Show extensions in Windows Vista

In Windows Vista

By default, Windows Vista hides file extensions from view.

it is important to know what file extensions mean and how your computer uses them. When faxing via the internet, you will become familiar with file extensions every time you send or receive a fax.

Sometimes you will need to view these extensions in order to change them. This page contains instructions on how to show the file extensions.

Showing File Extensions

  • Click Start
    Click the Start button

  • Click Control Panel
    Go to Settings
  • Click Appearance and Personalization
    Click on Control Panel
  • Click Folder Options
    Switch to Classic View
  • Click the View tab, and then, under Advanced setting, choose either of the following:
  • To hide file extensions, select the Hide extensions for known file types check box, and then click OK.
  • To display file extension, clear the Hide extensions for known file types check box, and then click OK.
Control Panel - Category View

Learn more about file extensions.