Fix USB Bluetooth CSR 4.0 not working

Fix USB Bluetooth CSR 4.0 not working

In the search type" Device manager" and open it OR Windows + R  > devmgmt.msc

Click on the small arrow next to either "Bluetooth" or "Universal Serial Bus controllers". You can find in USB part

Right click on "CSR...." and select Update Driver

Select" Browse my computer for driver update"

Select on bottom "Let me pick from a list of available drivers on my Computer"

Select "Generic bluetooth Driver"

This will fix it and you will be able to use your Bluetooth now with no other problems.
fr:  Buckw12 - reddit.com