By the way, the lowest version that allows to run mediasoup out of the box is Windows 8 now. Not because of mediasoup code itself, but because libuv developers dropped support of Windows 7. They had formally done that some time ago, but recently they actually started to use a function from WinAPI that appeared only in Windows 8 (namely, GetHostNameW). So, in Windows 7, the workers will not start. It is still possible to patch the libuv sources in case someone want to run mediasoup in Windows 7.