EldoDargo (EUW)
: Dear fellow summoner, i faced this issue over the past months as well. From various threads i have read the general taste is that something interferes with LoL and causes this critical error (this can be any program installed and is up while you are running LoL). I have never received an official reply (or any tip) on my post or any other recent posts about this issue. Here is a quite extensive thread about this error https://boards.na.leagueoflegends.com/en/c/bug-report/GX3Zhxwe-game-client-anti-cheat-known-issues-and-fixes . Although it is a bit old, maybe you can find the solution there. I kept uninstalling and installing the game. It worked for a couple of days or maybe a week and then again this error appeared. Recently i had to re-install Windows due to a problem. From then, this critical error hasn't appeared. So I suppose that this error had something to do with an incomplete or problematic windows update.
update: I deleted some stuff and now everything works properly,thanks again!
EldoDargo (EUW)
: Dear fellow summoner, i faced this issue over the past months as well. From various threads i have read the general taste is that something interferes with LoL and causes this critical error (this can be any program installed and is up while you are running LoL). I have never received an official reply (or any tip) on my post or any other recent posts about this issue. Here is a quite extensive thread about this error https://boards.na.leagueoflegends.com/en/c/bug-report/GX3Zhxwe-game-client-anti-cheat-known-issues-and-fixes . Although it is a bit old, maybe you can find the solution there. I kept uninstalling and installing the game. It worked for a couple of days or maybe a week and then again this error appeared. Recently i had to re-install Windows due to a problem. From then, this critical error hasn't appeared. So I suppose that this error had something to do with an incomplete or problematic windows update.
Thank you for the response,in the period of 2-3 years of having this system I installed a lot of useless files and programs.I'll try to reinstall windows in the future or clear some stuff.
Rioter Comments
Hansiman (EUW)
: LeaverBuster is working as intended here. Your ability to play is your responsibility, and if you keep queueing up knowing that you won't be able to enter the game, then that's a decision you make. If you're experiencing technical issues, it is you who will need to attempt to fix them. Waiting around not doing anything won't do you much good. Here on the boards you can get advice from other players, or you can [send in a ticket to support](https://support.riotgames.com/hc/en-us/requests/new). In either case, it requires you to be proactive about the problem.
Thank you for the response but it's pretty annoying to have to wait 20 minutes because of a bug..I'll try restarting my pc after every match..
Rioter Comments

Galavis232RO

Level 62 (EUW)
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