Assetto Corsa/Content Manager launches but Steam doesn't recognize it.

629
Canada
Ontario, Canada
B-Line98
My computer crashed and now suddenly Steam doesn't know my assetto corsa is installed but i still launch it through content manager. Any idea how I can bring it back to my steam? None of my dlc cars work and I cant really just redownload the game because my internet is booney spec. I can't even verify the game files the way it is right now.
 
90
France
France
I had the same mater, steam no longer recognize the installation of AC, don't know why, I did not find a solution. You must ask on kunos or steam forum.