Step 2: Use System File Checker to repair damaged Windows files
If the problem continues, use the System File Checker tool to repair damaged Windows files. To do this, follow these steps:
Open an elevated command prompt.
Run the "sfc /scannow" command.
Try to install update again.
For more information about the System File Checker tool, view Use the System File Checker tool to repair missing or corrupted system files.
Step 3: Run the DISM tool
If the problem continues, use the Deployment Image Servicing and Management (DISM) tool to fix Windows Update corruption errors. To do this, follow these steps:
Open an elevated command prompt.
Run the "DISM.exe /Online /Cleanup-image /Restorehealth" command.
Important When you run this command, DISM uses Windows Update to provide the files that are required to fix corruptions. However, if your Windows Update client is already broken, use a running Windows installation as the repair source, or use a Windows side-by-side folder from a network share or from a removable media, such as the Windows DVD, as the source of the files. To do this, run the following command instead:
DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows /LimitAccess
Note Replace the C:\RepairSource\Windows placeholder with the location of your repair source. For more information about using the DISM tool to repair Windows, see Repair a Windows Image.