For folks having issues due to loopMIDI, loopBE, etc not working in the current Windows MIDI Services release, we have a native in-box replacement in preview here:
Release App SDK and Tools Release Candidate 3 + Simple MIDI 1.0 Loopbacks ·…
Instructions This is for customers who have Windows MIDI Services enabled on their PC. If you are unsure, use the midicheckservice tool below. Be sure to download the correct version for your CPU…
We’re still working on the actual fix so that loopMIDI and similar will work, but that won’t be available until April/May at the earliest.
Pete
Microsoft