Hi There I have recently installed PRTG and been struggling to get WMI working properly. A brief description of the environment: I have multiple servers in a workgroup, not a domain, on Vmware virtual environment. Servers are split across 3 DMZ's and all traffic strictly controlled via firewall rules. PRTG installed on a server within "Zone 1", Virtual server. In general I use SNMP, however i need to monitor some windows services. WMI Tester are able to communicate with the server and standard WMI sensors such as WMI UTC Time works, however when trying to add a "WMI service" sensor in PRTG I get an error "80041003: The current user does not have permission to perform the action".