The most common mistake we see made during ‘System Locked’ license setup is not running an admin command shell - if you just run it in user mode, it doesn’t have permission to create a file in the Program Files folder. Right click the Command Prompt app and select ‘Run as administrator’.
The second most common error we see is people mis-entering the license key. The help topic shows the command line like this:
That is “LightBurn”, followed by a minus sign and a lower-case letter L, a space, then your license key (without the <>'s around it).
So it should look like this:
LightBurn -l ABCDEF-123456-789012-FDBEA1-2G675A
And it must be entered using a command shell with administrative rights. On Windows you “run as administrator”, and on MacOS you use “sudo” followed by the command above.