Not able to delete a custom domain in front door

Akshay Chauhan 46 Reputation points
2021-04-28T18:29:52.633+00:00

I have a custom domain associated with front end in azure front door which I am not able to delete. On deleting I get error
Failed to update the Front Door 'somename'. Error: Cannot delete frontend endpoint "somedomain" because it is still CNAMEd to front door "somename.azurefd.net". Please remove the DNS CNAME records and try again. Why am I getting this error. How to resolve it?92222-tempsnip.png

Azure Front Door
Azure Front Door
An Azure service that provides a cloud content delivery network with threat protection.
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Accepted answer
  1. msrini-MSFT 9,256 Reputation points Microsoft Employee
    2021-05-07T19:48:53.66+00:00

    Hi,

    When you created the custom domain for the first time, you must have added a CNAME record in your registrar or in your Azure DNS which is still pointing to the Azure Front Door's FQDN. You need to first remove the CNAME which you have created. Then try to delete the AFD again.

    2 people found this answer helpful.

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  1. Akshay Chauhan 6 Reputation points
    2021-09-22T14:30:22.387+00:00

    Microsoft has introduced this breaking change (11231). But it seems like it can be disabled by registering feature flag: 

    az feature register --namespace Microsoft.Network --name BypassCnameCheckForCustomDomainDeletion
    1 person found this answer helpful.
  2. Lucas Luengo 1 Reputation point
    2021-09-22T13:53:19.74+00:00

    Me too. I think this happens when you have a wildcard subdomain.
    I checked several times and there is no CNAME binded to the endpoint I'm trying to delete.

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