Solution 5: Reinstall Origin and Re-download Sims 4.Solution 3: Enable Safe Mode Downloading in Origin.How to fix Sims4 not updating issue? MiniTool Partition Wizard introduces some solutions in this post. This commonly happens on Windows 10/8/7 and it’s quite annoying. Some players complain that their Sims 4 won’t update. Sims 4 is one of the most popular video games in the world.