I've looked at the wiki and nothing it says helps me. Solution-1a: The "Steam Client" may be in "Offline" mode and minimized, but must remain running while launching the game, even with "nvse_launcher" or "fnv4gb".Note that the "Steam Client" is what displays the "Library", "Store", etc. It is a separate piece of software from "the game" and performs the authentication that your copy of the game is legitimate. Solution-1b: Sometimes all that is needed is to open the "Task Manager" (<Ctrl+Alt+Del> or right-click on the "Task Bar" | "Start Task Manager"), switch to the "Processes" tab, and right-click the "image name" Steam.exe task and select "End Process Tree". Then restart the game again.Solution-1c: When this occurs with the "FalloutNVLauncher.exe" file after installing NVSE, some people have found that COPYing the "Steam.EXE" file (usually located in the "<install path>\Steam\" folder), into the game root folder (i.e. along with the NVSE.EXE file in "<install path>\SteamLibrary\steamapps\common\Fallout New Vegas"), resolves the problem.1a is useless. 1b I have deleted anything steam related in my task manager and follow instructions and it doesn't fix it. 1c Might be it but I don't have NVscript extender even installed, so I don't see how its that. Do I need NVSE to even launch the game? Still I continually get the same error code and the rest of the application load windows error(s) don't see to apply to me. I can play other gamers through vortex except New Vegas.