IL2CPP not installed#

Using the Unity Hub, navigate to the installs page, select your install and select add modules1.

Add Modules

Add modules in the Unity Hub

Tick only Windows Build Support (IL2CPP) and continue.
If this is your first time installing IL2CPP support you may also have to follow these steps.

If this has not fixed your issue, double-check your project is running on the Unity version you modified.

  1. If you cannot add modules to an install, it may have been installed manually. Re-run the installer.