Hello.
Under Windows 10 technical preview build 10061, our MIDI implementations
based both on portcls and AVStream suddenly stopped working, in that they
did not appear in the list of MIDI devices on the system. Indeed, WPP
traces indicated that the filters in question were simply not being
opened. That convinced me that it was a matter of stricter topology
requirements. So based on this, I tried to make sure that everything in
our topologies was as close as that of MS, whose devices of course still
functioned. Unfortunately, I was not close enough, and our implementations
started to work again under build 10074. I think that all that I had
missed in my earlier attempts were the friendly names of the pin factories,
and I cannot easily revert builds to test. Can someone at MS (or anyone
who knows this information) please confirm if that is indeed the case, or
if not, what were the changes from 10061 to 10074 for MIDI?
Thank you.
Basil
