Mac OS X computers use a default application to open every file type based on its file extension. If you don't want to use the default application when opening a file, you can select "Open With" from ...

Microsoft uses file associations to set default programs for opening different file types on all its operating systems. As a result, when you open a file, be it text, image, or document, on your ...

If you cannot associate a file extension to an application in Windows 11/10, and see an error message The program you selected cannot be associated with this file ...

It’s time for another grab bag, selected from the many questions I get from readers. In this week’s column, I look at some questions about font size in iTunes (spoiler: your options are limited), ...

Today we’re going to look at how our computers read and interpret computer files. Today we’re going to look at how our computers read and interpret computer files. We’ll talk about how some popular ...