City Skylines 2 Not Working After Installing Mods.

Hi there, and thank you for reaching out. My name is Aileen, and I am an Independent Advisor here to give you guidance.

It sounds like Cities: Skylines 2 started crashing at the main menu after installing mods through the in-game mod manager, and uninstalling the game didn’t remove those mods. Since the issue keeps coming back after reinstalling, we’ll need to remove the leftover mod files manually — but the steps can vary depending on the device you're using.

Before we continue, could you let me know what device you're playing on? (For example: Windows PC, Xbox Series X|S, or PlayStation 5)

Once I have that detail, I can guide you with specific steps that apply directly to your setup and avoid giving instructions that don’t match your system.

Cities Skylines: 2, Mods are from the Official Website of the Developer, Paradox.

Skyrim and Fallout 4 are the only games I know of on the Xbox that support mods.

Cities Skylines also supports mods but, as with Skyrim and Fallout 4, they are downloaded and installed through the game menus and there is no need to access game files

No nothing has downloaded and nothing is in ready to install and the page for the City Skylines-Season Pass 2 says that it does indeed work with the version of the game I own, I have just requested a refund

They’re the only ones currently installed, cities skylines appeared to work ok but that was installed on the external hard drive which has been disconnected trying to diagnose the problem