It's an expired intermediate certificate in the chain of the device certificate. https://old.reddit.com/r/Chromecast/comments/1j7lhrs/the_chromecast_2s_device_

It's an expired intermediate certificate in the chain of the device certificate. https://old.reddit.com/r/Chromecast/comments/1j7lhrs/the_chromecast_2s_device_authentication/ https://old.reddit.com/r/Chromecast/comments/1j7lhrs/the_chr... and https://www.theregister.com/2025/03/10/google_chromecast_outage/ https://www.theregister.com/2025/03/10/google_chromecast_out...