the controller does not connect to the pc

I turn on the Prime2, I put the source PC, it remains in a thinking loop but does not connect, while if I open VDJ it opens and works, what can it be? Intel i5 laptop ram 8gb win 10 latest release engine desktop 2.01 engine prime 1.41

Engine prime/Engine Dj is only for creating playlists and transferring tracks to USB.

It’s not a VDJ