
Restart your computer and try Windows Update again to see if it works.Then follow the instructions provided to finish the process. Windows will start detecting problems.In the Get up and running section, click Windows Update > Run the troubleshooter. Type Troubleshoot in the search box on your desktop, and click Troubleshoot in System settings.Windows Update Troubleshooter is a helpful tool that is built in Windows system, and you can scan and fix your Windows Update error 0x80240017 by Windows Update Troubleshooter.

Note: the screenshots below com from Windows 10, and fixes apply to Windows 8 and Windows 7.
