How do i remove or delete a assigned custom domain in Azure Web App?

Question

I recently tested Azure Web Apps with Traffic Manager when accessing the web app via the traffic manager DNS name i got a blue screen in the browser 404 error and it said i need to configure a custom domain please see attached. I then assigned to custom domain for the web App but i now cannot remove the custom domain from the web App any ideas how i can do this?

Answer 1

Thanks for reaching here! If I have understood right you want to remove your assigned custom domain name if so you may refer to below steps:

Using Azure portal:

If your hostname has SSL bindings you first need to remove that then delete the hostname.

Go to web app -> Custom Domains -> App Service Domains -> Click on the domain -> Delete it.

Use below PowerShell script to Remove all custom domain:

$webApp = Get-AzWebApp -ResourceGroupName "<Resource-Group-Name>" -Name "<App-Name>";  
$webApp.HostNames.Clear();  
$webApp.Hostnames.Add($webApp.DefaultHostName);  
Set-AzWebApp `  
  -ResourceGroupName "<Resource-Group-Name>" `  
  -Name <App-Name> `  
  -HostNames $webApp.HostNames;  

This will remove all custom hostnames and leave only the default one.

If you want to remove a specific hostname for the collection you could use:

$webApp.HostNames.Remove("your_hostname_goes_here")  

Please let us know if further query or issue remains.