Regarding an issue with Chromecast 2nd gen and Chromecast Audio

[GoogleNestTeam]

Update 3/20/25

Hey folks, 

If you previously performed a factory reset, we’re happy to report that the Google Home app update will reach all users today.

Please make sure you’re on version 3.30.1.6 for Android and 3.30.106 for iOS to set up your Chromecast (2nd gen) and Chromecast Audio. Check out this help center article if you need help updating the Google Home app.

If you’re still experiencing problems during setup, please reach out to customer support for further assistance. 

Thanks again for your patience while we worked to resolve this issue!

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Update 3/17/25:

Hi folks,

Thank you for your patience as we worked to resolve the issue with Chromecast (2nd gen) and Chromecast Audio devices. As of today, this disruption has been fixed.

If you did not perform a factory reset, your device should now function normally. If it is still not functioning as intended check the firmware version of your device by following the instructions here. If your device is not on the corresponding firmware version, please try rebooting your device to start the update process.

For users who have performed a factory reset, you will need to update your Google Home app to the latest version (3.30.1.6 for Android and 3.30.106 for iOS) to set up your Chromecast (2nd gen) or Chromecast Audio device again. The app roll out has begun and may take a few days to roll out to everyone. We’ll post a confirmation once the roll out to all users is complete.

We sincerely apologize for this disruption and any inconvenience it may have caused, and we are committed to ensuring all users are back up and running as quickly as possible.

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Update 3/14/25:

Hi everyone,

Thank you again for your patience, we have some good news - the fix should reach all users today. If your device has received the update it should be on the following firmware versions:

Chromecast (2nd gen): Firmware version 1.56.467165

Chromecast Audio: Firmware version 1.56.467166

Check the firmware version of your device by following the instructions here. If your device is not on the corresponding firmware version, please try rebooting your device to start the update process.

Please note: If you performed a factory reset during the troubleshooting process, you may still be experiencing an issue where you cannot re-setup the device. The team is working diligently to resolve this, and we will provide next steps as soon as possible.

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Update 3/13/25:

Hey everyone, thank you for your patience while we work to resolve this issue. Here’s the latest:

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.

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Update 3/11/25: 

Hi all,

An update on the situation: the team has identified the cause of the issue impacting Chromecast (2nd gen) and Chromecast Audio devices.

Please do not factory reset your device. If you previously performed a factory reset during troubleshooting, you may also be experiencing an issue where you're unable to re-setup your device. The team has identified the cause for this as well and is currently working on a fix.

We’re working to resolve this as soon as possible, and will keep you updated when there is more to share.

We sincerely apologize for the inconvenience, and appreciate your patience in the meantime.

Thank you.

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Hello,

We're aware of an emerging issue impacting Chromecast 2nd gen and Chromecast Audio devices, and we are working on a fix.

Do not factory reset your device - we will keep you all updated when the fix rolls out. If you have already factory reset your device, we will provide instructions to set your device back up as soon as possible.

Thank you for your patience.

[Carstenk]

Same here. Stopped working all of a sudden and refuses to setup   even from scratch. "Can't authenticate your Chromecast".  What's happening???

[Bnm1]

As an aside, all my other google home automations are still

working. Just the chrome casts have disconnected.

[Kurtmieville]

If they really ended support on a Sunday evening without any notice, this is well out of order.

[JaceManiac]

I got the same problem.

Did a factory reset and now it says it can authenticate my chromecast anymore

[Gpat]

Same issue 

From morning it shows not trusted device and request to update firmware. I did factory reset but it still does not work

[Jalan2Liburan]

I m from Belgium, it happens to me too with the same message. Any solution? 

[Kiranp]

Same here. India

[Cerit0]

Same here, from Argentina

[ads_]

same here. it was casting perfectly fine the entire day, then i paused my show to do something for about 30 minutes, give or take, then it just wouldn’t connect again no matter how many times i restarted just about everything 😕

[sammyjomama]

this quite literally just happened to me at 12:50p today. what in the world do we do - just install a newer model? it would be great if google would tell us what to do. 

[Sputnik]

Same here in Sweden 😢

[Karlarosarosa_]

O mesmo aqui no Brasil 

[spooka]

I am facing the same issue. I tried a factory reset and tried to add the device to my Google home but I am unable to do so now. It says the authentication is unsuccessful.

[CEinCville]

Me too. The Chromecast on my TV but my phone and the Google home app say it's 'offline'  unplugged turned everything off, back on again. Have Wi-Fi. Try to support call got cut off they will not allow me to call again. So frustrating! I keep thinking of something to do with daylight savings time. But that's unlikely. So, totally feel your pain! 

[Larsthors]

Thank god i didnt buy the Google Car

[CaptSternn]

Same here. Can't authenticate after factory reset. Seems to be happening to all 2nd gen Chromecast and audio devices.

[Iwanttowatchtv]

Same issue, Belgium

[Sara2009]

Same here Denmark…☹️

[JoRe]

Same issue, Austria 

[Linrick04]

Same in NH, USA

[Amanda00BR]

Same issue, Brazil

[MichalPoland]

The same in Poland

[Redcalibra]

Cannot reconnect my Chromecast-2 in the Netherlands as well.
Factory reset of CC and my router. 
Even removed the "Home" app, android reboot.
Nothing helps.

Must be an issue at google.

[Kernel64]

Gen2 chromecast. same issue. Can't configure after factory reset. Cannot authenticate error.

[MarianaG]

O mesmo acontecendo aqui. 

[Gooberhead]

Both of mine too grrrrrr!!!! Not happy!!!!

[Dimker]

Same happened to me...

[Rob242]

Same here in Canada. Started about an hour ago. Was having issues with casting so I reset to factory setting like I always do when I'm having casting problems. But this time it shows "cannot authenticate Chromecast". I have 2nd gen Chromecast. 

[Linrick04]

 

[Mglj]

Same here in Netherlands 

[Fer2024arg]

I have the same problem here in Argentina. I have two Chromecast devices and both have the same problem. How do I fix them?

[kakali]

Same problem from Greece! Gen 2 devise 

[Bas3]

Ok, so 2nd and third Gen Chromecasts all have this problem. First Gen appears not to have this problem. Strange, must be an expired certificate in the firmware. So we'll be all waiting till Google pushes a firmware update, which can take months, if they even update it. Real crap, have to watch television on my phone for now 😑

[AmirTugi]

Same here. Seems to me to be a service issues by Google. 

Let's wait for them to answer us what's going on

[Kurtmieville]

I doubt it's a firmware issue. If that were the case, chromecast audios would not be affected. They haven't had updates for years. A certificate issue is more likely.

[Tobias1974]

Same happend here, both Chromecasts same issues - untrusted firmware. No warning, I did read Google stopped updating service on them somewhere. If this is the case, might consider staying away from all Google service and products. 

[morf]

Same here!!!! All my chromecast audio devices!!! Reset everything but can't add any chromecast audio to google home!

[MaraB]

Ho lo stesso problema, si è verificato subito dopo l'aggiornamento dell'app Home

[parha]

Same here, gen 2, Sweden.

[Anonymous]

Lo mismo por acá, la palmó...