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.

[ErlanAlan]

Same problem

Firmware 275994

Cast Firmware 1.56.275994

[AleVega]

I'm in Colombia and I'm using a chromecast gen 2. I reset it like I read on Internet but now I havent been able to set it up again

[HughMungy]

Yep, it still says "cannot authenticate". Second generation model. Has worked for years. Suddenly doesn't, and this post has the most interaction anywhere on this community site.

[Reidcc]

Same issue here. Google seems to have pulled the plug on our CHROMECAST devices of all models and firmware. 
System firmware version: 275994
Cast firmware: 1.56.275994
Language: en-US
MAC address: 7C:2E:BD:4B:1C:E5
IP address: 192.168.2.121

[MugiwaraJF86]

Doesn't work

[BK9]

Have done so and still same problem

[WillIV]

I tried this and it doesn't work. I'm having the same issue. After resetting the device and going through initial set up again is when the error message comes up that device can not be authenticated.

[Squintdrummer]

Performed a factory reset and setup. Google Home could find the Chromecast, but could not authenticate.

[Lizzyd121]

Did all the usual resetting. No change.

[Adav]

After factory resetting on a 2nd gen device the chromecast no longer communicates with Google Home and pops an error.

[DaisySA]

Factory reset did nothing. One it gets to the page where the chrome cast is giving a code, the time app cries about authentication

[bumbJiggyK]

Have factory reset, reset router, hard rebooted phone, all to no avail, it is totally the Chromecast issue, no other device in nest has strange 'firmware' note, <i> that is needs to be on same WiFi (it is) has latest end of Feb firmware update, also of not-do not have permission for Chromecast (only me on account/admin/says I have preview program, but I do not-well, should not) but clearly is it dimmed out-and I do not have permissions as if it has been taken over. All checks done, redone-location/local network/resets/reboots/clear/unistall/reinstall Home/all to no change, and only with the Chromecast device. It even SAYS I'm connected to the WiFi, but not the SAME WiFi (but all other devices are, and I have only one WiFi connected-cannot see anything else from anywhere. 

[benleeburke]

Same here. North Carolina, USA. Gen2 chromecast

[MoMinck]

Have already done a factory' reset and am still getting code f6x8, not sure what model my Chromecast is but it's at least 6 years old. Also getting 'unable to authenticate Chromecast' also started about 12 hours ago today.

[Dan37]

It will not authenticate to add the device to Google home after factory reset. 

[Urbnbrzln]

Having same issue, Gen 2 Chromecast reset to factory settings, unsure of firmware version since I can't reconnect to it 

[Rishi17]

Now working even after reset

region Asia can't check version

[Dozo]

Restart or even resetting doesn't work.

After resetting the device (gen 2), device won't authenticate.

[Anders_Sweden]

This problem absolut affects the Chrocast Audio.

I have one HDMI-Chromecast and two audio that are affected.

[Airlala]

Did all that and it’s still not working

[malmattos]

tentei isso e agora o chromecast não autentica

[mskelsey]

Factory reset failed with authentication failure. Could be expired certificate? Hopefully good can still upgrade the cert if so. Pity no info from Google.

[trob1]

I believe we've all tried the factory reset multiple times. I don't know my firmware version (how can i check this?), I am in Germany.

[SebinParis]

Same here. I am in France, using a chromecast Gen 2.

Google Home will find my device without issue when I click on "add a device"

And I made factory reset and it works

But then when I sy yes to "set up Chromecast0613", it says "impossible to authentify, get on support.chromecast.com/chromecast ...

[ElinR]

Any timeline on when this will be resolved?

[LadywithSauce]

I tried to factory reset and it's still messed up. Clearly, if this many people are having issues it's something in your code. Fix it or I'll never rely on Chromecast again. What a mess. 

[MumTheMightyGod]

Exactly same . I have Chromecast from 2017 ,stopped working yesterday . Firmware not recognised message appeared . Factory reset and now can't communicate with device message . Have reset my Android and router ...   Am in England , U.K. 

Thank you 

[eighty666]

can't do that it's not in the home app any more

[Kris_1992]

I tried this already and I get a new error saying: 

'We couldn't authenticate your Chromecast. Please visit support.google.com/chromecast for help troubleshooting this issue.'

[DaleN]

If you HAVE done a factory reset (Google now says, DON'T!) this workaround will at least get your Chromecast back on the internet.

A factory reset renders the device essentially invisible. To get around this I manually changed the date on my device to March 1. I could see the device to connect it to wifi (👍) but the add device portion failed 😕.

The default gallery shows on the tv (correct date, time, local weather) but the device is invisible to the Home App.

[Cksm23]

Hi Jill, any updates on this issue pls? Thx for your help.. 

[Mohamed_1976_TN]

Impossible to do it using Google home and impossible to do it manually 

[Radagast]

I did ALL of that.

Reset WiFi.

Change modem to factory settings.

Change Chromecast to factory settings.

Reinstall the Home app.

Try it on different TV sets.

Restart everything, once and again.

Nothing of all these worked.

The connection starts and the cellphone is recognized at the beginning, then it stops at the moment when the code appears on the screen and I get the "not recognized" message on the cellphone.

That happens in TWO Chromecast devices, there's a third one that's still working OK.

[Prolificrecords]

How to fix the trust  chrome cast firmware  issue  my kid uses  this

[juarezjaques]

Hi @JillG  I had same problem.

Region: Brazil

Model: NC2-6A5

I can see firmware version anymore, because I made factory reset to configure again.

[AlexSanfi]

Second generation, Spain 

[matthieubrucher]

System firmware 275994

Cast firmware 1.56.275994

I don't remember the device I used, it's a ChromeCast, probably early generation (grey). UK.

[matthieubrucher]

Even worse with a factory reset. Now even VLC won't be able to use it!

Unable to authenticate. looks like a certificate that expired, really not OK!

[Kiranp]

I am getting this message while setting up "Unable to communicate with the chromecast"

[Airlala]

Same here