Interrupted patches can leave mismatched asset files behind, triggering a null error when the game tries to read missing files.
The game engine fails to gain write access to the standard Windows AppData or Documents folders due to local operating system restrictions. Step-by-Step Fixes for PC (Steam & Xbox App)
Can't launch the game anymore (PC), got this error : r/MortalKombat
If you have your game progress saved to a WB Games account or Google/Apple ID:
Modern Mortal Kombat titles frequently split high-definition story cinematics into optional add-on packs to save baseline storage space. Missing these packs triggers a null loader failure when a new chapter begins. null coreerrorsopen failed mortal kombat new
On mobile versions, opening specific packs or claiming network-synchronized rewards can result in an infinite script crash.
The Unreal Engine core initialization relies on specific VC++ runtimes.
If you’re seeing this error on a (2023) install, also ensure your GPU drivers are up to date—some Unreal Engine 5 core components in MK1 require driver versions from mid-2024 onward.
I can provide more targeted troubleshooting steps once I have those details. Interrupted patches can leave mismatched asset files behind,
Below is a complete checklist of solutions, organized by platform. Start with the easiest steps before moving to more advanced fixes.
Look for the folder associated with your version of the game (e.g., for Komplete Edition, MK11 , or MortalKombat_MK1 ).
Locate the folder tied to your specific game version (e.g., MK11 , MK12 , or MKKE ).
Tap . Do not click Clear Storage/Data unless your profile is fully bound to a WB Games cloud backup account. 2. Force an Ecosystem Sync Resubmission Missing these packs triggers a null loader failure
The error message flickered on the screen like a dying pulse: NULL_CORE_ERRORS_OPEN_FAILED
Corrupted configuration caches can force the engine to check invalid paths. Purging the local AppData directory forces the game to rebuild its file structure cleanly upon the next startup. Press Windows Key + R to open the Run dialog box. Type %localappdata% and hit Enter.
Corrupted GPU drivers or outdated DirectX components fail to draw the initial startup screens, causing immediate operational failures. Step-by-Step Fixes for Mortal Kombat 1. Wipe the Local AppData Folder
Toggle your internet connection back on while the app is active to force the server to recalculate your inventory parameters cleanly. Preventative Performance Tweaks
The simplest fix is often the most effective. Right-click on the Mortal Kombat executable (usually found in the SteamLibrary or Epic Games folder) and select "Run as Administrator." This ensures the game has the "open" permissions it needs to access core files. 2. Verify Integrity of Game Files