I’ve added a custom domain to App Platform and it works as expected except that the www subdomain won’t load, I get the error:
“This site can’t provide a secure connection www.[my custom domain] uses an unsupported protocol. ERR_SSL_VERSION_OR_CIPHER_MISMATCH”
I’ve tried adding a CNAME record for www as an alias of the custom domain (via the networking tab) and that didn’t resolve it.
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Click below to sign up and get $200 of credit to try our products over 60 days!
DNS changes might take up to 24 hours in order to update due to DNS cache, general propagation time and etc.
You can use our DNS lookup tool and check if the CNAME for the www record is resolving and if not check if you’re actually making the DNS changes via the correct DNS active zone.