I bought a Google Home Mini and set it up and worked like a charm for two or three days. However suddenly when I was calling 'Hey Google' it started saying that it can't connect to Wi-Fi. So I went through the standard Google Home connection issue trouble shoot process. Here are some of them.
- Check your wifi connection is working properly.
- Restart your wifi router.
- Forget the wifi connection from your phone and re-connect it.
- Reset the Google Home Mini ( by pressing and holding the reset button at the bottom )
- Remove Google Home Mini and adding the device again
- Uninstalling and installing the Google Home App
If none of them works, then there is one more simple thing to do ( which actually worked for me ). The issue was that my TP-Link router could not assign an IP address to Google Home Mini. Therefore I had to manually set it up. In Google Home App you can find the MAC address of the device. Then you can add it manually to DHCP table and save it.
This will fix your device's Setting Up connection issue.