This error seems to be happening mostly to us New Zealand players.. looks like a DNS issue. The fix is to use a VPN tunnel for when you first open a launcher or edit the host file.
To edit the Host file do the following:
- Click Start
- All Programs
- Right click Notepad and select Run as administrator
- Click Continue on the “Windows needs your permission” UAC window.
- When Notepad opens Click File -> Open
- In the filename field type C:WindowsSystem32Driversetchosts
- Click Open
- Paste in and save the host file: