League of Legends RADS error [FIX]

By: Madeleine Dean
2 minute read

RADS errors are some of the most common errors affecting League of Legends. They prevent gamers from actually connecting to LoL’s servers. The complete error message is usually the following: Could not connect to the HTTP Server. Please check that your internet connection is enabled and that your firewall is not blocking access.

Here’s how one gamer describes this issue:

I just got a new computer with Windows 10 installed. I Installed LoL with no problem but when I try to launch the game it gives me RADS Error. I’ve read everything in the forum about it and tried everything but nothing seems to work.

If you currently can’t join LoL due to RADS errors, you’ve come to the right place. In this article, we’re going to list a series of workarounds that will help you to fix these errors.

How to fix League of Legends RADS errors

Solution 1Run the LoL Patcher as an Administrator.

Solution 2 — Add LoL to your exceptions list

  1. Go to Search > type Windows Firewall > go to Allow an app or feature trough Windows Firewall
  2. Add  lol.launcher.exe to your firewall’s exceptions list
  3. Launch the game again.

Solution 3 — Change your DNS

  1. Go to the Control Panel > Network and Internet > Network and Sharing Centre > Change adapter settings (left-hand side)
  2. Right click on your Wifi/Ethernet  connection > click Properties
  3. Select Internet Protocol Version 4 (TCP/IPv4) > go to Properties
  4. Select the “Use the following DNS server addresses” option > Preferred DNS server : , Alternative DNS server :
  5. Click OK > close everything > open League of Legends again.

If you get the same error again, follow the same steps, but select the “Obtain DNS server address automatically” option.

Solution 4 — Tweak file hosts

  1. Go to: C:\Windows\System32\drivers\etc
  2. Locate file hosts > open it with Notepad > add this line to bottom: l3cdn.riotgames.com > save it > launch the game again.

Solution 5 — Change your permissions

Use this guide from RiotGames to set up your computer permissions. Follow the instructions and then try to launch LoL again.

There you go, we hope that one of these solutions helped you to get rid of the RADS errors and launch LoL. If you’ve come across other solutions to fix this issue, you can list the troubleshooting steps in the comment section below.


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