Now that we’ve identified the possible causes, the next step is to apply effective solutions. Fortunately, we’ve compiled a list of proven fixes that have helped many users resolve this exact error. Go through each one to find out which solution works best for your system.
1. Modify the Host File to Block Epic Games Servers
If you’re encountering this Unreal Engine 4 error, it may be caused by server-related connectivity issues—specifically, your computer having trouble communicating with Epic Games’ servers. In some cases, blocking these servers via the Windows host file has resolved the error for many users. By adding specific entries to the host file, you can prevent your system from attempting to connect to the problematic servers, which may stop the error from occurring.
2. Adjust GPU Settings
In some cases, your GPU being overclocked or configured with aggressive performance settings can cause instability in certain applications—Unreal Engine 4 included. This instability may lead to crashes or trigger the “Fatal error!” message. Adjusting your GPU to a more stable configuration can help resolve the issue. Simple tweaks like reducing clock speeds, enabling Eco mode, or manually adjusting fan curves can reduce strain on your system and improve stability during game launches. For NVIDIA GPUs For AMD GPUs
3. Adjust RAM Settings
After updating your BIOS, memory-related settings such as RAM frequencies or timings may change automatically. This can lead to system instability in certain applications or games, including those built on Unreal Engine 4. To restore stability, reset your RAM settings to their default or manufacturer-recommended values in the BIOS. This ensures that your memory is operating at safe and compatible timings and frequencies.
4. Delete Config File
A configuration file stores the settings and preferences for a game, including graphics, input, and system-related options. However, these files can become outdated or corrupted due to failed updates, system crashes, or hardware/software changes. Deleting the config file for an Unreal Engine 4-based game forces it to regenerate a fresh default configuration, which often resolves errors caused by corrupted settings.
5. Reinstall Game Updates by Clearing Patches
Just like core game files, update patches can become corrupted or misconfigured due to installation errors, interrupted downloads, or faulty patch releases. Clearing the patch data will remove any problematic files and force the game to redownload and reinstall the updates correctly, ensuring you’re running the latest stable version.
