Why is the Bluetooth device not displayed in Windows 11?

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Why is the Bluetooth device not displayed in Windows 11?

Error description

A Bluetooth device is to be paired, but this is not displayed in Windows 11. The device is not paired in the device manager.

Cause of error

In newer versions of Windows 11, a setting has been added for Bluetooth which ensures that some Bluetooth devices are not displayed.

Troubleshooting

To pair MobilData BT (not Radix!) or MultiSens, the following must be done in Windows under Settings -> Bluetooth and devices can be scrolled down. At the bottom of the settings page, select "Bluetooth device detection" the value on Extended be set.

The device should then be displayed when pairing.