I know it's not technically PSO2 but the game uses it. GameGuard downloads everything, goes to authenticate, dies. On subsequent attempts at running the game it just dies. The 'advice' their help site gives, such as it is, involves restarting the computer (apparently causes other issues with PSO2, but sure, I've tried it), turning anti-virus off (bad idea, and if your game protection software is getting labelled as malware it has issues, but sure, I've tried it), nuking unused processes in task manager (stupid idea, and anyone has way too many things running after launch to really do this, either, but I've tried it with a few things it might dislike and gotten nowhere).
GameGuard's error 114 seems to be its most generic error that could have any number of causes, which is not helping me solve it.
Anyone know anything that does work?