If you are determined to use the RT3290 on Windows 11, try these methods to force the driver to work: Use Windows 10 Legacy Drivers Download the Windows 10 driver (e.g., sp71572.exe ) and install it using Compatibility Mode for Windows 8 or 7. Disable Driver Signature Enforcement
: A cheap and modern solution that provides better stability and newer Bluetooth versions (5.0+). Replacement Card Ralink Rt3290 Bluetooth Driver Windows 11