Tutorials: Setting up Mendeley on Windows for OneDrive syncing
This video describes why and how to transfer the Mendeley database and Pdf articles from the Mendeley folder inside your favorite Cloud folder (here, OneDrive, for the example).
Go to your User's folder and make sure the AppData folder is visible. If not, go to the View tab and tick the Hidden items checkbox.
Now that AppData is visible, go to AppData/Local/Mendeley Ltd/ and move the folder Mendeley Desktop to your Cloud folder (either Dropbox, Google Drive or OneDrive).
This video describes why and how to transfer the Zotero database and Pdf articles from the Zotero folder inside your favorite Cloud folder (here, Google Drive, for the example).