You're trying to open a .Ust file you've received through an email attachment or a file on your hard drive, but your computer won't let you do it. You get an annoying pop-up window that says, "Windows can't open this file".
The reason why you can't open your .Ust file is because you don't have the EXACT .Ust software to open that EXACT .Ust file extension. What could be more frustrating?
Finally... there is a way to open ANY .Ust file on your computer - without buying expensive and complicated programs (many costing $500 or more).
FileViewPro lets you open ALL kinds of files quickly and easily, including videos, music, photos, documents, and much more. Install FileViewPro now and have ONE program that does it all. You’ll never struggle to open a file again.
Download Ust file viewer
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