Now locate the Fallout4Prefs.ini file and open it.
Jump to C:\Users\username\Documents\My Games\Fallout4.
One of the common solutions which will fix fallout 4 crash on startup error and a lot of gamers have given this solution a green signal. The free version has some limitations so we recommend you to just update the graphics driver first. It was scan all the outdated drivers in your PC and let you update them.
Now click on the scan now button and let the driver easy do its job.
Install the software on your pc and launch it.
First of all, download the driver easy software from here.
This can be done from your graphics card manufacturer’s official website or using driver easy software. In this situation, we recommend you to update your graphics driver.
In this way, all of the files in the Fallout 4 folder will be added to the exclusion list of Windows Defender.Īnother reason for fallout 4 crashing on startup could be the outdated graphic driver that is causing the program to crash.
Select the entire folder and click on ok.
Now you have to search for the location where you have installed the game, it can either be in your C drive or in a custom location.
Click on add exclusion and select folder.
Launch the windows defender > Click on settings > virus and threat protections > Exclusions.
That gives us a clear hint that windows defender was blocking some of the game files that caused fallout 4 crashes on startup, in this case, we can add it to the exclusions list of the Windows Defender.
Now try to run Fallout 4 on your PC, you will see the game will now run without any crashes.
In this way, you have successfully disabled your Windows Defender.
Now return to the home menu of the windows defender program and click on the settings icon in the lower-left corner.
Turn off Real-time protection and cloud protection.
Now click on the virus and threat protection > Virus and threat protection settings.
Using the search box, type in “ Windows Defender” and click on “ Windows Defender security center” from the search results.
You can look out for the tutorial on the official site of the anti-virus vendor.įor Windows Defender user, here is how you can turn off Defender: To fix fallout 4 crashes on startup issue, you can turn off windows defender, or any other anti-virus program installed in your computer from the program’s setting. If you are using only the windows defender, the possibility of getting back the deleted files are high, you can even turn off the windows defender and mark the file as risk-free.