I have dozens of Custom WMI sensors using WQL to query WMI working perfectly. They all use the default 'CIMV2' namespace.
However, I cannot get WQL to work (via PRTG) for the 'WebAdministration' namespace. Note, the same WQL will work in the Passeler WMI Tester using the 'WebAdministration' namespace.
The problem is the 'WebAdministration' namespace is marked with the RequiresEncryption flag. This cannot be changed in DCOM.
The event log states: Access to this namespace might be denied if the script or application does not have the appropriate authentication level. Change the authentication level to Pkt_Privacy and run the script or application again.
So it seems that the PRTG is using the default authentication level when querying WMI. Please can you advise how to get around this?