Ubiquiti officially deprecated the Chrome extension version of the Discovery Tool due to changes in Google Chrome's application ecosystem. The standalone Java executable ( ubnt-discovery-v2.5.1.jar ) remains operational because it communicates directly with the network layer via User Datagram Protocol (UDP) broadcasts on port 10001. This bypasses browser-based security restrictions and handles multi-subnet environments efficiently. Prerequisites and Software Requirements
The first time you run the tool, Windows Defender Firewall will likely pop up asking for permission. You must allow access on (and Public if you are troubleshooting a direct connection).
@echo off "C:\Program Files (x86)\Java\jre1.8.0_311\bin\java.exe" -jar "C:\Path\To\Your\ubnt-discovery-v2.5.1.jar" pause Use code with caution.
Temporarily disable your firewall or create a new "Inbound Rule" to allow javaw.exe to communicate. 4. No Devices Discovered ubnt discovery tool v2.5.1 and java on windows 10
The UBNT Discovery Tool is a free utility developed by Ubiquiti Networks, Inc. to help users discover and configure their Ubiquiti devices, such as routers, switches, and access points, on a network. The tool uses various protocols, including UPnP, Bonjour, and SNMP, to detect devices and display their IP addresses, MAC addresses, and other relevant information.
is notoriously difficult due to strict Java compatibility issues Ubiquiti Community Compatibility Review: The Java Conflict
Given that the classic Discovery Tool is no longer officially maintained, it's important to know about Ubiquiti's modern alternative: . This application is a network analysis and discovery tool available for Windows, macOS, and Linux, providing all the discovery functionality without the need for Java at all. It's an excellent tool for both modern and legacy networks. However, note that it is considered a newer release and is still being actively developed. Prerequisites and Software Requirements The first time you
The Ubiquiti Discovery Tool v2.5.1 is a Java-based application, which means it requires the Java Runtime Environment (JRE) to run. The main issue is that , a version that is now outdated. Newer versions of Java (9 and above) have introduced fundamental changes to how modules and class paths work. As a result, attempting to run the tool on a modern Windows 10 system with a recent Java version (e.g., Java 11, 17, or 21) will frequently lead to an error.
Press . The tool will bypass standard OS restrictions and open successfully. Creating a Permanent Desktop Shortcut
If you are using a Chromium-based browser, the browser-based discovery tool is a lightweight and highly convenient option that doesn't require a Java installation. Temporarily disable your firewall or create a new
Once you have Java installed, you can download the Ubnt Discovery Tool v2.5.1 from the Ubiquiti website:
Under System variables , locate the variable and click Edit .