See How to use Deskzilla command line optionsUse Deskzilla Command Line Options
deskzilla.license
Accepts: valid file path (either absolute or relative to Deskzilla installation directory)
Since: 1.2
Sets the license key to be used. If not set, the user may be asked for a license key. If set to an invalid or non-existing file, Deskzilla will not be able to start.
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