Windows comes with many great built-in tools that,  unfortunately, are hard to discover and even harder to use. One of these  is its built-in file versioning tool called File History. Once set up,  it can keep copies of old versions of all your files and documents. It  can be incredibly useful to restore a previous version of a file or a  folder after you’ve made an accidental change or deletion.          “But I don’t use any files and folders on my PC!” Everything  on your PC is stored in files in folders. You might not work with  documents and spreadsheets, but file versioning is just as useful for  your game-save files, source code, and photos. It can also be used with  your application data to, for example, restore a deleted browser  bookmark or email message.          File History is also the closest Windows comes to protecting  your files against data degradation (also known as “bit rot”). It’s  satisfying to restore an earlier version of a file after it’s  u...