Updates failed to be installed after being downloaded, Windows Installer has been installed successfully and the computer is a member of WSUS 3.0 server.
This error is most likely caused by one of the following conditions:
1. The Windows Update Temporary folder is corrupted.
2. The Windows Update Agent 3.0 is not installed properly.
3. The Windows Installer 3.1 is corrupted.
Perform the following steps to get the issue resolved. After trying each suggestion, please go to the Windows Update site to check the issue.
NOTE: Some third party programs can also affect the Windows Update service. If you are running any third party applications such as Spyblocker, Internet or web accelerators (programs designed to boost the speed of the Internet connection), security or anti-virus programs (Norton, McAfee, etc.), it is recommended to temporarily disable or shut them down and then try accessing the Windows Update site. Please be sure to enable them again when completing the update process.
Suggestion 1: Clean up Windows Update temporary folder
1. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.Net stop WuAuServ
2. Click Start, Run, type: %windir% and press Enter.
3. In the opened folder, rename the folder SoftwareDistribution or even delete it.
4. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window. Net start WuAuServ
If the issue still persists, please move on to suggestion 2.
Suggestion 2: Reinstall Windows Update Agent 3.0
1. Please download the file from the following link:
2. Save the file to C: drive.
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 (assuming you have an additional partition and its letter is D), because the file cannot be launched directly from the C: root directory.
If it still does not work, please proceed to suggestion 3 to reinstall Windows Installer 3.1.
Suggestion 3: Register / Reinstall Windows Installer 3.1
1. To register the Windows Installer engine Press Start and choose Run.
2. Type in “cmd” (without quotation marks) and press OK.
3. In the command line, type in the following command and press Enter:
4. Then, type in the following command and press Enter:
After finishing the above steps, please check the result again. If the issue persists, please click Start, click Control Panel, and click Add/Remove Programs to check if Windows Installer 3.1 has been installed. If it has, please highlight and remove it. After that, please reinstall Windows Installer 3.1 from the following link.
Windows Installer 3.1 Redistributable (v2)