UE4.23 Preview - Hololens2 Emulator

Debugging is available too. Do all steps from my previous answer but don’t start the app.

However open MSVS, then go to Debug/Other Debug Targets/Debug Install App Package/Remote Computer/Manual connection.

Switch to Device Portal and take IP address of the running emulator. Assign in MSVS

Address -> IP of the emulator
Authentification -> Universal

then Start in MSVS. You would need to add a path to your symbols too.