How your File Explorer works with your OneDrive (Microsoft) account: When your Windows PC is signed into OneDrive with your Microsoft account, files stored on your OneDrive servers (in Data Centres) are synced to the computer’s hard disk. When connected to the internet and in OneDrive in File Explorer, every new file or folder that you add is automatically uploaded to the remote OneDrive server. This way your files (letters, photos etc.) are always backed up and can be easily added to a new Windows PC. Also you can access your folders and files from any browser (Chrome or Edge) when you sign into OneDrive at onedrive.com
