Cannot collect data from some target Windows machines with Control Compliance Suite (CCS).
"RPC Server is unavailable"
"WMI failure: Connecting to \\SERVERNAME\root\default"
"Access is denied"
"The Network Path was not found"
Depending on your version of Windows, these are the following ways to repair/rebuild/reset WMI on your machine.
Some other sites with great info on troubleshooting WMI issues.