A Microsoft file hosting and synchronization service.
Hello
Go to the Desktop in Windows 8, right-click on the Taskbar and select Task Manager.
In the Startup tab, see if the Upload Center is listed, if so, select it and click on Disable.
If not listed, check the Services tab. If you locate it in there, click on "Open Services" at the very bottom of the window.
Again, locate the Upload Service, right-click on it and select Properties. In the general tab change Startup type to disabled or Manual.
If you just want to 'kill' the process for this session of Windows, in the Task Manager click on the Processes tab, locate the Upload Service, select it and click on End Task.
Thanks...