Hello @Hitesh Kumar
Welcome to Poly Community !!
The fix for this issue is to put the BT600 into pairing mode.
To do so, press and hold the little pinhole on the dongle until it starts to flash red/blue continuously. Put the headset into pairing mode and wait until the LED on the BT600 goes solid blue, and the OS should start to install the drivers.
If the issue still appears, contact our Technical Assistance Center.
Best Regards,
Mukesh Kumar
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