This may occur if some of your system files have become corrupted.
Firstly, ensure that your copy of Windows is genuine and up to date. If you are using a Windows Insider or Preview build, you will need to consider rolling back to a public build.
If the issue persists, try checking your system for any errors by opening a CMD window with administrative permissions. You’ll then need to type the following:
Let this run without interference, though it may take a while. It will also try to repair any corruption or walk you through what needs to be done.
Unfortunately, if this still doesn’t work, you may need to reinstall Windows.