This problem occurs quite a lot for Win7 and Win Vista users. Please follow these steps precisely to get the game start:
First, go to your Steam Games Library, right-click on King Arthur, select Properties / Local Files / Verify integrity of game cache... - to retrieve any files deleted/missing
NOTE: If you are running Windows Vista or Windows 7, you may need to manually run secondary installers required by this game. (always right-click on the .exe file and choose: "Run as administrator" -
even if you already have admin rights!)
also
NOTE: If you are running Windows Vista or Windows 7, please completely exit Steam, and right-click on the shortcut which you use to launch Steam and select "Run as Administrator."
Exit Steam entirely.
Browse to your King Arthur installation folder (Usually C:\ Program Files \ Steam \ steamapps \ common \ king arthur - the role-playing wargame\)
You will need to run the following installers:
...\steamapps\common\king arthur - the role-playing wargame\InstallUtils\DirectX\DXSETUP.exe (
right-click and choose: "Run as administrator")
...\steamapps\common\king arthur - the role-playing wargame\InstallUtils\vcredist_x86_SP1.exe (
right-click and choose: "Run as administrator")
Restart your computer and test the issue again.
If you continue to have difficulty, run this installer as well:
...\steamapps\common\common\king arthur - the role-playing wargame\InstallUtils\PhysX_9.09.0814_SystemSoftware.exe (
right-click and choose: "Run as administrator")
Then, restart your computer once more and test the issue again.
Please also check your spyware, antivirus and firewall, they might have put some game files in quarantine - this was the problem for many other players who couldn't launch the game at all.
If the issue still persists, we will need to understand more about your computer and its specification. To do this, we need you to generate a diagnostic (DxDiag) report. Please send it to us to
support@kingarthurthewargame.com and describe what you have tried so far to launch the game.
Please also tell whether you are using a notebook or a desktop computer.
Hope this helps.