Finding valid license keys for proprietary software like on GitHub is generally not recommended, as these are often unauthorized or associated with expired evaluation versions .
Let’s be realistic about what a GitHub search returns.
If you upgrade from an older NSX‑T version to 4.2 or later, any existing valid license keys are carried forward. The evaluation period does apply to upgrade installations.
The program is the best legal route for network engineers and system administrators looking to build a home lab.
For dev/test labs, you can use PowerCLI scripts found in GitHub repositories to apply licenses. powershell
