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.

[yyhy]

https://www.googlenestcommunity.com/t5/Streaming/Regarding-an-issue-with-Chromecast-2nd-gen-and-Chro...

看起來官方在修了...

[Samgo]

Me, too.

It has happened since yesterday.

[Owen0247]

我也一樣的問題，無法驗證，但我另外一個一代的Chromecast，還可以正常運作！

[Jerryaplex]

目前已知集中在第二代沒錯，但無論如何就算都遇到了也先不要還原原廠設定

[wittman231]

我也遇到了這個問題了，完全無法投影

[BillyinTO]

I did more or less the same as what u did (tried 2 Chromecast, can found them) & eventually stuck at the same step as u... 

[Sagar_Deshmukh]

Yes, facing exact same issue since yesterday

[johnbutcheracad]

Msg "We couldn't authenticate your Chromecast."!!!! Tried all suggestions and didn't work.

Google, what had you done?? Thousands of people complaining here.

I lost at least two hours of my Sunday trying to fix it!

Firmware?? What's the problem and how to fix it??

[Sweetfire1205]

I came here to say the same, it worked this afternoon then nothing tonight. Tried all the fixes, thought it was because my chromecast is old, but see the newer ones failing too.

[johnbutcheracad]

Very similar here. Noticed that is a large issue with maybe, millions affected. That Google work hard and fast to solve.

[Vedupadhyay]

Is it resolved? How? I'm still struggling 

[Anonymous]

No this seems to be on going I've just tried it again on my Chromecast and saying cannot authenticate this is after a reset as it failed yesterday evening

[Wyrm_EU]

Same here still not working

[felipenmartins]

I am also struggling here. Still not working.

[Zaar]

Same here. Is it fixed?

[Hevi]

Desde ayer domingo no puedo tampoco autenticarlo y el mio tb es antiguo..no se que generación es pero estuvo funcionando perfectamente el sábado..  y ahora quien nos va ayudar?? Ni siquiera se conunican cuando pones la acción de que te llamen...

[Flor87]

Estoy en la misma que vos no me  , funcionaba lo reinicie y ahora no me deja hacer la  autenticación hace más de 3 hs que estoy con esto

[johnbutcheracad]

Hola Flor, pelo jeito é um problema grande e que está afetando milhões. Que a Google resolva rápido (desculpe, falo português, inglês e francês, mas não espanhol ;), un abrazo.

[Chatice]

Hj 10/03/25 Brasil. Estou com o mesmo problema. Manda instalar o app, porém não dá continuidade 

[johnbutcheracad]

É isso mesmo, o problema está ocorrendo com muitos, em vários países, pelo que notei. E tentei receber ligação do suporte da Google, mas tbm não funcionou. Muito ruim.

[Djb200]

Same here Monday 03:17am. 

Been trying everything, using other Android and iPad and resetting Chromecast. Thought suddenly the old model (black disc) was no longer working, burr see others with the same issue. Next time I won't waste an hour and come here now I've found this community. 

Thanks for your post.

[Jo98]

Same 

[DarkModeler]

Same here.

[davepsklar]

I got the exact same problem. Is there a fix yet ? 

[kathy36617]

Same problem. Wtf!

[therefromhere]

Same issue, also with 2nd gen chromecast.

[Mfulu]

Same here. Don't know what is happening.  "HEY GOOGLE" we need answers. 

Please and thank you

[therefromhere]

Seems to be a global outage for gen 2 chromecasts - https://www.androidpolice.com/unable-to-cast-to-chromecast-youre-not-alone/

[Mig_Life]

Help me chromcast it how I watch tv

[Poigol5043]

Same problem here 10/3/25

[GujuofNetwork]

Same problem here 10/03/25. India

[KBMSalvation]

Hi mine stop working yesterday also did you manage to resolve it ,if you did how please 

[Maz27]

Sine last night, was thrown off Chromecast and not been able to reconnect. I've unistalled HOME app, I've factory reset chromecast...tried everything and about 16 hours later still get this message " not able to authenticationyour chromecast"

[Sarahbbz]

Was hoping to waken to it being fixed but alas still not working

[Ruby1491]

Have we got any solutions?

[Judunjai]

Same here. We couldn't authenticate your Chromecast 

This error from 10th March 2025

[Jeetu672004]

I have been struggling to fix the problem with Chromecast since yesterday, until I found this community link and saw it is a universal problem. I tried updating the Firmware, and further, it was giving an authentication issue. Kindly share the solution if anyone has received from Google or anywhere.

Cheers.! (JP)

[Sanleoit]

What is happening? Why no reply from Google?

[powerdive]

Yes, same here, was working yesterday. Stopped working. Device showing as off line in Home App. Did standard troubleshooting. Factory reset results in not able to authenticate message

[kumarvel]

Still having the same problem.