Cannot access Home Assistant web UI (8123) from VM or HAOS bare metal – ping works but HTTP fails

Hi,

I’m trying to run Home Assistant on old hardware and I’m stuck with a network access issue despite many tests.

Here is my setup and what I already tried.


Machine 1 – ASUS i5 (Windows host + VirtualBox)

Windows host

VirtualBox VM

Linux 2.6 VM

Home Assistant OS running inside the VM

Home Assistant boots correctly:

HA core = running

I get an IP address

ping works

but I cannot access http://IP:8123 from any device or browser (timeout)

I tested:

Bridge (Wi-Fi)

Bridge (Ethernet)

NAT + port forwarding

Windows firewall disabled

router ports open

Nothing works.

Also, HA shows a Docker/internal IP (172.x.x.x) and it looks like containers are not properly exposed to the LAN.

Ping works, but HTTP never responds.


Machine 2 – Sony VAIO (old laptop)

Installed Ubuntu 18.04 → works

Tried installing HAOS directly on disk (bare metal)

HAOS either doesn’t boot or is extremely slow

I suspect the hardware is too weak for HAOS


My question

Is this expected behavior?

Is HAOS too heavy for old laptops?

Is VirtualBox + Wi-Fi bridge known to block port 8123?

Should I instead install Home Assistant Supervised (Docker) directly on Ubuntu rather than HAOS?

If someone successfully runs HA on similar old hardware, what setup would you recommend?

Thanks a lot!