Tried using the client on macOS High Sierra, every time I opened the client before I can type anything the client bugged the operating system and sent me back to the Mac log in screen. The new client has some compatibility issues with High Sierra. Maybe they'll be fixed when High Sierra beta 2 comes out.
OK. I found a temporary fix. Try download a clean LOL installer from league's website, replace the client in your application folder(or wherever the client is). Then, open the new client, after all the patching and updating is done, do NOT close the client or log on immediately. Check the box where it says disable the login animation, then you should be fine when you open the client next time after closing it. On both beta 1 and beta 2, there's still a minor resolution bug every time the game exits. The center of the desktop (not the game itself) goes to the very top left corner, weird. Haven't found a fix for this one.
Same here, it instantes crash and sent Back to Mac Los in screen. Recently the Lol had an update and i finally los in inside lol. everything worked perfect until 3 games it Start to do the same. I was able to play lol in High sierra when the lol was updated, after that is happening again the same Problem.
Same problem here.
Same problem here
Still broken in beta 2 released today. Apple even mentioned it in the release notes.
• League of Legends may quit unexpectedly on Mac models from 2012 and later.
still same problem, even after reinstalling
I had this issue too. I managed to play it in safe-mode, but it was useless. (: I fixed it by reinstalling LoL.
