Which update, specifically? If it’s the January 2026 Preview update, you may want to wait if you are using any virtual MIDI ports.
Among other things, that includes the bits for a phased rollout of the new MIDI stack. If the feature is enabled on your PC, and if you use loopMIDI or other virtual MIDI ports, there’s a timing issue in there that requires you to jump through a couple hoops for them to work.
Info here:
Pete
Microsoft