I have gone through all the articles on this site that refer to the WMI RPC Server Unavailable but still have an issue with a single Win XP SP2 machine. Some fields do return information to the scan, but most do not.
I have turned off the firewall on that machine and made sure the WMI service is running. I was going to look at the Group Policy however mine does not have the full path specified in order to make any changes. I downloaded the OpenFirewallForWMI script that is supposed to solve that error however it comes up with a \"no more endpoints available for the endpoing mapper. Code: 800706D9\". I am at the latest version of Pro.