Not sure how to get this out there… but this forum had the top result for people trying to figure out how to get the Logitech MX Keys Media Keys to function in Windows 10. I figured out the workaround and wanted to document it here.
Edit this file: C:\ProgramData\Logishrd\LogiOptions\Devices\6b35b\6b35b.xml
There’s a section like the following:
<controlid id="0xe4" reprogrammable="1" taskidlist="previousTrackTaskIdlist" type="fkey" fpos="8" rawxy="0">
<task class="media" id="0x06">
<params command="previous" />
</task>
</controlid>
<controlid id="0xe5" reprogrammable="1" taskidlist="playpauseTrackTaskIdlist" type="fkey" fpos="9" rawxy="0">
<task class="media" id="0x04">
<params command="play_pause" />
</task>
</controlid>
<controlid id="0xe6" reprogrammable="1" taskidlist="nextTrackTaskIdlist" type="fkey" fpos="10" rawxy="0">
<task class="media" id="0x05">
<params command="next" />
</task>
</controlid>
This needs to be modified as follows:
<controlid id="0xe4" generic="1" reprogrammable="0" type="hotkey" rawxy="0">
<task class="donothing" id="0xFFFF">
<params />
</task>
</controlid>
<controlid id="0xe5" generic="1" reprogrammable="0" type="hotkey" rawxy="0">
<task class="donothing" id="0xFFFF">
<params />
</task>
</controlid>
<controlid id="0xe6" generic="1" reprogrammable="0" type="hotkey" rawxy="0">
<task class="donothing" id="0xFFFF">
<params />
</task>
</controlid>
Then kill any processes related to Logitech Options and re-launch the application. Problem solved!