Is your Chromecast V2 broken? Don't worry, Google is going to (slowly) fix it

Google has begun releasing a solution for the last issues with Chromecast (2nd gen) and Chromecast audio devices. Since 9 March 2025, users have encountered “untrusted device” issues, where they cannot cast content. The reason behind the problem appears to be an old security certificate.

If you have the same issue, keep your device online

The problem began when an intermediate security certificate, required for device authentication, expired on March 9. The expiration made the devices unrecognized and unable to function correctly.

Google acknowledged the problem and started deploying a fix. The company advises that users keep their devices online to obtain the update automatically over the next few days.

We have started to roll out a fix for the problem with Chromecast (2nd gen) and Chromecast Audio devices, which will be completed over the next few days. Your device must be connected to receive the update.

If you performed a factory reset during initial troubleshooting, you may still be experiencing an issue where you cannot re-setup your device. We are working to resolve this as soon as possible. Please continue to check the Community page here for updates and next steps.

If you’ve tried to resolve the problem by a factory reset, you’ll probably experience difficulty with re-setup processes as well. Google is currently working on a solution for that and recommends monitoring their support channels regularly for updates, but if you want to try a fix on your own, there’s a Reddit post that details the complete steps.

Others have found temporary fixes, such as changing device date settings before certificate expiration. However, these methods are not always effective and are known to interfere with other programs. If you’ve tried any of the above steps and haven’t managed to fix your Chromecast, it’s best to wait for the official fix from Google.