Get Remote machine OS Version by querying Active Directory

 Hi All,

Recently I had a requirement to find out the OS Version of remote machine but RPC calling were blocked in all machines due to security reasons. So I had to find another way.

I achieved this task simply by querying our organisation Active Directory by computer name. I have copied the method I used to achieve this task.

public string GetOSVersion(string computername)

        {

            DirectoryEntry deRoot;

            string RootPath;

            RootPath = ConfigurationManager.AppSettings["ADPath"];

            deRoot = new DirectoryEntry(ConfigurationManager.AppSettings["ADPath"],

                                        ConfigurationManager.AppSettings["ADUsername"],

                                        ConfigurationManager.AppSettings["ADPassword"]);

            deRoot.Path = RootPath;

            DirectorySearcher ds = new DirectorySearcher(deRoot);

            string strComputername = string.IsNullOrEmpty(computername) ? "" : "(cn=" + computername + ")";

            

            ds.Filter = "(&(objectClass=Computer)" + strComputername  + ")";

            ds.SearchScope = SearchScope.Subtree;

            SearchResult results = ds.FindOne();

            deRoot.Close();

            if (results == null)

            {

                return "";

            }

            else

            {

               return results.Properties["operatingSystem"][0].ToString() + results.Properties["operatingSystemVersion"][0].ToString();

                

            }

        }