My daughter had her thumb drive plugged into my desktop, doing some work. She finished, logged off of her account and I logged into mine. I noticed that she left her thumb drive in the USB port, and so I tried to safely eject it, but I get the following message:
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.
OK, I give up. I just logged into my account and the first thing I did was try to eject her thumb drive. What in heck is currently using it? I don't have anything else opened/running when I got that message. How do I determine what program is apparently running and doing whatever it is, against that USB drive? How do I get whatever it is, to stop so I can safely disconnect the thing?
Best Answer
You can use Unlocker to find out what program has it opened, then close that program. If you cannot exit the program, you can use Unlocker to force the handle closed.
If it is Windows Explorer, you can restart it. En easy way is to hold Control + Shift and right-click a blank area in the Start menu: