Note: We have included screenshots of Excel. However, if you want to make the change in Word or PowerPoint, you must follow the same steps. The list of file extensions will be different as per the app ...

Microsoft said Thursday that XML would be the default file format for three applications when it ships Office 12 late next year. The company said its new Microsoft Office Open XML Formats would be ...

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 program ...

In the Mac OS it is possible to change the default program the operating system will use to open a file when you double-click on it. After you have changed this file association, though, you may want ...

A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...