This is the first solution and had worked for several users, and you can try it quickly. Solution 1: Run Nexus Mod Manager as Administrator Let’s get started with the first solution. Therefore on this post, I will leave some of the best tips and solutions that had helped multiples users to fix the Nexus mod manager won’t launch issues. This mod manager is commonly used in Bethesda games, but some other games also use this excellent utility because it has some neat features.Īlthough this program is somewhat old and has been well developed, there are also some problems and issues that prevent some users to launch the software correctly. Nexus Mod Manager, like the name itself implies, is a mod manager that will help you to enable, disable, and organize your mods in a quickly and smoothly way.