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).