Smart Firewall stops Hyper-V Default Switch from working
Norton Security appears to be blocking guest VMs from getting a DHCP address / connecting to the internet when using the Hyper-V default switch (Windows 10 1809 and 1903 running on the host machines). If I disable Smart Firewall everything is okay and VMs behave correctly, however if Smart Firewall is enabled, machines do not get a DHCP address and instead fall back to a 169.254 (internal) address.
I have tried adding the guest MAC address to the device trust list as suggested in a couple of posts in this forum, however this does not appear to work, the only solution appears to be to completely disable the Smart Firewall.
Has anyone else experienced this / have a solution.
Thanks in advance.