CDN custom domain
We ran into a problem when we tried to create your custom domain '[custom domain]'. Make sure your settings are right, and then try again.
KapilAnanth-MSFT 45,111 Reputation points Microsoft Employee

2022-11-24T17:10:19.687+00:00

Hi @Ben McFadden ,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you are facing issues with deleting custom domain in your CDN.

I see from your comments, you have carries out multiple troubleshooting steps.
And now you would like to create a new custom domain.

Correct me if this is wrong.

To troubleshoot the exact issue, I think we will need a specialized 1:1 session, where a support engineer can have a screen share session to pinpoint the issue. If you have a support plan you may file a support ticket, else please do let us know, we will try and help you get a one-time free technical support.

Cheers,
Kapil

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Ben McFadden 31 Reputation points

2022-11-25T05:38:11.307+00:00

I don't know whether this was resolved manually on Microsoft's side or whether it happened automatically, but after Microsoft contacted me privately I found that everything began working as it should.
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KapilAnanth-MSFT 45,111 Reputation points Microsoft Employee

2022-11-25T08:24:18.66+00:00

Hi @Ben McFadden ,

Thanks for keeping us updated.

I am glad the issue is now resolved.

Cheers,
Kapil
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Cannot delete custom domain because it is still directly or indirectly (using "cdnverify" prefix) CNAMEd to CDN endpoint

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