For a temporary fix you can go to the STO EXE file and change preferences to run in compatability mode XP (or anything that will force STO to run with Directx 9 instead of 11. You will be able to run STO until ARC finally fixes the game.
I finally found a work-around since ARC can't support the latest directx (11). Find the STO EXE file and change the preferences to run in compatability mode of XP or something else that will force directx 9. It will fix it so you can log on, but this shouldn't excuse ARC from fixing the game.
I have been having the same problem for over a week and they told me to reinstall the game and launcher which did nothing. I also have all my drivers and direct x updated. I believe this is their problem that they are failing to address. This is happening to other friends and no one can get logged in because of crash on…