See here:
UTM Up2Date 9.209 Released | Sophos Blog
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Does firefox or IE also showing an error message?
Yes, on Firefox it shows "The connection was reset". I tried to telnet to the UTM machine on port 4444 it open though. Anyone face the same issue? Its weird because this is a fresh install and i also redownload the ISO twice with the same result.
I also tried on Virtualbox and VMware.
Are you trying to connect via FQDN?
What happend if you use the IP instead the FQDN?
You could try this
Are you trying to connect via FQDN?
What happend if you use the IP instead the FQDN?
You could try this