Error received after upgrade of ARS version from 7.1 to 7.4
Cannot retrieve the Two-Factor Authentication configuration information from the Active Roles Administration Service. the version of the Administration Service is incompatible with the client's version.
Ensure that the latest version of the Administration Service is installed and running.
There can 2 reasons:
ARS 7.1 version is still installed. Hence, ARS 7.4 console is trying to connect to that old version service.
Timeout occurred because TLS 1.2 was turned-ON.
Solution (Reason 1):
1. Uninstall ARS 7.1 or old version and then try to connect again.
2. Enter the Service manually. Check attached snapshot. (Do not try to connect via localhost).
Solution (Reason 2):
1. Disable TLS 1.2 in the environment.