When you sign in to your Microsoft account, you can choose to automatically back up your files to OneDrive. This can be a great way to make sure your files are always safe and easy to access, but if you no longer want to automatically back up your files to OneDrive, you can stop this feature.
To stop automatic backup to OneDrive, open the OneDrive app and sign in. In the upper-left corner, click the Menu button (three horizontal lines) …