How to fix "undefined external error" 40201 in Sibelius

1. Go to "Play" tab -> Setup -> Click "Audio Engine Options"
2. Go to "Audio Interface" pulldown option



3. Change Audio Interface


4. Restart Sibelius.

In my case, "Realtek ASIO (ASIO)" caused "undefined external error (40201)".
After Audio Interface was changed to "Realtek Digital Output (Realtek Audio) (WASAPI)",
there was no error.