A Microsoft file hosting and synchronization service.
Hi! Sorry to hear that you’re having trouble with this situation. Could you please share how you uploaded these files? Was it through an app? If so, you need to open that app again, and your account should already be signed in there. If the files were uploaded from a folder on your PC, you should see a OneDrive icon near the clock in the taskbar. Click it, and it should show your account information.