When you open files that have a particular file extension, Windows will look at its configuration to determine what the default program should be in order to work with these files. The default ...

When you double-click a file on your Mac, the operating system will automatically open the file using the program assigned to that type of file. It is possible, though, to open the file using ...

If PowerPoint says that it can't open or read this type of presentation file, then use these proven fixes to resolve the issue once and for all.

Click Open. If the app that you want to use to open the file type is greyed out, it's because macOS doesn't think there's a valid association between the two.

If you receive Unsupported video type or invalid file path message in Internet Explorer when using Twitch, MyIPTV, Xbox or unsupported HTML video/audio format or player, see this fix.