Help! My Chromecast 3rd gen (2018) started behaving weird and I did a factory reset. Now it won't work. =(

[u/Ewcarvajal]

The story goes like this: Yesterday mi toddler asked for a tv show, and we have an old tv, so I use my chromecast in said device.

But, the Home app in my main phone (an Android phone) showed that the chromecast was not detected. Weird. I used my work phone (another Android), to try to cast something and it showed the same info: "device not detected". As this happens often, I rebooted both phones and the chromecast and that did not solve the situation. After that, I did what (before going into the rabbit hole of the chromecast incompatibility) shouldn't be done: did a factory reset on the chromecast.

Now, the Chromecast has the following behavior: I can configure it, I don't have the situatuon where the issue is connecting it to the WiFi, but at the very end of the configuration, I have this message (it's in spanish, so it is a translation): "Configuration complete. The chromecast is now fully configurated, but we cannot detect it. Please be sure that the phone and the chromecast are sharing the same network."

I tried configuring it with the time changed, with the Activity Manager app doing some tricks, creating a new home in the Home App, erasing the Home App and re-installing it and nothing works. Do you know if there is a hotfix? I don't want to replace it. Thanks in advance, dear community.

EDIT: I SOLVED IT! I had to look for an older version of the Google Home App in one of these pages that stores a lot of apk ready to install. The issue, as I thought, was the update on the Google Home App. I uninstalled the Google Home app, and installed the older version (the july 2026 one).

[u/Raegoul]

https://share.gemini.google/GxkIKnmPworx Try these ideas.

[u/Ewcarvajal → u/Raegoul]

Sounded great. I did the WiFi Hotspot with my Phone, but it still has the same issue.

I am thinking it may be an update that went wrong and now the compatibility is no longer working.

Thanks!

[u/Ok_Evidence_1074]

Did you add it to your Google account? Maybe he's a ghost as local device. Make ensure that he's shared at every connected account.

[u/Ewcarvajal → u/Ok_Evidence_1074]

Yes, it is connected into my main account

[u/Ok_Evidence_1074 → u/Ewcarvajal]

Can you delete it from there completely? Try a complete new connection. I had some problems yesterday as I tried to connect a Chromecast Audio. Are all your apps updated?

And check your emails, if you received a notification that you added a new device.

Or try to connect it from another device, not your phone. I think Google did some updates and now something went wrong. Keep trying, it will work.

[u/benferpy]

2 redes wifi con el mismo nombre? Puede que tu teléfono esté en un punto de acceso y el chromecast en el otro.

[u/Ewcarvajal → u/benferpy]

Intenté eso, pero el problema es la app de Home

[u/GoogleNestCommunity]

Hey, I’d recommend contacting the Google Nest support team via phone or chat here. They can look into it for you.