: This is often a driver recognition problem. A proven user fix is to go into Device Manager , find "Pioneer DDJ-S1" under "Audio Devices", and manually change its driver to "USB Audio Device" through its properties. This can sometimes force a proper connection.
But there is a massive problem:
You can usually install the driver normally, though you must grant permission in system settings: Run the installer package. If blocked, go to . pioneer ddj s1 driver new