I'm trying to install the latest version of Windows Update Agent, v7.2.6001.788, and the installation failed with error code of 0x800b0100. Running Windows Server 2008 SP1.
The relevant WindowsUpdate.log section:
2009-08-03 16:17:49:334 3544 d28 Misc =========== Logging initialized (build: 7.2.6001.788, tz: +0100) ===========
2009-08-03 16:17:49:334 3544 d28 Misc = Process: d:\fcc0f96e893296900e6501a601\wusetup.exe
2009-08-03 16:17:49:332 3544 d28 Setup Windows Update Client standalone setup : resource dll path is d:\fcc0f96e893296900e6501a601\en\wusetup.exe.mui
2009-08-03 16:17:49:335 3544 d28 Setup Evaluating CBS package "d:\fcc0f96e893296900e6501a601\WUClient-SelfUpdate-Core-TopLevel.cab"
2009-08-03 16:17:49:556 3544 d28 Setup Package will be installed
2009-08-03 16:17:49:556 3544 d28 Setup Evaluating CBS package "d:\fcc0f96e893296900e6501a601\WUClient-SelfUpdate-ActiveX.cab"
2009-08-03 16:17:49:580 3544 d28 Setup Package will be installed
2009-08-03 16:17:49:580 3544 d28 Setup Evaluating CBS package "d:\fcc0f96e893296900e6501a601\WUClient-SelfUpdate-Aux-TopLevel.cab"
2009-08-03 16:17:49:665 3544 d28 Setup Package will be installed
2009-08-03 16:17:49:709 3544 d28 Setup Windows Update Client standalone setup : eula file path is d:\fcc0f96e893296900e6501a601\en\eula.rtf
2009-08-03 16:17:52:337 3544 de0 Misc WARNING: LoadLibrary failed for srclient.dll with hr:8007007E
2009-08-03 16:17:52:338 3544 de0 Setup Installing CBS package "d:\fcc0f96e893296900e6501a601\WUClient-SelfUpdate-Core-TopLevel.cab"
2009-08-03 16:17:53:895 3544 de0 Setup WARNING: CBS operation failed, error = 0x800B0100
2009-08-03 16:17:53:898 3544 de0 Setup WARNING: Install of setup package "d:\fcc0f96e893296900e6501a601\WUClient-SelfUpdate-Core-TopLevel.cab" failed, error = 0x800B0100
2009-08-03 16:18:04:976 3544 d28 Setup wusetup has finished. Exit code is 0. Reboot is NOT needed
I think something went wrong twhen loading the srclient.dll.
Things that I have done and still no fix:
msiexec /unregister
andmsiexec /register
regsvr32 wuapi.dll
- Run CheckSUR tool and restart
Have you tried this from the command prompt?
http://support.microsoft.com/kb/956702
Method for Windows 7, Windows Vista or Windows Server 2008 To resolve this issue, run the System Update Readiness Tool (Checksur.exe). To do this, follow these steps: Download and run the System Update Readiness Tool. This tool runs a one-time scan for inconsistencies that may prevent future servicing operations. For more information about how to download and run the Checksur.exe tool, click the following article number to view the article in the Microsoft Knowledge Base: 947821 Description of the System Update Readiness Tool for Windows Vista Try to install updates again. Note After you run the tool, the Checksur.log file is located in the following location: %systemroot%\Logs\CBS\
In a default installation of Windows 7 and Windows Vista, this file is in the following folder:
C:\Windows\Logs\CBS
check that you're running the latest revision of the checksur tool. microsoft releases updates occasionally so one you downloaded last year may not fix your problem.
as of right now, the latest one is here: http://support.microsoft.com/kb/947821