**Common Windows Error Fixes: Bluetooth CSR 4.0 USB Dongle Adapter Not Working** This video provides common solutions to resolve issues with Bluetooth CSR 4.0 USB dongle adapters not working on Windows devices. **The Problem:** Bluetooth doesn't work after a recent update or installation of the device driver. **Solution:** 1. Go to **Device Manager**: * Right-click on the Start Menu and choose Device Manager. * Alternatively, search for "Device Manager" in the search bar. 2. When you connect the device, the driver gets installed automatically. If not, uninstall the Bluetooth driver that comes with the device. 3. On your dongle (and mine), the dongle boots in HID mode by default (VID 0A12 PID 100B). ![]() **About the CSR8510 A10 Chip:** The CSR8510 A10 chip is a dual-mode chip and a Bluetooth V4.0 single-chip radio and baseband IC for PCs and consumer electronics devices. **My Experience:** Until two days ago, my Microsoft 3600 Bluetooth mouse worked well with a CSR8510 A10 USB Bluetooth 4 dongle and the MS Generic Bluetooth driver. **Download CSR Bluetooth 4.0 Driver:** ![]() You can download the CSR Bluetooth 4.0 driver from [link] or use the Broadcom Bluetooth Driver and Application v6.zip file. ![]() Note: The result is in English and UTF-8 encoding.
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