Firewall issue with league of legends

Are you sure it's your firewall and not LoL that is unavailable?

Did you disable the firewall and try to connect? I don't think it's coming from the firewall.

Hello,
I have the same problem with "League of Legends." When I start a game, it says "your firewall might be blocking the connection," but I disable my mod and re-enable it after, then I try to reconnect to the game and it works very well. Sometimes it doesn't work the first time, and I try disabling and enabling it again, then it works. Well, for me, it works just fine.

Uninstall and reinstall LOL while accepting everything.

hi there, there are two solutions
the first one is to uninstall programs like IObit or CCleaner or any other programs that deal with the net or the internet cache, or just disable them with Your Installer
the second one is to copy the game installed, for example in my case C:\Riot Games\League of Legends, to another partition, then uninstall it with Your Installer or another program that removes the roots of programs, then launch the LOL application or download it again, it's 33 MB, then launch it normally and when it starts to download, stop it at 1/2 ....1%, then go to where you copied your game and copy the RADS and logs folders into the game in the C drive, then copy and replace, you should download some files but just between 40MB and 80MB, no more.
the second method works 100% or 1000% lol