Yep not happening for me either.

ipconfig /flushdns
 

This method I posted in the other thread about this error seems to be working for many. Open cmd prompt - type in ipconfig /flushdns - reset computer (optional?) and try and log in. Hope it helps! :)

FLush your DNS worked for me and a few others.

Still down? Thank god I am not able to play

I'm in!

Windows 8 / Windows 8.1 Flush DNS
Ensure that you're on the Windows 8 Start Screen.
Simply type cmd and the Windows search bar will appear on the right hand side with search results.
Right click on Command Prompt and click Run as administrator .
Type in the command ipconfig /flushdns.