How to find out which app locks a given USB storage device?

Posted by Dimitri C. on Super User See other posts from Super User or by Dimitri C.
Published on 2010-03-29T08:08:12Z Indexed on 2010/03/29 8:13 UTC
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Windows

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usb-drive

I'd like to unplug my USB mass storage device, but I get the following error message from Windows:

Windows can't stop your 'XYZ' device because it is in use. Close any programs or windows that might be using the device, and then try again later.

How can I find out which application locks the device, so I can safely unplug it without having to close all running applications first?

Note: I'm working on a Windows Vista system.

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