We just set up a load balancer in our test environment to test failing over to a standby Author instance. As part of the process, we copied our Author environment from an old server to a new one and redirected the load balancer to point to the new server. Even though we haven't made any changes to the configurations on the author or the load balancer, we are unable to access the author through https at https://authorservername:4502 or https://loadbalancername.com. Everything seems to work correctly when we access the author instance through http at http://authorservername:4500. We've done this same process of copying over the instance and updating the load balancer destination on our publisher instances and everything has worked out smoothly.
The error.log files have a repeating error message that reads:
*INFO* [qtp624383331-2189] org.apache.sling.auth.core.impl.SlingAuthenticator getAnonymousResolver: Anonymous access not allowed by configuration - requesting credentials
When accessing the instance through https://authorservername:4502 we get-
ERR_INVALID_HTTP_RESPONSE in the browser and nothing showing up in the error.log file