Microsoft keyboard (Bluetooth), ID is not displayed?

Cl
4

I bought a new keyboard from Microsoft. This can be easily connected to my smartphone, but not to my laptop (Windows 10).

The keyboard expects a 6-digit ID to be entered, but the laptop does not display it to me as soon as I press pair.

The drivers are all up to date and the PC / keyboard has been restarted several times.

What could that be?

oy

Bluetooth?
Driver and software (app) updated on the laptop?

Cl

Yes Bluetooth, drivers are up to date.

oy

Bluetooth icon is displayed in the system tray?

Cl

I found the solution. A standard password was stored, it was "000000". There was no mention of this in any sentence in the manual. I had tried "0000" intuitively, but no one could calculate with the six zeros.