Fix for Monster Hunter World Iceborne not launching after Stygian Zinogre patch

It looks like Capcom broke the game for a lot of people when they added what I assume are some new DRM protections. Try this, in order, and see if it helps:

  1. Uninstall core priority software like Prio and Lasso
  2. Whitelist MHW for your antivirus
    • AVG and Avast are garbage anyway, just uninstall them tbh
  3. Uninstall mods: nativePC folder and any separate mod loader

Try now. Worked for me; I apparently hard Crio on my PC without using it, and somehow uninstalling it still fixed my launch issue.

It’s not been a week since the patch and Capcom haven’t done anything to fix it. Boo.