A Microsoft file hosting and synchronization service.
Hello,
Please type regedit in the search on the taskbar to launch Registry Editor.
Then go to this path:
Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
Look through all of the sub folders, to see if you have two OneDrive listings? You should find two sub folders that have OneDrive listed on the right pane. You can right click on one of the sub folders and delete one of them.