Windows Central published a story that the Windows 10 KB4556799 update is causing a wide range of issues.
New Windows 10 update causing major PC problems for some — here's the fix
Windows 10 KB4556799 is causing a wide range of issues, including the reappearance of the file deletion bug seen with previous updates. You can uninstall the update now if you're experiencing any issues.
New Windows 10 update causing major PC problems for some — here's the fix