unable to get installed software details of vm machine of azure using System.Management

My requirement is to get installed software details of vm machine of azure and store the details in db. but when I try to get the details using System.Management class I am getting the below error

System.Runtime.InteropServices.COMException: 'The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)'

below is my sample code I am using to get the software details

 string SoftwareQuery = "SELECT * FROM Win32_Product";
        ConnectionOptions connection = new ConnectionOptions();



            connection.Username = "bla bla";
            connection.Password = "Password";

        connection.EnablePrivileges = true;
        connection.Impersonation = ImpersonationLevel.Impersonate;

        ManagementScope managementScope = new ManagementScope(@"\\xxxx.xxxx.cloudapp.azure.com:3389\root\CIMV2", connection);
        managementScope.Path = ManagementPath.DefaultPath;
        managementScope.Connect();


        ObjectQuery queryObj = new ObjectQuery(SoftwareQuery);
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(managementScope, queryObj);

        foreach (ManagementBaseObject managementObj in searcher.Get())
        {

           //get the software list here 

        }

Note: The above code is working on intranet properly

Please let me know anyone have solution on this.

It might be related to the Windows Management Instrumentation service being in a stopped state. Take a look at Starting and Stopping the WMI Service.

Hope it helps!