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.

[Bea161122]

Same, yasterday i used it fine, but now it doesn't work

[JR111]

I swear I literally tried everything you did in the exact same order! I'm not sure which Gen I have but this things worked fine for years! 

[JR111]

Okay yea I just checked. I've got a Gen 2 as well. Maybe it's Gen 2 thing??

[MarcoT]

Salve a tutti, il mio Chromecast che non ricordo se è seconda o terza generazione, non riesce più a connettersi ho provato in tutti modi inizialmente mi dava un errore di firmware non aggiornato ma non riuscivo a far l’aggiornamento… Ho provato a cambiare Connessione di ogni tipo, ma niente quando vado a riconfigurare alla fine, mi dà un errore che mi impossibilità alla riconnessione del dispositivo

Avete idee?

grazie

[AndyHA]

Confermo

[AndyHA]

Sembra un problema globale viste le altre decine di post con centinaia di risposte 

[CarolF]

Stesso problema 😭

[supratim29d]

Issue is fixed. Please keep your TV on after connecting to your Chromcast. Google will push the update and system will automatically update and your Chromcast will start working after few restarts.

Thank you Google!

[GiacomoMilazzo]

Stesso problema. Tutti e due i Chromecast hanno smesso di ricevere broadcast da app esterne. La schermata sulla TV li dà online e connessi alla rete (verificato dal router).  L'app Home su Android li vede offline.
Ho provato fare il reset di fabbrica ad uno dei due ma la procedura di setup fallisce o perché non trova il device o per errore di autenticazione.
Ho letto sulle pagine facebook di Made by Google che sconsigliano di fare il reset di fabbrica! E questo è male, perché, siccome è previsto dalla procedura, l'ho fatto ad uno dei due. Spero di non essermelo giocato e in attesa di veder tornare al lavoro il secondo!

[Danilo90]

Buonasera a tutti. 

Da questa sera il mio chromecast non trasmette più dallo smartphone ( Samsung galaxy s10+) restituendo l errore sai da YouTube che Netflix:

"Dispositivo non attendibile. Non è stato possibile verificare la chromecast. Il problema potrebbe essere dovuto a un firmware obsoleto del dispositivo".

Prima di tutto ho verificato ed il firmware è l ultimo rilasciato 1.56.275994.

Poi ho provato a resettare la chromecast e restituisce il seguente errore in fase di configurazione: "impossibile autenticare il dispositivo chromecast".

Premetto che ho chromecast e tutte e due danno lo stesso problema. 

Venerdì è stato l ultimo giorno che le ho utilizzate e funzionava tutto correttamente. 

Spero possiate aiutarmi. 

Grazie 

[CarolF]

È un problema globale, anch'io stesso identico! 

[Marchiuz]

Stesso identico problema anche per me

[Giova]

stesso problema anche io dal 09/03/2025

[Chrome1981]

Stessa cosa, magari qualche aggiornamento ha rotto tutto. 

[soopi25]

I have had my Chromecast set up for years and was last connected a few hours ago. When I try to reconnect I keep getting the error “TV may be set up, but we could not communicate with it from your iPhone."

I've tried restarting my router, phone, the Chromecast, the Google Home app several times and nothing's worked. I've checked the local network access and the bluetooth settings, all are fine. I've also factory reset my Chromecast and tried connecting through the SSID as suggested in other threads and get the error "Connection failed. Couldn't connect to Chromecast. Make sure local network access is enabled..." even though it's already enabled!

Help!!

[Livh]

Me too

[robbertbbb]

worldwide issue it seems

[alithv]

Same i have the exact same problem 

[MattQ]

Google announced the end of Chromecast: https://blog.google/products/google-nest/chromecast-history/
It looks like TLS security certificates on the devices are expiring and not being renewed by Google. Unless Google is willing to update the certificates there will now be 100 million new pieces of eWaste.

They could help us transition it to the OpenSource community and maintain it ourselves but that's up to Google.

[robbertbbb]

https://www.reddit.com/r/Chromecast/comments/1j7caui/did_google_just_brick_the_2nd_gen_chromecast/

[Anonymous]

Chromecast won't authenticate

please fix it

[Scr3am]

Same problem 

[Jayrup]

Same problem, glad it's not just me but still not happy

Yes, please fix it

[Michael07]

Old cromecast users always being skipped for testing. Fix your stuff google

[jskellogg]

Same problem. I literally was casting this morning, and couldn't 3 hours later. I tried removing my Chromecast and re-adding it via the Home app. Now, it says I cannot authenticate. 

[Daemonen]

Maybe same problem, two Chromecasts suddenly won't connect to our phones. 

I have restarted, rebooted and changed every setting in router and apps. 

[DarceeSchmidt]

My Chromecast just stopped working today, It's either a gen 2 or gen 3.  I tried to reconnect it in the Home app (android), as it was set up and showed on my TV, just not registering my wifi.  Nothing worked from the troubleshooting guidelines, so I ended up doing a hard factory reset. I deleted the old setting from the Home app.  Now, my CC won't even get set up.  When I open the Home app I click on "add device" it will find my CC and then want to establish a temporary internet connection.  After that it thinks and thinks and then says  "I cannot communicate with your CC."  

nothing has changed with our wifi

*all connections, tests and other devices work perfectly fine. It’s not the wifi or internet 

*privacy settings are all good for Google home 

I have done all these steps before and after the factory reset: 

1. Make sure your Chromecast is close to the Wi-Fi router. If you have a dual band router, try to set up your device on both the 2.4 GHz and 5 GHz bands.
2. Make sure Wi-Fi and Bluetooth are both turned ON on your phone or tablet.
3. Turn OFF mobile/cellular data.
4. Reboot your router. Most routers just require that you unplug the power source and then plug it back in to reboot.
5. Reboot Chromecast by removing the power cable, then reconnect it.
6. Make sure you're using the latest version of the Google Home app, by checking your app store for any updates.
7. Restart the Google Home app.

Nothing works.  I do not have an older device that supports the Google Home app (I tried) and we only have 1 TV.   Any tips/advice are welcome. 

I also tried to connect to the CC's wifi and open the Google Home App and see what happens then, but it still does not work.   Please help me as I've been trying to fix this for 3 hours. 

[Saltboy]

There are quite a few people (including myself) who have the same issue.  Google is aware.  So far, though, no solution to my knowledge.

[DarceeSchmidt]

Is this a thing that just happened today?

[Stanleyy]

Same here. I don't know why. I can't connect anymore. What is the problem???

[Alex_197]

If you have Android 10 - try the setup from this phone. I tried but can't move past the authentication.

[Vims1301]

Same ..suddenly from yesterday I m not able to cast...not sure if gen2 support is there or not from Google for chromcast 

[GiacomoMilazzo]

I've two Chromecast since years perfectly working.

This evening both stop to be available broadcasting from all apps such as YouTube, Amazon prime, Netflix, even the screen transmit of chrome browser didn't work.

I've rebooted them several times, rebooted to router too and so on.

They appears online showing picture browsed by web, datetime and weather temp. Of course they're connected to wifi, I can see from router interface too

If I look for them by Home app on Android smartphone they appear offline nevertheless on the tv screen I see online.

I've tried to fabric reset one but the configuration procedure fails with a "cannot authenticate" error. The device on tv screen shows is code and the one to setup.

No way to get it.

Considering that this happen to both I suspect some issue outside of my power

[dunilander]

 estou com o mesmo problema

[aldonunes]

Mine as well, it shows on TV the wallpaper, crunchyroll sees the Chromecast but don't connect. 

[Id34lny]

Got the same error now

[Guero951]

I tried everything you did too and having the same Authenticion message too it's a global issue 

[GiacomoMilazzo]

I cannot post the link but there's a post on Reddit on the r/Chromecast page

Global issue.

[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.

[PatSan]

I reset the chromecast because i could not stream from my streaming services (Netflix,  Pime etc). Now i can't config the device from Google home. The app find the device but it says it can't authenticate. Problems starts today.  Never have problemls earlier.