Speaking of Windows 10 having issues with USB sticks, I have a problem, too. I've recently bought a 32gb USB stick and tried to put a 5gb movie on it. To no avail. Every time I try, I get an error message saying that the file is too big. I checked, there are actually 30+ free gigabytes on the stick. I've tried to put 5, 10, 20 gb's worth of other files on that stick, and it works. Still, I can't copy that one movie there. What should I do?