I am running a Windows 2019 virtual server for my Application Proxy connector. I have been able to register the connector with Azure AD, but it is in an inactive state and I cannot get the connector service to run. Event Viewer is giving Error ID 12015 "The connector failed to establish connection with the service."
I have verified that ports 80 and 443 are open and configured for outbound connectivity in the firewall. Also, no URLs are blocked. As a troubleshooting step, I have also disabled the firewall altogether but still cannot get the service to run.
Any suggestions on what is preventing this service from running?