Fix Cities Skylines Snowfall Update: Game Won’t Start or Workshop Mods not working

It seems that with each and every patch update, the Cities Skylines game mods are getting outdated and that’s why most of the PC users are facing fatal errors, save files doesn’t load, won’t launch/crashing issue, or graphical issues as well. Similarly, the Cities Skylines Snowfall update also causing game won’t start or workshop mods not working issue to plenty of Windows PC users. If you’re also one of them, you can follow this troubleshooting guide below.

To recall, the Cities: Skylines is a city-building open-world simulation video game developed by Colossal Order and published by Paradox Interactive. Here you have to develop your strategy and build the whole town or city accordingly that includes zone controlling, road placement, taxation, public services, public transportation, and more. Now, without wasting any more time, let’s jump into the solution below.

Fix Cities Skylines Snowfall Update: Game Won't Start or Workshop Mods not working

Fix Cities Skylines Snowfall Update: Game Won’t Start or Workshop Mods not working

As with all expansions and updates user mods may prevent the game from working as it should. If you encounter such an issue please disable all your mods and try again. Should it work you know that the mods are the problem, however, we are unable to provide you a list with what mods are compatible and which mods aren’t.

Now, follow the below steps to fix the issue most probably.

  • Make sure that the Traffic++ mod isn’t compatible with the Snowfall version. So, if you’re using the Traffic++ mod, then we will recommend you to disable or uninstall it for the newly saved game files.
    • You can load and Traffic++ mod in the “ghost mode” for old saves that are compatible and it should work well.
  • Next, launch the Steam client on your PC.
  • Go to the Library > Right-click on the Cities: Skylines > Select Properties.
  • Click on the Set Launch Options > Enable “-disableMods” and “-noWorkshop”.
  • It will disable UGC and let you run the game properly.

If in case, nothing works for you, the Paradox Interactive support team highly recommends you to keep checking the Cities: Skylines Forum for the latest info on mods, etc.


That’s it, guys. We assume that this guide was helpful to you. If you’ve any queries, you can comment below.


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