You have three main solutions, ranging from simple to advanced.
and try checking or unchecking the "Use 32-bit version" box. Verify Game Files : Right-click Assetto Corsa in your Steam Library, go to Properties Installed Files , and select Verify integrity of game files to ensure your base installation isn't actually corrupt. assetto corsa is obsolete v1163 is required link
Since "obsolete v1163 is required link" sounds like a specific error string or a forum thread title, I have compiled the information into a short technical brief explaining the issue and how to resolve it. You have three main solutions, ranging from simple
If you see that error, you don’t need a mysterious external link. You just need Steam, five minutes, and the steps above. You have three main solutions