This action cannot be completed because the file is open in another program.

Hello,

I really need help, I can't delete this file from my computer. I went to Task Manager, nothing is open, I installed Unlocker (a software that helps uninstall when Windows can't do it) and nothing works either. I don't know what to do, plus what's strange is that what I'm trying to delete is called "RocketV2" and it says "This action can't be completed because the file is open in RocketV2.exe."

Help me please