If you tried to play recently League of Legends you may have got the next error:"Connection lost to HTTP server. Please check that your Internet connection is stable, and that HTTP connections are not being blocked by a firewall."
If you I found a solution on League of Legends forum. (here)
Member named "MADO123" posted a download for "rads_user_kernel.exe" file.
http://l3cdn.riotgames.com/releases/live/system/rads_user_kernel.exe
Once you use it to replace your old file at:
"League of Legends\rads\system"
The game should work.
