I now have 2 separate reports that the Hardware Utility in 4.3.22 can’t reliably find controllers when using the refresh button, heartbeats not being sent, etc,  and that going back to 4.3.18 fixes the issue (this is one).  That does not make a lot of sense to me since all I touched was pixie testing between those 2 versions.  I didn’t touch anything with heartbeats. Can you please fire up 4.3.22 attach some LOR controllers (pixies, CTBs, whatever you have that responds to the HWU), and try