RADS error: Fix

So like what seems like many of you are experiencing, I had the RADS error saying my firewall was blocking access to league. Before you try any fix, first disable your firewall and try launching league to ensure that your firewall isn't actually the issue.

If you have confirmed your firewall is not the issue, I found that changing your DNS to google's default fixed the issue for me. Try the following:

Open the control panel and go to Network and Sharing Center Click on Change Adapter Settings Right click on your local area connection and go to properties Locate "internet protocol version 4 (TCP/IPv4) and double click it In the bottom field, click on "use the following DNS server address" on preferred DNS server enter : 8.8.8.8 on Alternate DNS server enter: 8.8.4.4

This allowed me to open the client just fine. Best of luck.