over 1 year ago - dudley.k - Direct link
Hello, based on the link you provided it shows that you were not connected to the internet when attempting to launch the game. Have you tried connecting your Steam Deck to the internet and then launching Warframe?

If that does not work, then please reach out to our Support team and they may be able to help diagnose your specific Steam Deck issue.
over 1 year ago - dudley.k - Direct link
Hello, apologies for the delay. You can find our Support team here - Warframe Support[digitalextremes.zendesk.com] if you send them a detailed ticket they may be able to help diagnose the issue.

I'm sorry that you have not been able to play and I hope that it gets resolved soon.