Backup

Back Up a Windows 11 PC: What to Check

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A backup only helps when it contains the files you need and you know how to recover them.

List your important files

Check Documents, Desktop, Pictures and any project folders outside the usual locations. Include application files, website exports and business records where relevant.

Review Windows Backup

Search Start for Windows Backup. Review its folder and settings options and confirm the correct account is signed in. If folders use OneDrive, check storage availability and whether files appear on another device.

Keep another copy

Synced settings and a list of apps are not the same as a full backup of every folder. Keep an independent copy of important data on another drive or trusted backup service.

Test recovery

Restore a harmless test file and open it. If you cannot recover it, adjust the plan before relying on it. Disconnect a removable backup drive when you are not using it.

Further reading: Microsoft Support: Windows Backup.

Make a Simple 3-2-1 Backup Plan

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A 3-2-1 backup plan keeps three copies of important data, uses two types of storage and keeps one copy off-site.

Map your copies

The working files on your PC are the first copy. An external drive can hold another; an off-site backup service or securely stored drive can provide the third. Make sure the plan covers files outside the usual Documents folder.

Consider deletion and ransomware

Sync alone may copy accidental deletions to other devices. Review version history and retention. Keep at least one backup protected from the same device and account risks as your everyday files.

Test a restore

Once a month, restore a harmless file from your backups and open it. Record when each backup last succeeded, where it is kept and who can access it. Include website and database exports if you run an online business.

Further reading: NCSC: data security.