Using WUA remotely using C #

Question

I am trying to connect to a remote computer and determine if updates for Windows will be installed using C # and WUApiLib. It seems pretty simple, however, I can’t find out how to connect to the remote computer.

http://msdn.microsoft.com/en-us/library/aa387288(v=VS.85).aspx identifies what can be used remotely, with a few exceptions that do not bother me, but there seems to be no documentation on that how to actually connect. I tried to pass the name of the computer, but that didn't work either (passing the name containing the gibberish is “successful”, just like passing nothing, and it leads to the same calculations, so I assume the line is not used.)

var updateSession = new UpdateSession(dependencies.ComputerName); var searcher = updateSession.CreateUpdateSearcher(); var results = searcher.Search("IsInstalled=0 and Type='Software'"); 

Does anyone know who uses WUA remotely through C #?

Answer 1

I searched the same a few years ago and wrote a little script.

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using WUApiLib;//this is required to use the Interfaces given by microsoft. namespace MSHWindowsUpdateAgent { class Program { static void Main(string[] args) { UpdatesAvailable(); if (NeedsUpdate()) { EnableUpdateServices();//enables everything windows need in order to make an update InstallUpdates(DownloadUpdates()); } else { Console.WriteLine("There are no updates for your computer at this time."); } Console.WriteLine("Press any key to finalize the process"); Console.Read(); } //this is my first try.. I can see the need for abstract classes here... //but at least it gives most people a good starting point. public static void InstalledUpdates() { UpdateSession UpdateSession = new UpdateSession(); IUpdateSearcher UpdateSearchResult = UpdateSession.CreateUpdateSearcher(); UpdateSearchResult.Online = true;//checks for updates online ISearchResult SearchResults = UpdateSearchResult.Search("IsInstalled=1 AND IsHidden=0"); //for the above search criteria refer to //http://msdn.microsoft.com/en-us/library/windows/desktop/aa386526(v=VS.85).aspx //Check the remakrs section Console.WriteLine("The following updates are available"); foreach (IUpdate x in SearchResults.Updates) { Console.WriteLine(x.Title); } } public static void UpdatesAvailable() { UpdateSession UpdateSession = new UpdateSession(); IUpdateSearcher UpdateSearchResult = UpdateSession.CreateUpdateSearcher(); UpdateSearchResult.Online = true;//checks for updates online ISearchResult SearchResults = UpdateSearchResult.Search("IsInstalled=0 AND IsPresent=0"); //for the above search criteria refer to //http://msdn.microsoft.com/en-us/library/windows/desktop/aa386526(v=VS.85).aspx //Check the remakrs section foreach (IUpdate x in SearchResults.Updates) { Console.WriteLine(x.Title); } } public static bool NeedsUpdate() { UpdateSession UpdateSession = new UpdateSession(); IUpdateSearcher UpdateSearchResult = UpdateSession.CreateUpdateSearcher(); UpdateSearchResult.Online = true;//checks for updates online ISearchResult SearchResults = UpdateSearchResult.Search("IsInstalled=0 AND IsPresent=0"); //for the above search criteria refer to //http://msdn.microsoft.com/en-us/library/windows/desktop/aa386526(v=VS.85).aspx //Check the remakrs section if (SearchResults.Updates.Count > 0) return true; else return false; } public static UpdateCollection DownloadUpdates() { UpdateSession UpdateSession = new UpdateSession(); IUpdateSearcher SearchUpdates = UpdateSession.CreateUpdateSearcher(); ISearchResult UpdateSearchResult = SearchUpdates.Search("IsInstalled=0 and IsPresent=0"); UpdateCollection UpdateCollection = new UpdateCollection(); //Accept Eula code for each update for (int i = 0; i < UpdateSearchResult.Updates.Count; i++) { IUpdate Updates = UpdateSearchResult.Updates[i]; if (Updates.EulaAccepted == false) { Updates.AcceptEula(); } UpdateCollection.Add(Updates); } //Accept Eula ends here //if it is zero i am not sure if it will trow an exception -- I havent tested it. if (UpdateSearchResult.Updates.Count > 0) { UpdateCollection DownloadCollection = new UpdateCollection(); UpdateDownloader Downloader = UpdateSession.CreateUpdateDownloader(); for (int i = 0; i < UpdateCollection.Count; i++) { DownloadCollection.Add(UpdateCollection[i]); } Downloader.Updates = DownloadCollection; Console.WriteLine("Downloading Updates... This may take several minutes."); IDownloadResult DownloadResult = Downloader.Download(); UpdateCollection InstallCollection = new UpdateCollection(); for (int i = 0; i < UpdateCollection.Count; i++) { if (DownloadCollection[i].IsDownloaded) { InstallCollection.Add(DownloadCollection[i]); } } Console.WriteLine("Download Finished"); return InstallCollection; } else return UpdateCollection; } public static void InstallUpdates(UpdateCollection DownloadedUpdates) { Console.WriteLine("Installing updates now..."); UpdateSession UpdateSession = new UpdateSession(); UpdateInstaller InstallAgent = UpdateSession.CreateUpdateInstaller() as UpdateInstaller; InstallAgent.Updates = DownloadedUpdates; //Starts a synchronous installation of the updates. // http://msdn.microsoft.com/en-us/library/windows/desktop/aa386491(v=VS.85).aspx#methods if (DownloadedUpdates.Count > 0) { IInstallationResult InstallResult = InstallAgent.Install(); if (InstallResult.ResultCode == OperationResultCode.orcSucceeded) { Console.WriteLine("Updates installed succesfully"); if (InstallResult.RebootRequired == true) { Console.WriteLine("Reboot is required for one of more updates."); } } else { Console.WriteLine("Updates failed to install do it manually"); } } else { Console.WriteLine("The computer that this script was executed is up to date"); } } public static void EnableUpdateServices() { IAutomaticUpdates updates = new AutomaticUpdates(); if (!updates.ServiceEnabled) { Console.WriteLine("Not all updates services where enabled. Enabling Now" + updates.ServiceEnabled); updates.EnableService(); Console.WriteLine("Service enable success"); } } } } 

Answer 2

  Type t = Type.GetTypeFromProgID("Microsoft.Update.Session", "SYDEMMTA001"); UpdateSession session = (UpdateSession)Activator.CreateInstance(t); IUpdateSearcher updateSearcher = session.CreateUpdateSearcher(); //int count = updateSearcher.GetTotalHistoryCount(); //IUpdateHistoryEntryCollection history = updateSearcher.QueryHistory(0, count); //for (int i = 0; i < count; ++i) //{ // Console.WriteLine(string.Format("Title: {0}\tSupportURL: {1}\tDate: {2}\tResult Code: {3}\tDescription: {4}\r\n", history[i].Title, history[i].SupportUrl, history[i].Date, history[i].ResultCode, history[i].Description)); //} //Console.WriteLine("Total up: {0}", count); ISearchResult sResult = updateSearcher.Search("IsInstalled=0 AND IsPresent=0"); foreach (IUpdate x in sResult.Updates) { Console.WriteLine(x.Title); } 

Answer 3

Try the following:

 Type t = Type.GetTypeFromProgID("Microsoft.Update.Session", HOSTNAME); UpdateSession uSession = (UpdateSession)Activator.CreateInstance(t); IUpdateSearcher uSearcher = uSession.CreateUpdateSearcher(); uSearcher.ServerSelection = ServerSelection.ssWindowsUpdate; uSearcher.IncludePotentiallySupersededUpdates = false; uSearcher.Online = false; ISearchResult sResult = uSearcher.Search( "IsInstalled=0 And IsHidden=0 And Type='Software'");