That's worked to me, thanks (I do not solve It) for this solution:
Hi everyone, If you factory reset your Chromecast (2nd Gen or Chromecast Audio) and now you can’t set it up because it shows the message “Connection problem”, here’s a solution that worked for me: ✅ Steps to fix the issue 1️⃣ Change your phone’s date to March 6, 2025 (or a day before the issue started). 2️⃣ Open the Google Home app and try setting up your Chromecast as a new device. 3️⃣ Once the Chromecast connects, it will automatically download Google’s update. 4️⃣ After the update is complete, set your phone’s date back to the current day. 🔹 That’s it! Your Chromecast should now work correctly. 💡 Note: This solution may work because changing the date prevents the device from detecting the expired certificate, allowing it to connect to Google’s servers and update.
