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Unsupported Game Version Detected

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Every time I try to load the MP mod for ATS after the Arizona DLC release, I keep getting this error:


"Unsupported game version detected! To play you need to have American Truck Simulator v. [62ae3d5bd480]! Do you need help with downgrading?"

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  • Solution

Follow this Guide


1. open steam


2. right click ATS/ETS2 and go to properties 


3. hit the tab that says "BETAS"


4. hit the drop down menu that says "opt out of betas" and change it to 1.2.x


5. wait for it to update and launch MP






you can wait for the mod update to come out soon enough and play Arizona thats  what i'm doing because i'm lazy.



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This update has just came out and so MP is not available at the moment. If you want to play MP in ATS then you will have to roll back your current copy of the game. (same applies for ATS)




Edited by speedy88
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