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.

[covamz]

Buenas tardes, cuando dejo de funcionar restablecí a la configuración de fábrica dado que eran los pasos que me indicaba la app, me gustaría saber cuáles son los pasos que debo seguir ahora para hacer que vuelva a funcionar.

Gracias de antemano.

[Anonymous]

HO RISOLTO anche se avevo fatto il reset:

1) cambiate la data (5 marzo)

2) reimpostare il chromecast 

Una volta salvato non funzionerà ma mettete la data di oggi e FUNZIONA!!

[Samsam2]

Solution if you reset your device.

Set your phone date back before 7 mar 2025.

Open the Home app and configure the Chromecast.

The Chromecast will connect to wifi and update.

Set your phone date to auto again.

Test if it works, if not, then give it more time to update and try again.

[Lluch]

Hello, I have a Google Chromecast and it started not working, so we tried a lot of things and finally restored it to factory reset. We didnt knew about the information you wroted on thursday, we want to fix it or if it still not working, have a solution for your negligence. 

[videojay]

Mine is working again and I was one who factory reset, so I'm just here to let others know who are in the position I was in: do the trick others have mentioned of setting your phone clock back to be able to at least get it back online. It won't work for streaming with your phone clock set incorrectly, though. The other services like Hulu and YouTube won't work with an incorrect clock. So after connecting, set your phone back to normal. I just let the Chromecast stay connected to wifi and within a day Google has pushed the fix out to my device. Works as well as it always did now.

[Djernaes]

Thx, a lot. It also worked for me. 

Set the date to March 5, and then you can setup the chromecast.

[Gwizzard9]

It doesn’t work I did the change of dates and resetting with update, my chromcast still doesn’t work

[Loulid]

Bonjour,

Quand le problème sera résolu ?!!! 

merci 

[Loulid]

Avez vous une solution ? Que faire j’ai besoin de mon appareil ! 

[Fef]

Hello, my chromecast is still not working, is this normal?

[KLUROSU]

Yes, it's "normal": https://www.googlenestcommunity.com/t5/Streaming/Regarding-an-issue-with-Chromecast-2nd-gen-and-Chro...

[vlagger]

Just fixed now. I did factory reset and did't work without possibilty to teconfigure it.

I force date on the smartphone to first of march, after that I was able to reconfigure it with app home. Now (after the update) is still working fine.

[AlexMitre]

Hi, for some resons, i reset from factory my chromecat 2nd generation and now i can't configurate again. It's says " autentification problem" please hepl me to get my device recover. Tnk you

[KLUROSU]

Take a look at this buddy: https://www.googlenestcommunity.com/t5/Streaming/Regarding-an-issue-with-Chromecast-2nd-gen-and-Chro...

[Dann1]

Everytime that I try to connect my Chromecast 2 Gen with Google home it Appears " your Chromecast could not be authenticated, visit mobile app for support " 

Or maybe because it's to old? I have been with it for 8 years

Maybe it's fair 

[jerry_Tomson]

Your Chromecast 2nd Gen is quite old (released in 2015), but it should still work as Google hasn't officially discontinued support for it yet. However, the "could not be authenticated" error might be due to several reasons:

Possible Causes & Fixes:

1. Outdated Firmware

   • Try resetting your Chromecast by holding the button on the device until the LED blinks.
   • Reconnect it to Wi-Fi and check if it updates automatically.

2. Wi-Fi Compatibility Issues

   • Chromecast 2 only supports 2.4GHz and 5GHz Wi-Fi.
   • If you've recently updated your router, make sure it's broadcasting a compatible frequency.

3. Google Home App Issues

   • Ensure you’re using the latest version of the Google Home app.
   • Try reinstalling the app and attempting setup again.

4. Device Authentication Failure

   • Make sure your Google account is signed in properly.
   • If using a different Google account than before, try setting it up with the original one.

5. Network Firewall or Security Settings

   • Some routers have AP isolation or guest mode enabled, which can block Chromecast.
   • Disable these settings in your router's admin panel.

6. Check Google’s Support for Older Devices

   • If Google has discontinued support, authentication may not work.
   • Check Google’s official support page for any announcements.

Is It Time for an Upgrade?

If you’ve tried everything and it still doesn’t work, 8 years is a long time for a tech device. You might want to upgrade to a Chromecast with Google TV, which has better performance and long-term support.

[FahadKhan911]

Try another method.

Just change your smart phone/iphone/tab date to 1st March 2025 and then connect chromecast..after connecting to Chromecast it will load an update for Chromecast and will connect to your wifi then you will be able to watch anything you want.i tried on my side and its working for me.

[alptugan]

I fixed the same problem for my Gen 1 device with the following steps. Since the authentication depends on certificates, I thought that it was because of the certificate signing date causing authentication issues.

1. Factory reset to the chromecast

2. Install Google Home on any mobile device.

3. Set the date of the mobile device (the one you installed the Google Home app) before March 7 (My device stopped working on that day). The date may depend on your device's manufacturing date. So I recommend setting the date at least 1 year before.

4. Proceed with setup instructions from the Google Home app. Fingers crossed. 🤞🏻

5. After you successfully set up the device, and establish the connection. You can revert back your mobile device date.

[KLUROSU]

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

[adbeff]

Look for johnnyzero2. Hi reply has a link on how to do it. Good luck.

[FahadKhan911]

Try another method.

Just change your smart phone/iphone/tab date to 1st March 2025 and then connect chromecast..after connecting to Chromecast it will load an update for Chromecast and will connect to your wifi then you will be able to watch anything you want.i tried on my side and its working for me.

[muzzatg60]

[Hubabuba]

Mine too!

[Ry5]

Google is a JOKE!  Will soon be INSOLVENT!  I am beyond disappointed with them!

[Glaucio]

Eu resetei no mesmo dia que deu o problema e ate agora nada de resolver, tem previsão?

[sksck]

Chromecast 2 が数日前から機能しなくなり、Chromeが推奨している様に、トラブル発生時の対応としてChromecastをリセットしましたが未だ繋がらない状態です。何かの情報を求めてこちらを見つけましたがリセットしない様にあり大変困っています。新しいデバイスは高額で今直ぐに購入は出来ず間に合わせに他社製品のミラーリングのみの格安トングルを購入しましたが使用中はスマホ操作出来ないので私の用途に合わず無駄遣いしてしまいました。

リセットしてしまった人はもうChromecastを使えませんか？サポート修了された訳はないのでトラブル時推奨のリセットで使用出来なくなる事はないですよね？もしそうであれば問題前の告知がありますよね？解る方いますか？

[3004020Jon]

Как сбросить настрой ки 

[Ceder]

I allready resetted the chromecast! Now it says the iPhone doesnt allow to Connect due too local network? Can you help?

[DanDee]

What’s up with the “don’t factory reset your device” thing ?!

 It’s the first thing that the Google help page asks you to do when you try to troubleshoot your device and now it causes more problems with already broken device ?!

[Esnd1923]

Hi, when does the problem result? I ve factory reset one of my device and now i can't use it. Please i need it. 

[Daniela5]

Ok...fate al più presto. Grazie

[Daniela5]

Ma perché? Che è successo?

[Giug]

Hello, isn't there any solution already? 

[Talla]

Buongiorno avevo ripristinato il Chromecast e leggendo ho trovato un post che diceva di mettere il telefono alla data del 7 marzo, l'ho fatto e poi con l'app Home sono riuscito a riconfigurare il dispositivo che in seguito si è aggiornato, rimesso la data corretta e tutto funziona perfettamente.

[largius08]

Dear Sirs, 

unfortunately I  reset my Chromecast last week. Please Could you help me? Or could you send me a new chromecast?

looking forward your reply I remain. 
Regards. 
lara Giussani 

[okayreet]

How long is this going to take???

[th3apa]

I haven’t received the update! I’ve been triggering with the cast for so long and still won’t let me set it up on my devices 

[ElenaT]

cómo hago para actualizar el chromecast si he restablecido a valores de fábrica ??

[ElenaT]

Por favor, cuando van a dar la solución a los que restablecimos a valores de fábrica? 
ya llevamos una semana esperando!! Es mucho tiempo 

[Yolande]

It's been a week that we've all been patient! However, NO improvement! If that problem can't be fixed, just let us know ASAP! We have other options, I'm thinking about switching to ROKU.