Older Releases. Older releases are no longer actively maintained, and no help or support for these versions will be provided. These systems should be upgrade to 3.0 as soon as possible. Older releases are available here. Does anyone know of a free radius server for windows 10? winRadius needs registration and tekradius looks like it requires msSQL. Thank you. [SOLVED] free Radius server for Windows. WinRadius is a standard RADIUS server for network authentication, accounting. It's easy to use, and can be used for telecommunication accounting platform, PPP authentication, accounting server.