SITL Flightaxis Won't Connect

Just did a couple updates and a fresh install of Windows 10 on my workstation.

Now I cannot connect to Mavlink- it just times out with no heartbeats.

I’ve tried v1.3.77, ‘latest’, and beta Mission Planner; using ‘Latest’ and ‘Stable’ Plane, along with (or without) a wipe.

Confirmed that Mission Planner is allowed through the firewall.

What else am I missing?