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.

[GiacomoMilazzo]

I've just did on one of my 2 CC that yesterday I've reset. I've completed the setup and also if it's still not casting by app at least it's on Internet hoping to receive some patch by Google.
Thanks

[racc33]

Hahahaha

What they do!!!

I AM in the same situation 

[Alexandra1987]

Same issue

[Mark38]

Same here,  not able to stream,  factory reset... and got authentication error

[Bas3]

Like you wrote, it seems like a certificate problem, which passes today. Happy I am not alone with this, but I am afraid, we will have to buy a newer version of the chromecast, which would be rediculous

[ElizaPanzer]

They don't sell them anymore.  You have to buy a google tv. This sucks! I only have one gen 2. The gen3 still works. 

[YVAnichyy]

How do I know what gen I have lol

[Lmmm]

Considering the new streamer option is about $180.00 N.Z and we have three t.v's that need one.... we won't be doing that.  Thank goodness we have a smart t.v in the lounge, plus P.C I can use in the bedroom 😒

[Lctreder]

Also had this issue, where we had no problems this morning and then tried again this afternoon to no avail. Error message said it may be a firmware issue, tried a reset, and now Google Home says it can't authenticate the chromecast

[Putzbell]

Same here. Saying outdated firmware 

[frtm]

Any workaround?

[Lmmm]

Wait and pray...🤦

[Bas3]

I am afraid no workaround, untill Google updates the firmware with a valid certificate.. Which can take months, íf they update it. Probably they want us to buy a new, more expensive one 😞

Please post, if someone finds a workaround! 

[ElizaPanzer]

They dont sell chromecast anymore. Got to buy the expensive google tv instead.

[Kiranp]

Same here. Probably Google wanted us to buy a new one...

[tommyemoss1980]

No just gum tree employment staff

[Tookie]

I’m having the same problem. I restarted the chromecast, my router, updated the app, etc. and now it won’t connect at all. So frustrating! I just have the one but is the only way to watch stuff. Maybe I will just be buying an HDMI chord. How silly. 

[Juliazedi]

Just got the same problem as well. Tried calling them 3 times and keep getting hang up on… if it’s happening for a lot of people at once, something must be wrong with our casting devices from googles side. An issue they must fix!

[ChristianS13]

I have the same issue. It worked in the morning and now it’s not working anymore 😞

[csiha28]

Same here... 

[AleHamster]

Same issue! T_T

Everything was fine yesterday 

[Olandino]

Anche a me ora... come si risolve? 

[sebaspp]

Same issue here with my chromecast in the latest version. Weirdly the youtube app installed in the tv (samsung) won't open either, not surenif related

[Яісн]

Hola, entonces el problema no es solo en los de 2da y 3ra generacion, el tuyo q es de la ultima generacion de chromecast tambien tiene problemas?

[BadFlash]

It probably is related if it's using the SSL certificate of your CC device ... until the certificate is signed with a valid CA, it will work back again (probably).

[Sue38]

Not daylight savings. A Gen 2 issue in New Zealand too.

[Lsr123]

This is what happened to mine too. Have tried everything.

[Jayneslilgirl]

I did same. Thought it was the one room chromecast so removed and now cant re-add. Checked all other rooms. Says on app all offline so can't cast anywhere in house

[BadFlash]

You can re-add it if you change your date/time on your phone to March 7th 2025 and then restart the Google Home App... you won't be able to cast but at least it will be on the network.

[Ian23]

Exacto no sé puede transmitir 

[Ian23]

Pensé que era el único entonces no es mi wifi 

[Sulu]

Nope, nothing to do with daylight savings switch. New Zealand here, and this issue just happened to us. Our daylight savings isn't due to switch for a few weeks.

[Toyou]

I blame StarLink

[MrNobody69]

For the one that wont let you re add it, set the date on your phone back 1 day in the past. It will add. This seems to be an expired certificaye issue. Once added it will still not work for casting until google resolves issue on their end.

[Yogesh106]

Already factory reset,please provide solution how to connect

[PayURtax-g_ogle]

You posted this on Monday. Today is Thursday. You have an army of Devs. Stop stalling already and fix this. 

[Mirage267]

Please fix the problem asap. 

[JeannieSteve]

Why is it that the Google Chromecast is saying not to reset it to factory settings. And how long will it be before this issue is dealt with!! 
if it’s not working please let us know, or tell us how to fix it!

This is so wrong on so many levels, what has happened to helping your community? 

jeannie Williams 

[danhluu]

Updates 

[CookieHappyCat]

See my post, Fix Chromecast Issue, it works properly @CookieHappyCat 

https://www.googlenestcommunity.com/t5/Home-Automation/Fix-Chromecast-authentication-issues-Fix-cast...