The term bynet is not a standard Microsoft executable. Instead, it likely refers to:
Before Windows 2000/XP integrated robust TCP/IP stacks and plug-and-play networking, configuring a PC to join a network was a manual, error-prone process. Tools like winconfig.exe filled the gap, especially for: bynet winconfig exe upd
In those environments, winconfig.exe was often one of several utilities. If a custom script or launcher (maybe called bynet.bat or bynet.exe) was written to automate network setup, it might call winconfig.exe to apply new settings, followed by a upd command to refresh the registry or reboot the network stack. The term bynet is not a standard Microsoft executable