Some users have found success using specific manufacturer drivers if the generic ones fail: Realtek Bluetooth UART Bus Driver

If the device shows up as "Unknown Device" or "Generic Bluetooth Adapter": Device Manager and select it). Find your device under Other devices Right-click it and select Update driver Search automatically for drivers Microsoft Support 3. Common Chipset Drivers Many 75270-listed adapters use a CSR (Cambridge Silicon Radio)

This usually means the Hands-Free Telephony (HFP) driver is interfering. Disable it:

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