Root Cause: Changing srvquery=1 changes the behavior so that the Automation Engine (AE) isn't sending keep alive signals. The srvquery parameter of 1 can only be used for Agent's built by Automic in-house at the current time.
Update to a fix version listed below or a newer version if available where additional functionality is planned to optimize Agent connectivity.
Fix Status: Released
Automation Engine 12.1.0 - Available
1. Edit ucsrv.ini and change srvquery=0
2. Restart each CP/WP
3. Start agent