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Activation invalid on ArcGIS 10.2 desktop student trial?!

Question asked by arcacarruth on Nov 2, 2015
Latest reply on Nov 2, 2015 by Dan_Patterson

Installed in July and activated a one-year student trial.  But now ArcGIS Administrator shows no license, four months later.


When I tried re-activating with original activation ID furnished by ESRI, this is the error msg: 

"Invalid authorization Activation ID: EVA123456789-1010 [Incident #4426-84288360]" 


Note: ID#s changed but incident # is unchanged.


What have I done wrong and how can I re-activate my bona fide student trial?