Error Code c00000005

This error message is caused by the game client trying to write to memory it doesn't have permission to access. 

To resolve this error message ensure: 

• Your graphics card meets the recommended specifications
• Your graphics drivers are up to date
• Your PC's dedicated graphics card is being used 

If you're still receiving the error message, try uninstalling and reinstalling the client or playing through the Jagex Launcher or Steam client.