After installing updates KB5077241 and KB5077181, the virtual MIDI ports from loopMidi and rtpMidi were no longer recognised on my computer either.
I then performed the workaround by restarting the Windows MIDI service. The virtual MIDI ports from loopMidi and rtpMidi worked again, but the Fireface - ARC USB connection (even after switching the FF 802 or ARC USB off and on again) no longer worked. I tried various things, including rebooting and switching the devices off and on again, but nothing worked. So I had no choice but to uninstall the two Windows updates and hope that a bug fix will be available soon. The new virtual Windows MIDI ports could replace loopMidi for me, but not rtpMidi.
Regards, Detlev
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