How to Restore File Associations

The Windows operating system relies on file associations to know which programs open what types of files. Most files have a file extension, a three- or four-letter code, such as .DOCX or .TXT, that identifies the file type. On occasion, these file associations are changed when installing programs or when a computer has been infected with malware. Restoring or changing file associations is a simple task and can go a long way toward customizing your computer to your needs and preferences.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Windows Vista

1. Click on "Start" and then "Control Panel."

2. 
    

   Double-click on "Default Programs."

3. 
    

   Click "Associate a File Type or Protocol with a Program."

4. 
    

   Highlight the file type you wish to change and click "Change Program."

5. 
    

   Select the program you wish to associate the file type with and click "OK." Windows will highlight the currently associated program and offer recommended programs.