SCOM 2016 with 1 MS in a trusted domain and now trying to connect a untrusted GW management server. I have the root CA, GW server FQDN cert and agent FQDN cert's. I have the GW approval tool in the GW install dir and momcertimport in a separate dir, along
with the GW FQDN cert. I have run momcertimport successfully but in the GW event viewer:
The OpsMgr Connector connected to opsmrg.server.com, but the connection was closed immediately without authentication taking place. The most likely cause of this error is a failure to authenticate either this agent or the server . Check the event
log on the server and on the agent for events which indicate a failure to authenticate
OpsMgr was unable to set up a communications channel to opsmrg.server.com and there are no failover hosts. Communication will resume when opsmrg.server.com is available and communication from this computer is allowed.
I am using the local system account on the GW. I followed:
http://systemcentermvp.com/2017/10/05/step-step-gateway-server-installation-scom-2016/
and
https://docs.microsoft.com/en-us/system-center/scom/deploy-install-gateway-server
I have imported the CA in trusted root CA machine account, the GW FQDN cert is in personal machine account and momimport has the GW FQDN cert. Still get the same error. I can ping the FQDN of the MS and ping it