Bridges the gap for older PC hardware to recognize modern wireless accessories.

The software is considered legacy at this point. While many users successfully install and run it on Windows 10 and 11, it is not officially supported by Microsoft or CSR. Windows may attempt to install a generic driver that often does not work correctly for CSR chips .

(Apt-X) USB dongles. It replaces or enhances the standard Windows Bluetooth stack to support advanced profiles like high-quality audio (A2DP)

Reboot your computer to ensure all drivers are properly loaded. Troubleshooting Installation

Give you if the automatic method fails Help you uninstall conflicting drivers

At its core, CSR Harmony 2.1.63.0 supports the full spectrum of Bluetooth capabilities including file transfer, audio streaming, device management, and hands-free calling. The software handles all essential Bluetooth functions by creating background controller services that run continuously to maintain device connectivity and responsiveness. The primary executable, CsrBtOBEXService.exe, manages OBEX file transfers, while CsrBtAudioService.exe oversees audio streaming operations.