I opened the Bnet launcher and it crashed right away. Tried again, same thing. I looking into why this could happen and was directed to delete related folders from %APPDATA% and %ProgramData% and uninstall and reinstall the launcher app. Then i ran into the issue of the installer locking up at 45%. I managed to get the launcher reinstalled by attempting to run Diablo 4, as it automatically reinstalled the launcher and fully installed. However, once reinstalled, it crashes when I attempt to log in. I can run WoW from the .exe but it seems all other games require the launcher to be running, so I no longer have access to all my other blizzard games.
Edit: I fixed this by reinstalling Windows. I assume the issue was registry errors.