If a license is granted when the tool is started from one environment (for
example, Eclipse) and the license is not granted if the tool is started from
another environment (for example, a DOS Box, a custom Start Menu, Taskbar,
or File Explorer), this may indicate that the variable settings between
these environments are different.
When a toolset is successfully
installed, new environment settings are applied. However, these settings are
not yet passed to applications that were already active before the toolset
installation.
To get this right, you must restart the application (like a DOS Box, File Explorer, etc.). If the problem persists, simply restart the computer.