v2.5.1 can crash with java.lang.OutOfMemoryError on modern systems with 16GB+ RAM due to an erroneous memory allocation call.
If you prefer an officially supported solution, Ubiquiti has introduced as the modern replacement for the legacy Discovery Tool. WiFiman requires no Java installation and runs natively on Windows 10, macOS, and Linux.
Click and paste the path to your Java installation bin directory (e.g., C:\Program Files\Java\jre1.8.0_xxx\bin ). Click OK to save and exit. 3. Launch via Command Prompt (Recommended)
Add one more JVM flag to your batch script: -XX:+UseParallelGC ubnt discovery tool v251 and java on windows 10 updated
If you've recently updated Windows 10 and found your trusted Ubiquiti Discovery Tool v2.5.1
Uninstall current Java. Reinstall Zulu 11 with FX or Liberica Full JDK 11 . The Full version includes javafx.swing and javafx.controls .
If simply double-clicking the file does not work, it is likely due to file association issues with Java 8. Run it from the command line: Open (cmd) or PowerShell . Click and paste the path to your Java
The compatibility issues stem from two primary technical shifts:
To get the legacy Java tool running on an updated Windows 10 system, you must meet specific software conditions: Java Version : The tool is most stable on Java 8 Update 251 Version Mismatch
The Discovery Tool uses and UDP port 10001 . Windows 10’s firewall, especially after the “2023-11 Cumulative Update,” aggressively blocks raw socket access for non-signed Java apps. Launch via Command Prompt (Recommended) Add one more
apps are often more reliable for quick discovery if you have WiFi or Bluetooth access to the network. Summary Table: Quick Compatibility Reference Best Known Working Java UBNT Discovery v2.5.1 Deprecated Java 8 (Build 271 or older) Windows 10 (Updated) Requires Firewall exceptions Chrome Extension N/A (Runs in browser) ubnt discovery doesnt work on win10
If you do not want to deal with Java installations on a modern Windows 10 machine, Ubiquiti has moved away from the standalone JAR file.
However, users trying to run the legacy on Windows 10 often hit a wall. The application frequently fails to launch, opens and closes immediately, or displays confusing Java errors.