When you reboot your computer, this will shut down any open programs and hopefully on reboot allow you to work with the file in question. Reboot into safe mode and try to rename or delete the folder.

Every time you unlock a locked Microsoft Windows 10 computer you are presented with a lock screen that you then must click or swipe to get to the logon screen where you enter your credentials.

Select Computer from the Start menu. This displays the Computer folder that contains a list of all drives. Right-click on the USB drive icon, then select Properties from the context menu.