@Emily Hua-MSFT , I tried all of the options in your linked URL and no luck; still can't open the files. I suspect they may have somehow become damaged?
Side note: I downloaded the "Visio Reader" and got no errors during installation, but for some reason, it does not show up in my Start Menu, or under my "Program Files"/"Program Files (x86), or when I type "Visio" in my "Search box".
Any other ideas?