What Does Windows Backup Actually Back Up?

Windows Backup is useful, but its name can make it sound more comprehensive than it is.

On a consumer Windows PC, Windows Backup can preserve selected user folders through OneDrive and remember a range of Windows settings, preferences, Wi-Fi information, and installed-app information associated with your Microsoft account.

That does not mean Microsoft is creating a complete clone of your entire PC.

Your files

Windows Backup can protect selected folders through OneDrive, including folders such as Desktop, Documents, Pictures, Videos, and Music.

Those files are then tied to your OneDrive storage. Available cloud capacity matters if you have a large collection.

Your applications

Windows can remember information about installed applications to make a move or recovery easier.

Do not interpret that as a guarantee that every old program and every piece of its data has been copied into a restorable image.

Your settings

Windows Backup can preserve various preferences such as accessibility options, personalization, accounts, and Wi-Fi information.

That can save considerable setup work on another PC.

What Windows Backup is not

It is not a reason to throw away every other copy of important files.

Microsoft distinguishes backup—the creation of copies of data—from restore and other Windows recovery processes.

For irreplaceable documents and photographs, having another independent copy remains sensible.

The important question is not simply “Is Windows Backup turned on?”

It is: If this computer disappeared tonight, where else does my important information exist?

Sources and Further Reading

Microsoft Windows Backup and Windows backup, restore, and recovery documentation.