How to Fix All Windows Update Error ?

1. Run dialog : services.msc.
2. Find the Background Intelligent Transfer Service.
3. Turn the service to stop.
4. Find the Windows Update.
5. Turn the service to stop.
6. Go to C:\Windows\SoftwareDistribution.
7. Delete all the content of DataStore and Download folder.
8. Start the stopped services.
9. Restart the computer.
10. Go to this link.
11. Search for window update. (Please specifics your window version)
12. Select the important updates and install.