Sync Desktop, Documents, and Pictures
1. You must be signed into OneDrive first. If you are not, see this article.
2. Click on your OneDrive icon in the bottom right corner and then click More.
3. Click Settings.
4. Click the Auto Save tab and click Update folders.
5. Click all three options (Desktop, Pictures, and Documents) and click Start Protection
6. That's it! You can close the dialog box while your files sync to OneDrive. Or, to watch your files sync, select View upload progress. If you already closed the dialog box, click the blue cloud in the bottom right corner to check.