Check the service status of NSX Guest Introspection Platform Host Agent (MUX).
NSX Guest Introspection Platform Host Agent (MUX) Service Status
Check to see if the service is running on the ESXi host.
For example:
# /etc/init.d/nsx-context-mux status nsx-context-mux is running
If you see that the service is not running, start it by running the command, /etc/init.d/nsx-context-mux start or restart the service by running the command, /etc/init.d/nsx-context-mux start.
Note that it is safe to restart this service during production hours as it does not have any great impact, and restarts in a couple of seconds.
To check the logging level currently in use, run nsxcli -c get service nsx-context-mux logginglevel.