Once you have the tool working on your updated Windows 10 machine, keep these tips in mind:
Do not trust random third-party sites. While Ubiquiti’s official downloads page now prioritizes v3.x, you can still find v2.5.1 via community archives or Ubiquiti’s legacy repository. The legitimate filename is: ubnt discovery tool v251 and java on windows 10 updated
Installing Ubiquiti Discovery Tool on new Windows 10 Pro laptop Once you have the tool working on your
| Issue | Solution | |-------|----------| | "Failed to create Java Virtual Machine" | Increase virtual memory. Go to System Properties > Advanced > Performance > Advanced > Virtual memory → Set to "System managed". | | Tool opens then immediately closes | Run from Command Prompt as Admin: "C:\Program Files\Ubiquiti\UBNT Discovery Tool\discovery-tool.exe" and look for Java errors. | | No devices found (but they exist) | Disable other network adapters (VPN, Hyper-V virtual switches) temporarily. The tool binds to the first adapter only. | | Antivirus quarantines the .exe | Add an exclusion for %LocalAppData%\Ubiquiti – false positives are common due to the packed Java runtime. | Go to System Properties > Advanced > Performance
Windows 10’s latest updates re-enable Java’s security manager. v2.5.1 is unsigned.