How do I reinstall Windows Automatic Update service?
Please perform the following to reinstall the Windows update agent on your system:
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:
2.2. 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.
Performing this has been known to resolve issues with:
Patch scan not detecting all/no patches
Patch scan not determining operating system
Kaseya all versions