Hi,
I'm having trouble registering one specific host, having succeeded with 6 others within the same network. That inability started in with Monitor 2024, and has persisted in Monitor 2025 (having upgraded yesterday).
Perhaps the strangest part is that it doesn't appear to be a communications issue between the host/agent and Monitor Server, as authentication succeeds, i.e. I receive the '[ success ] Successfully authenticated to ArcGIS Monitor Server' message, but no second message confirming registration. All other hosts register within a few seconds. I've left this one trying (maybe? or maybe it's failed quickly and just sitting there) for hours without any change.
The Monitor logs show no relevant warnings/errors, and I've not been able to find anything in the lower levels (though it's hard to see through the noise). Nothing obvious in Event Viewer on either the agent or server machines either.
Looking at the agent IDs of the registered hosts there is a gap, i.e. it's 1,2,3,4,6,7, so I tried registering as an existing agent (5), but that fails.
Our production portal, datastore, and hosting server reside on this host.
Any recommendations or things to check much appreciated.
