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I am installing AutoCAD LT 2012 for this first time, The license has not been activated before. When trying to activate I get an invalid serial number error and the process stops.
Hi,
You can try to activate your software online on the new machine.
If this does not work please send me a PM (click on t_gaisf profile name and then Send this User a Private Message) with your Serial Number, the request code and confirm the registered company name or contact our licence assistance team for direct support.