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.

[Rodrigo33]

When you reset the device you cannot reconfigure it because it throws an error when trying to do so, which means you are unable to use the Chromecast device at all.

[Maximus1016]

I tried factory reset without success.

[MariaIren]

Primeiro começou falando que o firmware poderia estar inspirado ou que tinha que atualizar ele e aí eu reiniciei o dispositivo e tá falando que não está conseguindo autenticar ele.

Dispositivo: Chromecast 2ª geração (acredito que seja)

Região: Brasil

Versão do firmware: Não sei

[alecdiez]

Volver el Chromecast a parámetros de fábrica no soluciona el problema...esto es mucho más grave 

[pnowis]

Hello,

I have restarted Chromecast by disconnecting power but also restarted to factory default (made it on several devices). None of these actions helps.
I am using Google Chromecast v2:
"build_version":"275994","cast_build_revision":"1.56.275994", "locale":"en-US"
Thanks for the support.
If you need more info please let me know how to grab it for you.
Best Regards
Piotr

[NiklasG]

After factory reset the device cannot be configured again. It fails on the connecting stage and cannot proceed. 

Where can we see updates on how and when this can be fixed? 

[JirkaS]

Hi there, restart does not work😒

[Anonymous]

My Chromecast also as of today stopped working. Restarted, Re-downloaded, Reset everything. Now it says cannot authenticate. Please fix this on your guys' end. My wife wanna watch white lotus tonight. Thanks

[CharlesBraedley]

This is impacting a bunch of people around the world. Do you have any new information to share?

[Fltadm]

I am having the same problem, mine is a second generation but I can't find the firmware. I am in Alberta Canada.

On the plus side others from around the world are having the same problem, so it's not a Canada pissed off Trump problem

[EduCava]

Tentei reiniciar e agora não reconhece a nova configuração 

[Virak]

Bonjour. Il m’est arrivé la même chose chez. Mes 3 Chromecast V2 ne veulent plus rien streamer…

Par contre les chromecast V3 continuent à fonctionner… mais pour combien de temps???

Je pense que Google a banni les Chromecast V2, comme ce fut le cas pour les V1 auparavant…

JE VAIS COMMENCER À BOYCOTTER LES PRODUITS GOOGLE

[Goofygdog]

Hi Jill

Would it be possible to post a link to where we can see updates re progress on fixing this issue?

Kind regards

[Reneaude]

Déjà fait rien ne marche, c'est la galère !!! Idem même problème que des centaines de personnes !!!

[Anonymous]

Eso no funciona ya se intentó y nada

[Anonymous]

Google Chromecast 2 FHD HDMI Streaming Media Madrid España 

[Aklindh]

Any update on when this will be fixed? 

[JohnnySonic]

It's the first thing users do when it doesn't work, users all over the world are having issues 

[FrancisCN]

I'm having the same issue here in Brazil.

It was working few hours ago and now no more. After the factory reset it can't authenticate in the Google home app again.

My device is the Chromecast 2nd gen.

Brazil

[pgugougg]

I've done all that. Nothing helped ! 

[EvaH]

Hi Jill, I had the same issue today, factory reset did not help 

[Dani12]

Provato e riprovato e continua a dire che è impossibile autenticare .

[Carlosgap]

Same here, reseting doesn't work, nothing works

[Lu6]

Estou usando a segunda geração sou do Brasil Brasília DF e parou de funcionar e não atualiza mesmo fazendo tudo que foi falado pra fazer

[Menebrio]

Second gen ChromeCast in Euro region.

I was using it normally today; made a pause on my watching, Turning off the TV and when I tried to re cast hours later, I got the Authentication error. The device remained on my Wifi as it was going through the images, but home app showed it as offline (Orange router app showed the Chromecast was still connected and active).

I tried unplugging for 5 minutes (which still went into my wifi but no casting function), factory reset, deleting it from Home app, recreating Home profile, resetting my Wifi + renewed IP.

But it is still unable to authenticate.

[wrkbuttes]

Any solution yet? Appears a worldwide authentication problem.

[BrandiI]

I am also having this issue in British Columbia. It was working fine but just stopped. I don't know our model but I think it may be a 2

[QueladillaGgl]

What's not getting authenticated is the home app. The device itself is working perfectly fine. It gets reseted, it goes to the setup process smoothly, it generates the pairing code and then Home app says it couldn't authenticate!!! 😡🤬 I tried several times already. Also following the hack of connecting directly to the device. It's really annoying!!!!

In the morning working perfectly and in the evening clashing. Could you rollback wathever change you may have released!!! It's really upsetting...

[Hidekimmm]

I'm with the same issue and factory reset didn't help at all. It's not working 

[Raut002]

I'm in New Zealand and have Gen 2 Chromecast, same error. 

[g00gl3]

How many times?

[jaa313]

system firmware: 275994

cast firmware 1.56.275994

netherlands

[FacuMarolda]

Chromecast gen2 in Argentina. 

[Sanavio]

We did it already... I tried to reset both of my devices, I've even uninstalled my Google Home app... nothing is fixing this problem. This seems to be global, I'm from São Paulo, Brasil.

[LeleAcu]

Tengo el mismo inconveniente al igual que todos los usuarios que se encuentran manifestando esto en dicho espacio. Hace 2 hs funcionaba perfectamente, de un momento al otro se desconecto y no se pudo transmitir más. Me encuentro en Argentina, Ciudad autónoma de Buenos Aires.

Técnicamente se que es un modelo 2015

[brianjfsab]

Connecticut US firmware number

System 275994

Cast 1.56.275994

[Aneczkaaa]

I can't connect the Chromecast with Google home app.- no authorisation even after reset and restart. I'm from Ireland, Co Westmeath

[OhStacie]

Ive tried all methods of troubleshooting. And i mean ALL methods. Still nothing.

[RenaeP]

Did the factory reset but it still won't work 

[estebanvenon]

Hello Jill, this does not work neither.

Do you know if this is because a bug in a release or so?

any ETA would be appreciated .

cheers