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Get Remote machine OS Version by querying Active Directory

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  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"],                   ...