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 ...

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 ...

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 ...

Android is a powerful and versatile operating system, but it can also become cluttered and confusing over time. One way this can happen is with default app settings. When you first install an app, it ...

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 ...

What steps do I need to take to change the default action on Windows XP and Windows 7 when someone tries to open a CHM file? I want the file extension to be associated with notepad.exe for ALL users.