Install the latest Visual C++ Redistributable from Microsoft.
Click the next to your drive and select Repair Library . Address Anti-Virus Blocks : forts-fix-repair-steam-generic-rar
: Usually involves running the Steam client in the background and launching the game via the Forts.exe included in the fix. Install the latest Visual C++ Redistributable from Microsoft
Commonly, the Forts.exe or specific .dll files are flagged as false positives. Adding the game folder to your anti-virus whitelist often fixes "access denied" or launch errors. For those using an "Online Fix": forts-fix-repair-steam-generic-rar