Windows Update Failure
This is a not uncommon problem, particularly after either a major hardware upgrade or a Windows reinstall. There are 3 probable causes for the problem:
1. The Windows Update Temporary folder is corrupted.
2. Update Agent 3.0 is not installed properly.
3. Installer 3.1 is corrupted.
Here’s how to fix them:
1. Clean up Windows Update temporary folder
1.1. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.
Net stop WuAuServ
1.2. Click Start, Run, type: %windir% and press Enter.
1.3. In the opened folder, rename the folder SoftwareDistribution to Sdold. You will loose your history but not important.
1.4. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.
Net start WuAuServ
2. Reinstall Windows Update Agent 3.0
2.1. Download the file from the following link:
http://download.windowsupdate.com/v7/windowsupdate/redist/standalone/WindowsUpdateAgent30-x86.exe2.2. Save the file to C: drive Root (C:)
2.3. Click Start, Run, type: "C:WindowsUpdateAgent30-x86.exe /wuforce" (without quotations) and then press Enter to install the Windows Update engine. (There is a space between "C:WindowsUpdateAgent30-x86.exe" and "/wuforce")
Note: If you are using Windows Vista, please save the downloaded file to the D: drive, because the file cannot be launched directly from the C: root directory.
3. Reinstall Windows Installer 3.1 (important)
3.1. Press Start and choose Run.
3.2. Type in "cmd" (without quotation marks) and press OK.
3.3. In the command line, type in the following command and press Enter:
MSIexec /unregister (Note: there is a space before the “/”)
3.4. Then, type in the following command and press Enter:
MSIexec /regserver (Note: there is a space before the “/”)
4. Now, try running updates again. If they still fail, then you’ll need to do a reinstall of Windows Installer:
4.1. Start, click Control Panel, and click Add/Remove Programs to check if Windows Installer 3.1 has been installed.
4.2. If it has, highlight and remove it.
4.3. After that, reinstall Windows Installer 3.1 from the following link.
http://www.microsoft.com/downloads/details.aspx?FamilyID=889482fc-5f56-4a38-b838-de776fd4138c&DisplayLang=enThis should fix the problem