Re: Using WUA (Windows Update Agent) API from C# fails when attemptingto install hot fixes

stvcti wrote:

> Any help is much appreciated. I posted this problem on MSDN a few days
> ago, but so far, nothing but review and no response

Is the application running in administrative context?

Harry.


>
> I am writing an application to automate the installation of specific
> vendor approved MS hot fixes on select servers. The application is
> written in C# and uses the WUA API via COM which works well, both with
> selectively querying Windows 2003 servers or XP desktops for available
> hot fixes and downloading user selected hot fixes. When my application
> attempts to install the hot fixes by calling the
> IUpdateInstaller.Install() method, the application receives an immediate
> response of a null value. The code excerpt from my test app is below
> which omits the logic associated with querying the hot fixes and is
> executed after the user has selected the desired hot fixes from the
> application's GUI:
>
> using System.Collections.Generic;
> using System.ComponentModel;
> using System.Data;
> using System.Drawing;
> using System.Linq;
> using System.Text;
> using System.Windows.Forms;
> using System.Runtime.InteropServices;
> using WUApiInterop;
>
> public partial class Form1 : Form
> {
> private UpdateSession updateSession;
> private ISearchResult updateSeachResult;
>
> private void cmdDownloadHotfix_Click(object sender, EventArgs
> e)
> {
> try
> {
> IUpdateInstaller updateInstaller;
>
> Console.WriteLine("Creating UpdateCollectionClass to
> store updates...");
> UpdateCollectionClass updatesToInstall = new
> UpdateCollectionClass();
> Console.WriteLine("Creating UpdateDownloader to
> download updates...");
> UpdateDownloader downloader =
> updateSession.CreateUpdateDownloader();
> downloader.ClientApplicationID = CLIENT_NAME;
> for (int i = 0; i < updateSeachResult.Updates.Count;
> ++i)
> {
> //Limit download to User GUI selected updates
> if (lstViewMSUpdate.Items[i].Checked == true)
> {
> IUpdate update = updateSeachResult.Updates[i];
> updatesToInstall.Add(update); //add to Update
> Collection
> Console.WriteLine("Update: " + update.Title + "
> added to download list");
> }
>
> }
>
> if (MessageBox.Show("Download & Install Updates?",
> "Hotfix Installation Confirmation", MessageBoxButtons.YesNoCancel)
> == DialogResult.Yes)
> {
> Console.WriteLine("Adding selected updates to
> downloader updatesToInstall collection...");
> downloader.Updates = updatesToInstall;
> Console.WriteLine("Downloading updates...");
> downloader.Download();
>
> for (int i = 0; i < downloader.Updates.Count; i++)
> {
> Console.WriteLine("Updates successfully
> downloaded {0}.", downloader.Updates[i].Title);
> }
>
> Console.WriteLine("Creating UpdateInstasller...");
> Type itype =
> Type.GetTypeFromProgID("Microsoft.Update.Installer ");
>
> updateInstaller =
> (UpdateInstaller)Activator.CreateInstance(itype);
> updateInstaller.Updates = updatesToInstall;
> updateInstaller.ClientApplicationID = CLIENT_NAME;
>
> //updateInstaller.AllowSourcePrompts = true;
> Console.WriteLine("Creating
> UpdateInstallationResult...");
> updateInstaller.IsForced = true;
>
> if (updateInstaller.IsBusy == false)
> {
> IInstallationResult installationResult =
> updateInstaller.Install();
> //IInstallationResult installationResult =
> updateInstaller.RunWizard("Nortel MS Hotfix Update Utility");
>
> for (int i = 0; i < downloader.Updates.Count;
> i++)
> {
> Console.WriteLine("Update: {0},Result:
> {1}.",
> downloader.Updates[i].Title,installationResult.GetUpdateResult(i).Resul tCode);
>
> //Console.WriteLine(downloader.Updates[i].Title + ": " +
> //
> installationResult.GetUpdateResult(i).ResultCode.T oString());
>
> //Console.WriteLine(downloader.Updates[i].Title + ": " +
> //
> installationResult.GetUpdateResult(i).ToString());
> }
> }
> else
> Console.WriteLine("Installation aborted because
> Windows update already in progress!");
> }
> else
> updatesToInstall.Clear();
>
> System.Windows.Forms.Application.DoEvents();
> }
>
> catch (COMException ce)
> {
> MessageBox.Show("Caught COM error in download/install
> updates procedure: " + ce.ErrorCode.ToString() + " " +
> ce.Data.ToString(), "Error", MessageBoxButtons.OK);
> }
> }
> }
>
> The Windows.Update.log file entries (with enhanced debugging
> activated!) below confirm the successful hot fix download and attempt to
> install. The failure unfortunately is ambiguous and I cannot find a
> description of the error nor identify any cause for the problem. I have
> tried this application on multiple machines using local system admin and
> domain administrative user with no success. Lastly, the version of
> Windows Update Agent is the latest available.
>
> COMAPI -------------
> 2009-08-26 17:31:17:784 1840 f54 COMAPI -- START --
> COMAPI: Search [ClientId = STI Nortel MS Hotfix Update Ulility]
> 2009-08-26 17:31:17:800 1840 f54 COMAPI ---------
> 2009-08-26 17:31:17:816 1232 3ec Agent WU client
> succeeds CClientCallRecorder::BeginFindUpdatesEx from STI Nortel MS
> Hotfix Update Ulility with call id
> {F6DF7AAA-9AF8-4D10-98A7-2EFFAFC41C49}
> 2009-08-26 17:31:17:816 1232 a14 Agent WU client
> executing call {F6DF7AAA-9AF8-4D10-98A7-2EFFAFC41C49} of type Search
> Call
> 2009-08-26 17:31:17:816 1232 a14 Agent *************
> 2009-08-26 17:31:17:816 1232 a14 Agent ** START **
> Agent: Finding updates [CallerId = STI Nortel MS Hotfix Update Ulility]
> 2009-08-26 17:31:17:816 1232 a14 Agent *********
> 2009-08-26 17:31:17:816 1232 a14 Agent * Online = Yes;
> Ignore download priority = No
> 2009-08-26 17:31:17:816 1232 a14 Agent * Criteria =
> "Type='Software' and IsInstalled=0"
> 2009-08-26 17:31:17:816 1840 f54 COMAPI <<-- SUBMITTED
> -- COMAPI: Search [ClientId = STI Nortel MS Hotfix Update Ulility]
> 2009-08-26 17:31:17:816 1232 a14 Agent * ServiceID =
> {9482F4B4-E343-43B6-B170-9A65BC822C77}
> 2009-08-26 17:31:17:816 1232 a14 Agent * Search Scope
> = {Machine}
> 2009-08-26 17:31:18:097 2680 854 Misc ===========
> Logging initialized (build: 7.2.6001.788, tz: -0600) ===========
> 2009-08-26 17:31:18:097 2680 854 Misc = Process:
> C:\WINDOWS\system32\wuauclt.exe
> 2009-08-26 17:31:18:097 2680 854 Misc = Module:
> C:\WINDOWS\system32\wuaueng.dll
>
> ---- items deleted for brevity
> DnldMgr *************
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr ** START **
> DnldMgr: Downloading updates [CallerId = STI Nortel MS Hotfix Update
> Ulility]
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr *********
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr * Call ID =
> {4C78FC49-A304-446B-B872-D9F33E2DF825}
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr * Priority =
> 3, Interactive = 1, Owner is system = 0, Explicit proxy = 1, Proxy
> session id = -1, ServiceId = {9482F4B4-E343-43B6-B170-9A65BC822C77}
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr * Updates to
> download = 1
> 2009-08-26 17:32:03:722 1232 a14 Agent Dumping out
> update 1 of 1
> 2009-08-26 17:32:03:722 1232 a14 Agent * Title =
> Update for Root Certificates [May 2009] (KB931125)
> 2009-08-26 17:32:03:722 1232 a14 Agent * UpdateId =
> {1BAC6A90-E250-4F1E-B254-5D076EFB2966}.100
> 2009-08-26 17:32:03:722 1232 a14 Agent * Bundles 1
> updates:
> 2009-08-26 17:32:03:722 1232 a14 Agent *
> {58E3391D-DDA3-47EB-88AC-275F64F33A02}.100
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr ***********
> DnldMgr: New download job [UpdateId =
> {58E3391D-DDA3-47EB-88AC-275F64F33A02}.100] ***********
> 2009-08-26 17:32:03:722 1232 a14 DnldMgr * All files
> for update were already downloaded and are valid.
> 2009-08-26 17:32:03:722 1232 a14 Agent WU client
> persisted 8 download calls
> 2009-08-26 17:32:03:737 1232 a14 Agent WU client
> persisted 8 download calls
> 2009-08-26 17:32:03:737 1232 e70 Agent WU client calls
> back to download call {4C78FC49-A304-446B-B872-D9F33E2DF825} with code
> Call complete and error 0
> 2009-08-26 17:32:03:737 1232 a14 Agent *********
> 2009-08-26 17:32:03:737 1232 a14 Agent ** END **
> Agent: Downloading updates [CallerId = STI Nortel MS Hotfix Update
> Ulility]
> 2009-08-26 17:32:03:737 1232 a14 Agent *************
> 2009-08-26 17:32:03:737 1840 8c4 COMAPI >>-- RESUMED
> -- COMAPI: Download [ClientId = STI Nortel MS Hotfix Update Ulility]
> 2009-08-26 17:32:03:737 1840 8c4 COMAPI - Download
> call complete (succeeded = 1, succeeded with errors = 0, failed = 0,
> unaccounted = 0)
> 2009-08-26 17:32:03:737 1840 8c4 COMAPI ---------
> 2009-08-26 17:32:03:737 1840 8c4 COMAPI -- END --
> COMAPI: Download [ClientId = STI Nortel MS Hotfix Update Ulility]
> 2009-08-26 17:32:03:737 1840 8c4 COMAPI -------------
> 2009-08-26 17:32:03:753 1232 300 Agent WU client
> internal API failed CClientCallRecorder:isconnectCall with error
> 0x8024000c
> 2009-08-26 17:32:03:753 1840 e54 COMAPI
> ISusInternal:isconnectCall failed, hr=8024000C
> 2009-08-26 17:32:05:222 3468 a68 COMAPI -------------
> 2009-08-26 17:32:05:222 3468 a68 COMAPI -- START --
> COMAPI: Install [ClientId = STI Nortel MS Hotfix Update Ulility]
> 2009-08-26 17:32:05:222 3468 a68 COMAPI ---------
> 2009-08-26 17:32:05:222 3468 a68 COMAPI - Allow source
> prompts: Yes; Forced: No; Force quiet: No
> 2009-08-26 17:32:05:237 3468 a68 COMAPI - Updates in
> request: 1
> 2009-08-26 17:32:05:237 3468 a68 COMAPI - WARNING:
> Exit code = 0x80004002
> 2009-08-26 17:32:05:237 3468 a68 COMAPI ---------
> 2009-08-26 17:32:05:237 3468 a68 COMAPI -- END --
> COMAPI: Install [ClientId = <NULL>]
> 2009-08-26 17:32:05:237 3468 a68 COMAPI -------------
> 2009-08-26 17:32:05:237 3468 a68 COMAPI FATAL: Unable to
> perform synchronous installation successfully. (hr=80004002)
>
> Any direction or suggestions are much appreciated! I have searched
> every knowledge base I could find with no success towards resolving this
> issue.
>
> Thanks!
>
>