To successfully run UBNT Discovery Tool v2.5.1 on Windows 10:
The primary reason this tool fails with "A Java Exception has occurred" is its incompatibility with newer Java 8 updates (specifically Update 281 and later). ubnt discovery tool v2.5.1 and java on windows 10
Remove any newer versions of Java (JDK 11+, or modern JRE 8 updates beyond 281) from your system. Install Legacy JRE: Download and install a legacy version like JRE 8 Update 271 from a reputable archive. Execute the JAR: Locate your ubnt-discovery-v2.5.1.jar To successfully run UBNT Discovery Tool v2
: Available for iOS and Android, these apps can often discover devices via Bluetooth or Wi-Fi on the same subnet. Execute the JAR: Locate your ubnt-discovery-v2
It often fails on modern JREs (Java 11+). Many users report success only with Java 8 Update 251 or older versions like JRE 7 .