Within node management trying to add a node as soon as I type the name within Polling Hostname or IP Address it displays a dialog box "Can not resolve <NAME> to an IP address". The node is not configured at all not by name or ip. What could this be?
Just a suggestion, you can export the IP list, in an Excel file, change what you need to change in the excel sheet and import it back.
Click Start Menu
Click SolarWinds Orion
Click Orion Service Manager
Start All Services
This fixed it for me.