OneDrive users may experience issues while opening a file in the ‘Available when online’ status. At such times, you may see an error message box – Can’t open ...

If you’ve been using the internet for more than a month or so, you know that downloading files from unknown sites is a great ...

Microsoft has detailed the reason why File Explorer doesn't show you previews for downloaded files on your PCs.

Oh, and yeah, you can't 'open' multiple types of files at once since they would not all 'open' in the same software. I suppose you could make a feature request to Microsoft to add that capability, it ...