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.

[MRyanNZ]

Just started here in NZ too

[Asorguy]

Chromecast audio says cannot authenticate when trying to add it to Google home.

[melquisedec2354]

gente o que houve ? sou do Brasil e estou com problemas também pra conectar meu dispositivo chromecast. diz na mensagem que nao consegue se comunicar com meu telefone no caso IOS testei em um dispositivo android e tbm nao funcionou. ALGUEM ME AJUDA 

[Jesss1]

Even after I factory reset it is still saying something about the firmware and it won't authenticate it

[OlivSerpa]

Chromecast 2 com o mesmo problema. Parou de nada. Nenhum procedimento funcionou. Brasil 

[Victorgoiburu]

Same problem here in Argentina 

[pablosazycz]

queremos sangre google! entrega al responsable de este caos! que rueden cabezas!! MUAAAJAJAJAJAJ

[Kirbird]

I want to know what Google is doing about it? If I have to buy a new device, you can be sure it WON'T be a Google one

[Reecemoss288]

I'm also having the same issue, glad it isn't just me

[wyrdR]

Same; was fine recently; even after power cycle/factory reset! Now I have issues with 3 Chromecast devices.

[Danttski]

Global issue with old gen Chromecast

Waiting for Google to fix or will they stop supporting old working Chromecast device?

[RachKealy]

I have the same problem in Ireland.. I've tried every troubleshooting tip available including factory reset and using different phones, nothing works. 

[NelsonJr]

É complicado como um erro aparentemente com o Google Home impacta a todos ao redor do mundo. Quase dá pra acreditar que é pra forçar a barra pra troca para aparelhos mais modernos, pra tirar os antigos de circulação.
tenho um Chromecast gen 2 e funcionava muito bem até alguns momentos atrás, quando parou de transmitir e apresentou esse erro.
Resolvi redefinir pra tentar resolver, agora o mesmo não autentica mais. Parabéns Google, por mais uma ação decepcionante.

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It's complicated how an error with Google Home apparently affects everyone. It's almost believable that it's to force the switch to more modern devices, to take the old ones out of circulation.
I have a Chromecast gen 2 and it worked very well until a few moments ago, when it stopped transmitting and presented this error.
I decided to reset it to try to solve it, but now it's not authenticating anymore. Congratulations Google, for another disappointing action.

[dda]

The same thing happened to me with my two Chromecast 2

[wyrdR]

Google, did you just brick my dozen Chromecast devices or is this just temporary ⁇

[anickerson]

Same! I'm really frustrated, I feel like I've been trying to fix this all day! I'm glad to find that I'm not the only person having issues- at least that's a relief. Honestly, if this can't be resolved soon I'll likely replace with a competitor..

[oflor]

mismo problema desde Argentina

[Jblancarte]

Same here in Mexico 

[Bogie23]

Looks like I'm going to go buy the newest Amazon Firestick!!!  This is bull!  There's no way to get any help from Google!  If there was and outage or scheduled maintenance or some other reason, they should at least put the reason on the Google Home ap!

[Byron1989]

Mi Chromecast presenta error no auténtica 

[max121]

nadie responde de Google, eso genera mala publicidad!

[Mepe]

I'm having the same problem in Argentina, does anyone could fix it? 

[Joebeck77]

Same, following

[Valwebbo]

Way to make a buck #Google! £100 for the new Google Streamer to replace failing Chromecast that worked perfectly fine until now. Absolutely furious 😡

[Alejoamaicha]

Mismo problema. Tengo 3 Chromecast generacion 1 con el mismo error. Ya probé restablecer de fábrica los 3 y siguen igual. Media pila Google! 

[MugiwaraJF86]

Same here, I got a v2 (I think) and the sale problem today. I tried reset but doesn't work.

[Oldmanpete]

What the heck does can't authenticate even mean? It's a legit Google Chromecast product that I have used for past few years without any issue.  If what others are saying is true and this is the result of a firmware upgrade, then Google should be compensating customers for this inconvenience.  

[ricob]

Hola igual, ayer funcionó mi Chromecast 2da generación, hoy no funciona, reinicie de fabrica, instale nuevamente app Home . No funciona 

[marcosanchav]

Same issues, any idea what to do?

[Samzee]

Smae thing, till yesterday it was working fine, today wont even connect

[DJWDVM]

Same issue here.  Frustrating!

[maadaranij]

same for me

[jlcarlso]

Same here. When is the fix coming!!!

[maadaranij]

Disappointed and unfair; Google has no right to damage products we have purchased.

[ArtyMarty]

Not working in Australia either 

[govisky]

Same thing in Uruguay.  Today my 2 chromecasts do not connect.  

[Cmillikan]

I'm having the same issue. Even after factory reset.

[Dragonfly27]

Same, Pennsylvania.

[hhghghhgghgh]

I no longer able to connect to my Chromecast it states that I need to authenticate my Chromecast no matter what I do I cannot accomplish anything I'm completely disconnected from my system what is going on with Google I can't take it anymore

somebody please help

[salasjairo]

Error de autentificacion también!