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Recover you destroyed GstarCAD license by declaration of software removal.
The closest complete version of GstarCAD omits 3D CAD functionality and parameter constraints but is equipped with express tools and supports app load for Lisp or VBA, vastly improving drawing performance. ACAD users require minimal additional training.
FOR NETWORK FLOATING LICENSE:
The Network License Manager requires a computer or server for license hosting. compatible with Windows 10, 11, Windows Server 2016 or 2019