Attempting to verify credentials on a node, however, after clicking the checkmark for the specified node then click the tab I am left with the error...
could use some advice??
I found this article that seems to have the same error.
https://support.solarwinds.com/Success_Center/Network_Performance_Monitor_(NPM)/Message_Center_Times_Out_With_Error_%3AU…
Are you sending SNMP traps/syslog data to NCM? That could be the culprit.