How to run Fallout 4 fullscreen on 4:3 display

The recently released action role-playing game, Fallout 4 has become extremely popular. It is available for PC and game consoles. On PC, it has a number of issues you might face. One of the issues is missing support of 4:3 screens. The game does not offer any option to select a usable resolution for screens with 4:3 aspect ratio to run it fullscreen.
fallout 4 banner 2 logoHere is what you need to do to run Fallout 4 fullscreen on a 4:3 display:

  1. Close the Fallout 4 game.
  2. Go to your game preferences folder. Usually it is located at:
    This PC\Documents\My Games\Fallout4

    If you are running Windows 7, go to

    C:\Users\your user name\Documents\My Games\Fallout4
  3. Double click the file Fallout4Prefs.ini. It will be opened in Notepad:
  4. Find the line starting with bFull Screen=
    Change it to
    bFull Screen=1
  5. Next, find the line starting with iSize H=
    Change it to the height of your screen. For example, for 1280 x 1024 display resolution, it is
    iSize H=1024
  6. Find the line starting with iSize W=
    Change it to the width of your screen. For example, for 1280 x 1024 display resolution, it is
    iSize W=1280

Save the file, close Notepad and enjoy Fallout 4 fullscreen.

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