DNS Lookup Failure

It appears that your DNS is malfunctioning.

DNS (Domain Name Service) is a web service that translates a website's name into its numeric internet address. When Warframe attempts this step in the connection process your system is unable to communicate correctly.

This can be caused by your Internet Service Provider's DNS servers malfunctioning or a faulty Proxy/VPN configuration.

Please try the following to resolve this:

Reboot your computer / console, modem and router.
If you are still experiencing this issue, please contact your Internet Service Provider.
If this problem persists, changing your PC's DNS settings to use the Google Public DNS might help. For a step by step guide about how to do this, please follow this link to the Google doc manual: Google Public DNS