The most stable and widely recommended version remains . It offers a perfect balance between legacy hardware support and modern operating system compatibility.

https://dl.ui.com/discovery_tool/v2.5.1/UBNT-Discovery-Tool-2.5.1-Windows-x64.exe

Introduction: What is the UBNT Discovery Tool? For network engineers, system integrators, and prosumers who manage Ubiquiti networks, the UBNT Discovery Tool is an essential utility. Unlike a standard web browser that relies on mDNS or UPnP, this proprietary Layer 2 tool finds Ubiquiti devices (airMAX, UniFi, EdgeMax, and legacy M-series) even when they have conflicting IP addresses or are on a different subnet.