Access Denied Problem in WMI for Windows XP only

I have been writing an application to get the details of remote machine like OS Name, Logon User Name etc us开发者_C百科ing WMI Classes.

In our network we have machines with Windows XP, Windows Vista Windows 7.

I am able to get the informations for all windows 7 and windows vista machines.

But the problem here is i am not able to get the informations for windows XP machines. Every time i am getting the following exception Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

I have gone through the net but no help. I have done all the steps mentioned in the following link http://support.microsoft.com/kb/875605. But no luck still i am not able to solve the problem. I have domain username with administrator privilages. Below is the code that i have used. (C#)

private void GetRemoteComputerInfo(string compName)
    {
        ObjectGetOptions oc = new ObjectGetOptions();
        try {
            ConnectionOptions connOptions = new ConnectionOptions();
            connOptions.Username = "domain\\domainUserName";
            connOptions.Password = "domainUserPass";
            connOptions.Authority = "kerberos:domain\\" + compName;
            connOptions.Impersonation = ImpersonationLevel.Impersonate;
            connOptions.EnablePrivileges = true;
            ManagementScope msc;
            if (compName == Environment.MachineName)
                msc = new ManagementScope("\\\\" + compName + "\\root\\cimv2");
            else
                msc = new ManagementScope("\\\\" + compName + "\\root\\cimv2", connOptions);
            msc.Connect();
            ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
            mc.Scope = msc;
            //collection to store all management objects
            ManagementObjectCollection moc = mc.GetInstances();
            if (moc.Count != 0) {
                foreach (ManagementObject mo in mc.GetInstances()) {
                    Console.WriteLine(string.Format("\nMachine Make: {0}\nMachine Model: {1}  System Type: {2}  Host Name: {3}  Logon User Name: {4}{5}",
                                      mo["Manufacturer"].ToString(),
                                      mo["Model"].ToString(),
                                      mo["SystemType"].ToString(),
                                      mo["DNSHostName"].ToString(),
                                      mo["UserName"].ToString(),
                                      Environment.NewLine));
                }
            }
        }
        catch (Exception e) {
            Console.WriteLine("{0}: {1}", e.GetType().Name, e.Message);
        }
    }

Please help me to solve the problem.

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Prasad, in the past i have a similar issue related to the WMI DCOM permission, and was resolved following the instructions of these these two links.

• Troubleshooting Error Code 80070005 - Access Denied
• Securing a Remote WMI Connection