I have a Chromecast V2 and I factory reset it. I set the date back to
March 1st 2025 on my mobile phone and I was able to connect to my
Chromecast device; it updated automatically. Then I finished the setup
and I'm up and running again. Thanks Google...
You're not the only
one...https://www.tomsguide.com/entertainment/streaming-devices/chromecast-fail-users-across-the-world-are-saying-that-their-chromecasts-are-not-working