Just flashed an sd card with hassos_rpi3-5.10.img.xz using balenaetcher. Inserted the card into my Rpi, connected my RPi to a monitor and ethernet and watched it bootup HA. Saw it update over the internet and got to the following prompt:
Welcome to Home Assistant
homeassistant login:
Found the RPi’s IP address on my router’s webpage and can ping it just fine.
Tried every suggestion on the Home Assistant Website regarding accessing the Home Assistant GUI using my Windows computer (see the list below) and always get the same response: “This site can’t be reached 192.168.1.104 refused to connect.”
With what you’ve described, That should technically be working. Does your system have a firewall active or anything else between you and the RPi that could potentially be blocking communication over port 8123?
I have not implemented any firewall feature on my router (Linksys EA 7300). I am using Windows 10 computers to try and login. I can login to other devices on my network such as an Accurite weather sensor hub and use their GUI.
Hmm, From reading around it seems that quite a few times users advise that their SD Card is corrupted when they see an error along these lines. Have you tried re-imaging your SD Card yet to see if you get any different results (On-Screen and over network)?