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How to Back Up Windows Automatically (and Check It Worked)

A backup you have to remember to run is a backup that will not be there when you need it. The fix is to set up automatic backups once, then prove they work with a small restore test. That way, a lost laptop or a failed drive is an inconvenience, not a disaster.

Illustration of a laptop with files being copied to a shielded backup drive and a cloud symbol.

Follow these steps

  1. Turn on File History for your personal files. Connect an external drive, open Settings, then System, then Storage, then Advanced storage settings, then Backup options, and turn on File History with that drive selected. File History automatically saves copies of your Documents, Pictures, and other personal folders.
  2. Choose how often and how long to keep copies. In the same Backup options screen, set how often File History saves, such as every hour, and how long it keeps versions. More frequent saves protect recent work; keeping versions longer protects against discovering a problem late.
  3. Add a cloud copy for the files that matter most. Keep a second copy of your most important files in a cloud folder, such as OneDrive, which is built into Windows. This protects you if the computer and the external drive are lost or damaged at the same time.
  4. Check that the backup is actually running. After a day, open Backup options again and confirm File History shows recent activity and the drive has enough free space. A backup that stopped silently, because the drive filled up or was unplugged, is no backup at all.
  5. Run a small restore test. Create a test file, let File History save it, delete the original, then restore it from File History by searching for it in the backup. If the test file comes back intact, your backup works; if it does not, you have found the problem while nothing important is at stake.
  6. Keep the backup drive connected regularly. File History can only save while the drive is connected. If you use an external drive, plug it in at least a few times a week, or leave it connected, so the backup stays current.

What NOT to do

  • Assume the backup works because you turned it on once. Test it with a restore, or you may discover a failure only when you need the backup most.
  • Keep the only backup on the same drive as the original files. If that drive fails, both copies go with it.
  • Back up everything and nothing else. A backup of your whole system is useful, but your personal files are the irreplaceable part; make sure they are covered first.
  • Unplug the backup drive and forget about it for months. An old backup is better than none, but recent work will be missing.

A backup is only real once you have restored something from it. Set File History running, add a cloud copy of the essentials, and repeat the restore test whenever you change drives or computers.