Game cannot run when click the "play" button with error (6d)

[RemiliaScarlet]

Remilia — Not SE customer service here, just trying to be helpful. Have you tried switching the launcher back to the old mode? (Go into settings in the launcher, and you can switch which launcher you're using from there.) For a number of my friends having the issue, that was able to get them back in the game at least for now. I don't know if it'll work for everyone, but it might be worth trying if you haven't already.

Of course, and it doesn't make any sense.