After upgrading Windows 7 Pro to Windows 10 Pro 64-bit, the USB-Irda adapter doesn't work anymore. It seems the Windows 10 system has removed the “IrDA” application in Windows 10 Control Panel console (that is supported on Windows 8.1 system), and there is no USB to IrDA device that can work on Windows 10 system so far. Yep, Sport swatches manufactured by Polar use IR protocol for exercise data transfer between watch and PC app and the same for expensive Uwatec dive computers. Millions of customers using Polar and Uwatec products, I suppose. Hope Microsoft realizes the error of their ways and that a lot of us are going to be pissed that our expensive Polar watches (450 $ +) and Uwatec dive computers (2,000 $ +) no longer work. The workaround rolling back to W7 or installing a virtual machine is not acceptable.