WMI Error

Can you successfully add this device via SNMP or ICMP? Firewalls could well be the problem here, but it's hard to pin down whether the issue is with WMI ports, or if it's something more basic (EVERYTHING is being blocked between your management network and the network segment your monitored device resides on.

Another thing to consider is using the SolarWinds Agent to poll these devices. You get the added benefit of QoS information on the nodes as well as only having to worry about a single port for communications (TCP 17778 from remote device to poller for agents configured for agent initiated communications, and 17790 for agents configured for server initiated agent communications).

To add to what silverbacksays,  

  Go through the steps in this KB.  The wbem test tool is great for troubleshooting stuff like this.

Testing WMI Connectivity - SolarWinds Worldwide, LLC. Help and Support

Verify WMI settings on the system being monitored - SolarWinds Worldwide, LLC. Help and Support

Server does not respond to WMI - SolarWinds Worldwide, LLC. Help and Support

Cheers for the backup bscherer​

WoW .. loads of useful information. thanks alot., much appreciated. I will keep u updated if I'm still having issues on WMI. Cheers again

did ur issue get resolved? I m having same issue for few Win 2008 servers....

Theys see the permissions, I think you to user permission check solver this  and port see  What protocol and port number is used for WMI monitoring?

my issue was solved, it was a windows related problem. I had to change the Remote UAC LocalAccountTokenFilterPolicy registry setting