If the population has failed and the log shows an HTTP 401 or 403 status error message related to the wrong user and password, it means that the authentication profile used to connect to the Nexthink Engine is not properly configured. The error message looks like this:
Method failed: (/2/query/) with code: 401 - Invalid username/password combo
In such case, please ensure the username and password configured in the guided setup on the Configure the credentials section is correct.
Hint: the user and password to be used are those used to connect to the Nexthink Web API V2.0, for instance, via the NXQL Editor.