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.

[Joop11055]

I have also reset my cast.  Hope it can be fixed soon.

[trudicoco_rhum]

Domenica, al mancato funzionamento ho resettato come da indicazione del Vs supporto. ora, cosa faccio???????

[rehamalaa25]

Yes please fix this ASAP and how will get the updates then

[JustinShen]

serious? You are google so big company you can’t provide the solution passed 2 days?

[FNR]

Any update on this issue ?

[Aicirtap]

It has been 2 days already. How hard is it to fix. You haven't been out publicly and adressed this problem. Many of us already reset our devices! Please fix this issue! 

[Veronica2]

Arreglaron el problema?? Aún no podemos conectar el dispositivo!

[roberttbg]

Hey there.

I got this error message "we couldn't authenticate your chromecast" on the "HOME" apps on my android phone.

When is this going to be fixed ??? 

[Izazael]

Not good enough. 

[Gi1]

It's too late to say "Do not factory reset your device". your FAQ say to factory reset the device, we have already done it!

[ArtCon]

Subject: Urgent: Immediate Resolution Required for Chromecast Authentication Certificate Issue

Dear Google Support Team,

We are writing to urgently request an immediate update regarding a critical issue affecting second-generation Chromecast and Chromecast Audio devices. Since the late afternoon of March 9, 2025, numerous users have reported encountering "Untrusted device" errors when attempting to cast content. This issue has rendered their devices inoperative.

Upon investigation, it appears that the root cause is an expired authentication certificate essential for verifying these devices. This expiration aligns with the surge in reported problems starting from the aforementioned date. Given that such certificates are integral to the device's security and functionality, users are unable to rectify this issue independently. Consequently, a prompt response and resolution from Google are imperative.

We acknowledge that Google has recognized this problem and is actively working on a fix. However, affected users are currently left without a functional solution and are seeking immediate assistance.

We urge Google to expedite the release of an update or provide a workaround to address this authentication certificate issue promptly. Timely communication and action are crucial to restore the functionality of these devices and maintain user trust.

Thank you for your immediate attention to this matter.

Sincerely,

Art Con

[simplemomma]

There's still no update how many days this issue will fix? 

[Asterix79]

It is disappointing that this issue was not linked to the support page which tells you to restart your Chromecast as an initial troubleshooting steps!

[AjoshiSql]

Ahh..  I Changed my mobile twice to connect chromecast

[markymark72]

absolutely shambolic.

[streamer74]

Renewing and distributing new certificates do not take days. Google should now prioritize this as there are 1000s of angry CC-users round the world. waiting…

[Sah1]

Great, so I have movie that I rented, it started via YouTube but sound only, no picture. In 48 hours I won't be able to watch it so that's my money down the drain. We can't watch any of our streaming platforms... When will you fix this????

[eahicok]

This has now been over 2 days, what is the current update for the fix?

[RaviKS]

Already factory reset.Please provide instructions to reset chromecast

[ccouto]

Hello Google,

Any update about the massive outage caused by Google?

Thanks

ccouto

[Grahamfish]

Given that there are around 47,000 views on this post alone it seems fairly obvious that at least hundreds of thousands and almost certainly millions of people are affected by this fault worldwide. This has now lasted more than two days with only one brief comment acknowledging the issue from Google, then... nothing. Hey Google: if you want to keep any remaining credibility that any of your devices will keep working beyond a few months, so that users can have some degree of confidence in your products, you might want to provide some more updates beyond "yeah... we kind of know about it..."

[ccouto]

20million sold only in 2015 second generation

We cannot buy anything from Google anymore

[Michal3]

Thanks but I think most of us did this precise thing-factory restart 😂

[sisfenix]

@GoogleNestTeam Please, what is the expected correction date?

[saiyedasifali95]

Please Mail me whenever it gets fixed.

[ccouto]

Hi Google,

It is a good practice keep constant update when a massive outage is caused by a company, it is your image being damaged.

Do you believe that I would bought another product from you?

You have your time to fix the problem, but you must keep your million of damaged customers updated.

br

ccouto

[Redmundas]

What happens if I have already done a factory reset?

[Squa]

What are you doing with chromecast lately at Google? It got worse and worse over the past years and now you broke it completey! And at the same time the price for Youtube Premium is getting higher and higher. This is not working out! Please fix this issue and all others (e.g. need to disconnect and reconnect my phone to the wifi on order for the YT App to find my chromecast multiple times a day)! I'm about to cancle my YT Premium subscribtion, this is not worth the money anymore!

[monabri44]

Tuesday March 11th.  Still not resolved.  (UK).

[Flare]

I already factory reset my device...  Hope to hear back soon about a fix... 

[ccouto]

You can enter in our home and turn off our products but inform us when doing that, lots of people are wasting their time (and patience) fighting against something You created. Very low quality company. Invasive and silent. Like a criminal

[pravinbaba]

Any update on this?

[Silviavicenza]

Hello i have this problem and i reset the chromecast but still not work.  I need instruction to reset it

[ccouto]

do not do anything. It is a defect at google server, not in your chromecast

[AV1976]

"Do not factory reset......" Well, I hope there will be a solution for all 'factory reset' early adopters...

[doofygoof]

Factory resetted. Tried changing time but now I cannot even Connect to chromecast device. My phone cannot find the device. Am I done?

[ccouto]

it is a google issue, just wait

[WillIV]

Unfortunately we have to be patient to wait for a fix from Google. I'm not sure why it's taking them so long.

[Barbicardel]

Any update, please?

[Florencebettini]

2 chromecasts en rade ducoup j’ai acheté une box tv et j’ai réinitialisé un des 2 après j’ai 3 tv donc comme ça chacune aura le sien . Ça m’a quand-même bien pourri mon dimanche après-midi et ma soirée , je me serais bien passé de dépenser 58€ en ce moment ! 

J’attend donc les nouvelles et les instructions.