Designer Bluetooth Desktop Keyboard disconnects / no connection at startup

Hi all!


In mid October 2020 my Microsoft BT designer keyboard suddenly started to have massive connection issues: It is mostly not connected before windows login, so I cannot use it to log in. Further whenever I do not use the keyboard for a few minutes it disconnects and sometimes needs many keystrokes and ~ 10-20 seconds to reconnect. In rare cases I have to reconnect in the BT settings page.


What I find suspicious:

The drivers assigned to the bt keyboard are from 2006 is this normal?:

umpass.inf ver 10.0.19041.488 Bluetooth LE Device

The keyboard does not have a power management tab in device manager details.
Search for updates says the driver is up to date.


The keyboard worked fine until mid October. All other BT devices incl. the MD designer BT mouse are working perfectly. It is pretty obvious that it is an BT energy saving issue and it may be related to Windows updates in October.


This is what I already tried:

* unpaired and paired the keyboard

* inserted fresh batteries

* driver search in device manager

* uninstalled all bt devices in device manager

* checked energy saving settings / power plan

* tried some settings to bt in services.msc like mentioned in MS forums

* the vendor actually replaced the hardware

* reported in feedback hub

* opened a support ticket

I am using an HP Probook 440 G6 with integrated Intel Wireless Bluetooth.

Any ideas what to do?

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