I found the solution here
https://forum.modartt.com/viewtopic.php?id=4720

"...setting 'Active MIDI inputs' to 'Listen to all MIDI inputs"

I watch some of the introductory tutorials by Hugh Sung, and this wasn't mentioned.

Please you got it sorted,

Warmest regards,

Chris

"...setting 'Active MIDI inputs' to 'Listen to all MIDI inputs"

I watch some of the introductory tutorials by Hugh Sung, and this wasn't mentioned.

I have just discovered Pianoteq, hoping to use it with my current P-125 instead of having to upgrade my physical keyboard. I like the P-125's combination of 88 keys, reasonable keybed and most importantly, low weight.

I am trying to get the trial version of Pianoteq to work with my Windows 10 PC. I have installed the Steinberg/ASIO driver.

The communication from PC to keyboard seems to work. I am able to select various instruments on the Pianoteq interface and they playback perfectly on the keyboard's internal speakers using Pianoteq's virtual keyboard.

However, I can't get the inverse to work. When I play notes on the keyboard, I hear the sounds locally generated by the keyboard on its speakers, but I hear nothing on the PC's speakers and the selected instrument on Pianoteq does not sound on the keyboard's speaker. I don't know if the sounds should be audible on  the PC's speakers.

I then found this post here on the forum, and disabled the keyboard's Local Control using the METRONOME-RHYTHM-C5 combination
https://forum.modartt.com/viewtopic.php?id=9026
When I disable the locally-generated sounds, I hear nothing on neither the PC's or keyboard's speakers.

I've checked the keyboard's manual, and I don't know if I need to adjust anything on the keyboard. I've checked the MIDI settings on the Pianoteq side, and I don't know if I need to adjust anything there.

Can anyone help?

Many thanks.