Google App Engine custom domain is not activating Google-Managed SSL

Question

I successfully configure custom domain for my application on Google App Engine. I can access my app by going to : http://www.myapp.com/.

However, on my custom domain dashboard, Google-Managed SSL is getting a lot of time to activate (I have a loading circular progress that is spinning for 2 hours now).

Before adding custom domain, it says that auto generated SSL can take several minutes to be activated. It has been two hours now. Is it a normal behavior ?

Answer 1

After validating the domain to google DO NOT rush the SSL certificate adding process. Wait one hour or two after validation, then proceed to add the certificate.

Answer 2

I have my domain with Google Domains. When adding a subdomain only add the 'sub' portion, e.g. sub.domain.com, only the 'sub' is added as a CNAME record. Same with 'www' for the main domain e.g. www.domain.com. I had previously added 'sub.domian.com' which gcloud App Engine DNS couldn't find.

Answer 3

I removed the custom domain and retry the process from the beginning (validating, adding the custom domain) and certificates have been generated in 1 minute.