The Ubiquiti Discovery Tool v2.5.1 relies on standard Java network broadcasting. Modern security protocols in Windows 10 and recent versions of Java block these legacy functions by default. Common symptoms of failure include: The application closes immediately after opening. A "Java Virtual Machine Launcher Error" appears.
start javaw -jar ubnt-discovery-v2.5.1.jar
Even after applying a fix, you might run into additional obstacles. Here’s a quick troubleshooting guide:
Troubleshooting: UBNT Discovery Tool v2.5.1 and Modern Windows Issues
Right-click the installer → . This is critical for the tool to access raw network sockets for Layer 2 discovery.
Many users report that newer Java 8 updates (specifically Update 281 and later) cause a "Java Exception" error. Installing an older version like JRE 8 Update 251 JRE 8 Update 271 typically restores functionality. Use OpenJDK: Alternatively, using Amazon Corretto 8
If you prefer not to maintain an outdated, insecure 32-bit Java environment on a production Windows 10 machine, several modern alternatives can locate your Ubiquiti hardware:
The Ubiquiti Discovery Tool v2.5.1 relies on standard Java network broadcasting. Modern security protocols in Windows 10 and recent versions of Java block these legacy functions by default. Common symptoms of failure include: The application closes immediately after opening. A "Java Virtual Machine Launcher Error" appears.
start javaw -jar ubnt-discovery-v2.5.1.jar
Even after applying a fix, you might run into additional obstacles. Here’s a quick troubleshooting guide:
Troubleshooting: UBNT Discovery Tool v2.5.1 and Modern Windows Issues
Right-click the installer → . This is critical for the tool to access raw network sockets for Layer 2 discovery.
Many users report that newer Java 8 updates (specifically Update 281 and later) cause a "Java Exception" error. Installing an older version like JRE 8 Update 251 JRE 8 Update 271 typically restores functionality. Use OpenJDK: Alternatively, using Amazon Corretto 8
If you prefer not to maintain an outdated, insecure 32-bit Java environment on a production Windows 10 machine, several modern alternatives can locate your Ubiquiti hardware:
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