Fallout 3 is an action role-playing game which was created by Bethesda on many platforms in 2008. Many gamers still play Fallout 3 game even today which clearly explains its immense popularity. But sometimes, you might face Fallout 3 not working on the latest Windows computers. It is a critical issue and you must apply some methods to make Fallout 3 work on Windows 10 OS. Given below are some effective solutions that you can use to resolve this issue.

Quick fixes for Fallout 3 not working issue
Apply any of the following workarounds to make Fallout 3 game successfully runs on your system:
Method 1: Run Fallout 3 as an Administrator
Some issues related to the working of Fallout 3 on Windows10 can be fixed by running the game with administrative privileges. It is a quiet simple process and you need to follow the steps given below to run this game as an Administrator on your system:
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Go to the Fallout 3 folder stored in your Steam folder. The default location of the required folder is: X:\Program Files (x86)\Steam\steamapps\common\Fallout 3 goty or X:\Program Files (x86)\Steam\steamapps\common\Fallout 3.·
Right-click on the Fallout 3’s EXE file stored on your computer.·
Choose the Properties option from the resulting context menu.·
Navigate to the Compatibility tab and enable the Run this program as an administrator option by putting a tick in the check box adjacent to it.·
Now, click on the Apply button followed by Ok button.
Once you are done with the above steps, launch the Fallout 3 application again and check if the issue has been resolved.
Method 2: Edit the Falloutprefs.ini File
Most of the Windows 10 problems that are generally encountered while playing Fallout 3 can be resolved by editing the falloutprefs.ini file. It is a config file belonging to Fallout 3. For this, follow the steps given below:
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Go to the following path to access your game folder: My Documents\My Games\Fallout3. -
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Locate a file named as falloutprefs.ini.·
Double-click on the falloutprefs.ini file to open it as a new instance of Notepad.·
Locate bUseThreadedAI=0 folder and rename it as bUseThreadedAI=1.·
In a new line within the file, type iNumHWThreads=2.·
Press Ctrl + S to save the changes you have made to the falloutprefs.ini file and close the instance of Notepad.
