Obtain the .exe or .jar version from Ubiquiti’s legacy download archive.
: Download Java 8 (32-bit/x86) . Even if you run a 64-bit Windows 10 system, the legacy discovery tool functions most reliably with the 32-bit Java architecture. ⚙️ Step 2: Install and Configure Java 8 on Windows 10
is notoriously difficult due to strict Java compatibility issues Ubiquiti Community Compatibility Review: The Java Conflict
This is the safest and most reliable method, as it leaves your system's main Java installation untouched. It uses the launcher.bat file to force the tool to launch with a local copy of Java 8.
Here is everything you need to know to get the tool up and running. ubnt discovery tool v2.5.1 and java on windows 10
Installing Ubiquiti Discovery Tool on new Windows 10 Pro laptop
Navigate to the folder where your UBNT discovery tool is saved using the cd command: cd C:\Users\YourUsername\Downloads Use code with caution. Launch the jar file directly using Java: java -jar Ubiquiti-Discovery-App-v2.5.1.jar Use code with caution. Method B: Creating a Desktop Batch Script
or earlier. Versions after Update 281 frequently break the tool. Installation Steps: newer Java versions from your Windows 10 machine. Download and install Java 8 Update 251 (or an equivalent older version like JRE 7). Run via Batch File: Instead of double-clicking the file, run the ubnt-discovery.bat
What do you see in the Command Prompt when launching the file? Obtain the
For more information on the UBNT Discovery Tool v2.5.1, Java, and Windows 10, refer to the following resources:
To install the tool itself, the process remains straightforward. You'll need to download the ubnt-discovery.zip archive from Ubiquiti's official download center for utilities. After extracting the archive, you will find the main application file ( UBNT_Discovery_Tool.exe ) and several supporting files.
The Discovery Tool functions by broadcasting Layer 2 packets to discover devices.
The is still an effective, lightweight tool for managing Ubiquiti equipment, even in 2026. While Java dependencies can be finicky on modern Windows 10, following the steps above—specifically ensuring Java 8 is installed and using Command Prompt to verify execution—will help you locate your devices quickly. If you have specific issues, feel free to Share public link ⚙️ Step 2: Install and Configure Java 8
If you want, I can:
: Ensure Windows Firewall is disabled or an exception is made for the Java binary to allow it to listen for broadcast frames . Modern Alternatives
If you cannot run Java 8 on Windows 10:
Ubiquiti’s contemporary, sleek local discovery tool that automatically scans subnet networks for any UniFi or third-party hardware without requiring Java.