How To Change The Default Font in MS Word?

There are several ways to do this, but this one is the best.
Open the template from within Word. It’s very important that you open it within Word, otherwise the template will simply create a new document rather than opening the actual file itself. 

  1. Click Format, Styles and Formatting and choose Body Text.
  2. Click Modify. 
  3. Click the Font to the font family and size you want. Click OK and OK again.
  4. Click the Apply button. 
  5. Type in any letter and then delete it. This forces Word to recognize that have changed 
  6. Save and close. 

By using the approach you change the file permanently.