I did google and I did come with some solutions but mostly was complicated for me any easy way that you personally know and have tried simple to eject usb without getting this errro? =========================================== Problem Ejecting USB Mass Storage Device This device is currently in use. Close any programs or windows that might be using the device, and then try again
I was reading the other day that in Windows 10 you can safely pull the USB drive out without ejecting it first, providing you aren't transferring files at the time. Here you go - https://thenextweb.com/microsoft/20...-out-usb-drives-without-safely-removing-them/ - This isn't the site I was reading but same story.
Some times it can be a program you think you've closed but in fact still has processes running. Check in task manager to see if the said program is still running. I have a utility that does this and and until I kill the process it won't allow me to "safely" eject the USB