Prompt
Why can't I publish my app to my custom domain?
Latest observation
Sep 24, 2026
OpenAI APIWeb search: off
There are a few common reasons an app won’t publish to a custom domain. The most likely issue depends on where you’re hosting it and how the domain is set up, but here are the usual blockers:
Common causes
-
DNS not pointing correctly
- Your domain’s DNS records may not be set to the hosting provider’s required values.
- For example, you may need a
CNAME,A record, or verification TXT record.
-
Domain ownership not verified
- Some platforms require you to prove you own the domain before publishing.
-
SSL/TLS not fully provisioned
- The site may be configured, but HTTPS can’t be issued yet because DNS hasn’t propagated or the domain setup is incomplete.
-
The domain is already in use elsewhere
- Another app or service may already be attached to that domain or subdomain.
-
Wrong subdomain/root setup
- Publishing to
example.comvswww.example.comoften requires different DNS records. - Root/apex domains sometimes need special support like ALIAS/ANAME or provider-specific flattening.
- Publishing to
-
Propagation delay
- DNS changes can take minutes to 48 hours to fully propagate, though often it’s much faster.
-
Platform restrictions
- Some app builders only allow custom domains on paid plans, or require a specific deployment state before enabling them.
What to check
- Confirm the exact DNS records your hosting platform asks for.
- Make sure there are no conflicting records for the same domain.
- Wait for DNS propagation if you just made changes.
- Check whether your app/platform has a custom domain verification step.
- Verify that your domain is not already connected to another site.
If you want, I can help troubleshoot it
Send me:
- the platform you’re using
- the exact error message
- whether you’re using
wwwor the root domain - your current DNS records (you can redact sensitive parts)
…and I can tell you what’s wrong.