enable legacy components that aren't active by default or reinstall specific redistributable files found in the game's folder Steam Community 1. Enable .NET Framework 3.5
Go to your game's installation folder (e.g., Steam\steamapps\common\Batman Arkham City GOTY\Setup ). Locate and run as an administrator. batman arkham city .net framework error windows 10
If the error persists, try these community-verified workarounds: Batman Arkham Asylum .NET Framework error on launcher enable legacy components that aren't active by default
This is the solution that works for 80% of users. reading something akin to:
You click "Play" on Steam, Epic Games, or GOG. You see the splash screen. Then, a stark white or grey dialog box appears, reading something akin to: