Deployed Web App only works without "www." subdomain

Question

Hello there, I have a web app deployed on Azure that works if I just type in my domain as (example) "pololinger-s.com". But "www.pololinger-s.com" gives me the Microsoft 404 website not found screen. I configured the domain's DNS on GoDaddy.com according to:

Tutorial: Map an existing custom DNS name to Azure App Service
Creating a Web Site in Azure With a Custom Domain Name

At GoDaddy I set my DNS as follows:

I also added a asuid.www TXT entry with my verification ID.

I'm a little bit confused as I also looked at Azure App Service: How to configure a custom domain from 2013. And it seems as if every tutorial has a different combination of DNS records that are supposed to be working.

What am I missing?

Answer 1

@Pololinger You'll need to setup both domains (pololinger-s.com and www.pololinger-s.com) explicitly setup in Azure as custom domains. It sounds like you've only explicitly setup pololinger-s.com in the Azure portal.

Also, on an unrelated note, I see you are using both an A record and CNAME records. Please note that unless you need an A record, we typically advise against using A records as it reduces the concern that your IP address might change down the road.

Please let us know the results of setting up www.pololinger-s.com as it's own domain in your custom domains blade in the Azure portal.