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 ...

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 ...

Get a more generic solution to identifying unknown or unrecognized file types & extensions with these free tools for Windows 11/10 computer.

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Need to convert an M4A file to an MP3? It’s not an overly difficult process, and we’ve put together this guide to help you perform the switchover.

Barracuda Networks found that HTML attachments were malicious more than double than the next leading type of file.