A Microsoft file hosting and synchronization service.
OneDrive.exe located in %userprofile%\AppData\Local\Microsoft\OneDrive - not in Windows system folders.
(%userprofile% variable points to C:\Users"your_username" - for example, on my computer it would expand to
C:\Users\andre\AppData\Local\Microsoft\OneDrive)
To force synchronization manually for your OneDrive files you can use the following batch file -
cd %userprofile%\AppData\Local\Microsoft\OneDrive
OneDrive.exe /shutdown
OneDrive.exe /background
Store the batch file somewhere on your computer, then save the shortcut to it on your desktop - and you will be able to force-sync files with just one double-click on this shortcut.
Hope this helps, best regards,
Andre