During diagnostic session with SolarWinds Support, I was advised that SolarWinds software has to be installed using local administrator account.
This seems to be an unreal requirement in these days of stringent security regulations and best practices, and Active Directory.
I guess being a domain admin is not sufficient.
I finally was able to logon SolarWinds VM using a local administrator account.
I preceded to run repair for all installed SolarWinds software with repair option.
I can now list [node] resources successfully.
I searched SolarWinds Orion Network Performance Monitor Administrator Guide for "local administrator" and "administrator", and found these instructions:
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Orion Server Software Requirements
SolarWinds recommends that Orion administrators have local administrator privileges to ensure full functionality of local Orion tools.
...
The following procedure installs Orion NPM.
To install Orion Network Performance Monitor:
1. As an administrator, log on to your NPM server.
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To upgrade Orion Network Performance Monitor:
1. If you are using more than one polling engine to collect network information,
shut down all polling engines before continuing.
2. Using the local administratoraccount, log on to the computer on which you
want to upgrade Orion Network Performance Monitor.