The Guardian features a beneficial article on DISK CLEANUP tools.  They delete temp and work files no longer needed by Windows 10. It is beneficial to cleanup wasted disk storage monthly and it will also improve performance.

https://www.theguardian.com/technology/askjack/2017/apr/27/disk-storage-space-windows-10-pc

Before we start, I must remind you that you are totally responsible for your own PC and all your personal data. If you are going to run programs that delete files, or worse, you must have everything securely backed up first. Windows 10 includes a backup program that can back up your hard drive and also take a disk image. It’s also a good idea to create recovery media and to make separate copies of irreplaceable data files and family photos.

Windows includes Disk Cleanup and other facilities for reclaiming hard drive space. However, Piriform’s free CCleaner is the quickest and simplest way to delete temporary internet files, old log files and other accumulated junk. Download it from the original source as there are scammers who charge for it.

CCleaner can delete information you want. This includes your browser history, and website details stored in cookies on your hard drive. Before you run it, make sure you know the log-on details and passwords for all your websites, and save the current tabs in all your browsers.  For the best results, reboot your PC and run it before starting any programs that may object to CCleaner deleting their data.

There are other possibilities, such as a runaway media cache, a PC that is creating too many system restore points, or an overgrown Windows search index file (windows.edb). Also, your file system may have been corrupted so it is showing incorrect values. To fix this, run a command prompt as administrator, type in chkdsk C: /f /v /x and schedule a reboot.