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.

[dmopont]

Same problem here, im from Brazil

[AjaLorraine]

I Keep Getting a Message...

We Couldn't Authenticate Your Chromecast. 

It's Very Frustrating. I Have 2 Devices and Both Will Not Connect. I've Tried Everything. 

[cathaho]

Me too!!

[vroomvroom]

Same here ..

[TommiR]

Same here, in Sweden. I have 2 second generation chromecast and 1 chromecast audio devices. They connect to my router but it is impossible to cast anything to any of them.

[Neustaj]

Today all three of my chromecast audio stopped working. They cannot be connected too. I reset the modem, wifi,phone and chromecast and I can’t connect to any of them. 

[marcosmribeiro]

Infelizmente tive o mesmo problema aqui no Brasil. Vamos aguardar o que o Google tem a nos dizer, mas acredito que foi mesmo descontinuado o suporte ao Chromecast! Triste!

[TZman]

Same here

[anduso2]

VIÓ... HOLA PÁSAME EXACTO, LO MISMO... YA EN EL SIRVE.

[zabolots]

Starting some time today, all three of my Chromecast Audio devices started showing as "offline" in the Google Home app on my Pixel Table. Can't cast from Home (obviously) and the "Cast screen to device" option fails as well. Can't stream directly from Spotify from my Pixel Tablet and it fails for my daughter on her iPhone as well.

Rebooted the router (no other devices are having issues) and power-cycled the Chromecast Audio devices but they still show up as "offline". They show as connected devices on my router admin page so they did connect via WiFi/DHCP. I also don't see the built-in Chromecast SSID's that show up when they aren't connected to WiFi.

I'm guessing some sort of authentication to a back end service is failing on the Google side of things.

Anyone else having issues?

[terrybader]

Same. Factory reset and now Chromecast cannot authenticate when trying to re-add

[GSHERMPRIME]

No warning, just bricked. I want my money back.

[Stef69]

Depuis cet après-midi, impossible de faire fonctionner mon Chromecast sur ma TV alors que je n'ai jamais eu de problème... j'ai tout essayé : réinstaller Google Home, changer les câbles d'alimentation, changer de TV, redémarrer ma freebox, mais toujours rien. Un message m'indiquer qu'il est impossible d'authentifier mon Chromecast...

[DebWilly]

Today I could not connect to my streaming services so I performed a factory reset and tried connecting through the home app. All goes well until it tries to authenticate.

I have reset router, restarted my Android phone and also performed another factory reset on Chrome.

I have tried all the proposed solutions on the forum without success. These problems seemed to occur in 2023.

Any proposed solutions other than going out and buying an updated product?

[Gonzalonog]

I am having the same problems in Argentina, it started failing today 9/3/2025, I found no solution.

[Barbara84]

Lo mismo. Soy de Argentina y de la nada me aparecio ese error No se pudo verificar Chromecast. Esto podría deberse a que el firmware del dispositivo no está actualizado. No lo quise reiniciar xq te pide autenticar el dispositivo y dicen que es peor.. espero que google responda algo.. ya sea una solucion o que diga si dejo de andar definitivamente. Pero veo que es a nivel mundial

[Kev311]

OMFG I've been having the same problem, started today! My Chromecast has worked for years, and any issue I managed to resolve within minutes. Not so today! It has been maddening! I've tried every suggested troubleshooting method, and nothing has worked. I am quite dependent on my Chromecast so this is infuriating.

There's no way to connect it to one's phone or PC and run diagnostics, so I am truly stymied.

I hope somebody discovers the solution. Is my Chromecast garbage now?

[Chillout]

Same here Montreal, Quebec, Canada

[WillIV]

Can't get connected to customer service either. Phone call disconnects and I get a 404 error when I try to send a message.

[KrytiCat]

Do you have the chromecast model; NC2-6A5 ?

[Rob242]

Yes I do. I believe that's 2nd gen model

[Miguel2025]

Desde Peru Igual "No se pudo autenticar tu chromecast v2 ".  Visita support.google.com y nada

[DDG1]

Bueno creo que Trump corto el accesso para Peru. 

[Sudaca2025]

Trump realmente puede chuparme el p... y el Golfo se llama Golfo de México ¡¡¡pinches gringos!!!

[DDG1]

Lol cambio de nuevo, ahorra se llama el Golfo de Trump. 

[greyarea337]

I wonder if the location of the main server is in a state that no longer practices day light savings. So the security kicked in because of incorrect time between device and the server. I bet if we can change the system time on the Chromecast device back an hour.... It would work again.

[Becuziamrenee]

Hmmmm 🤔 but I've had this chromecast device for years. I'm glad to hear it's not just me but I still am going nuts missing my shows lol 

[bumbJiggyK]

If you haven't done a factory reset, and your Chromecast still shows in your devices (you are lucky btw lol) you can change the date on your phone. But you will have to make sure it doesn't get to 9 March 2025, and I'd say never at all to be safe. If you can set your phone date back a week??? lol  It's not a server issue, it's a date in code/certificate authentication something-or-other. Can and will most likely be fixed but may be a bit. Good geek thread explainer. https://www.reddit.com/r/Chromecast/comments/1j7lhrs/the_chromecast_2s_device_authentication/

[Wingqvist]

Copying part of the text: "Google issued an intermediate CA, presumably the one for all 2nd-gen devices, with a validity period of only 10 years, and it just expired. As a result, none of Google's official clients succeed in validating the device as genuine and they refuse to talk to it, including during initial setup. Google can fix this." ... "but it'll probably take a week or so, as it'll require syncing up with the release cycles of Chrome,"

[BadFlash]

An intermediary SSL Certificate expired on you CC device.  Google needs to either renew that certificate and resign all CC SSL certificates with the new intermediary SSL Certificate or come up with another solution that would be quicker to deploy on those millions of devices.

[GiacomoMilazzo]

I've suspected the same. But, just to know, what's about those devices that somebody has reset to fabric?
I'm one of them 🙂 I've two c/cast, yesterday attempting to solve I've reset to fabric one of the two...after all following the troubleshooting guide.

[Bas3]

You can re-add the chromecast easily, by putting the date of you phone 1 day back, in settings. 

Many apps will now not be working, but the Home-app does. Enter the home-app, and add the chromecast. Now the home-app will see the chrome-app, and you will be able to do it. 

After that, go back to settings, and put your phone back to the date of today. 

You will still not be able to use the chromecast, but atleast Home-app will see it again, after that reset of your chromecast yesterday...

I did the same and that works. 

But now we will be waiting for Google's updated firmware, I'm afraid. Good luck! 

[Ritesh1]

Did anybody try ? Does it work ?

[Guero951]

I reset my Chromecast but it says can't  authentication my Chromecast 

[TiagoNk]

O meu Chromecast está apresentando o mesmo erro. Não consigo conectar, aparece um erro de autenticação aconteceu agora a tarde.

[Plinio]

Mesmo problemas: 

Não foi possível autenticar o Chromecast.

Acesse support.google.com/chromecast para resolver o problema.

[Bssanchez]

Tengo el mismo problema 

[Mariano1988]

Me sumo a la misma problematica, y el soporte no presenta ninguna soñucion a ese error 

[Apexsurf]

Hi, our chrome cast, think it’s gen2 was working fine this am, then this eve won’t communicate with iPad, iPhones etc. 

the logo is showing on the phone and when clicked gives the option of living room to but nothing happens.

So far we have tried 

factory reset on chrome cast 

deleting google home app and re loading and going through the steps 

turning off wi Fi for several minutes then back on

turning off chrome cast for few mins then back on

trying to reboot all devices, Wi-Fi router, chrome cast then reload everything etc etc

trying the 5 steps on the device help page

still nothing.

It’s worked fine for years, nothing has changed, everything in usual places, same tv, phone, iPad etc

it gets through the process, finds the device, ‘connecting to chrome cast’, passwords on screen is the same, set it to ‘living room’, connecting to Wi-Fi….says ‘connected’ then get the dreaded ‘something went wrong, living room tv may be set up, but we could not communicate with it….’

have tried all the steps on iPhone privacy, local network, restarting phone, Wi-Fi etc, tried to connect direct to chrome cast SSID, enabled local settings etc etc etc, all of those steps several times over…. Still won’t work. The logo will show on say bbc iPlayer but if you click on it nothing happens or we get the ‘check local network settings’ message.

The house wifi is working fine, the same thing happens if we try on my phone, wife’s phone, iPads etc.

pretty much ready to give up on it.

any help anyone or is the chrome cast screwed. 

[Zarieah]

I am having the same issue just today