Problem statement
When using an Auth0 Social connection to log in, the following error message appears for certain Gmail accounts:
"Access blocked: auth0.com has not completed the Google verification process"
Cause
The usual cause of this error is that the application to be used along with Google needs to complete and approve a verification process from Google.
Solution
Submit a verification request to Google to make the application work with a Google connection. Once Google approves this verification, the error message will disappear.