File History is a backup feature in Windows that automatically saves copies of your files from specific folders, like Documents and Pictures, to an external drive or network location. It allows you to restore previous versions of your files if they are lost or damaged.
To enable File History in Windows, connect an external drive or network location, then go to Settings > Update & Security > Backup, and select "Add a drive" to choose your backup location. Finally, turn on File History to start backing up your files automatically.