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From the EMS2015 suite I installed AutoCAD, Architecture and Revit. The license server has been upgraded to the latest version of LMTOOLS 11.12. When opening AutoCAD it checks for a license AT LEAST 10 minutes and finally opens. Architecture and Revit open right away.
Try posting here in the Installation & Licensing Forum:
http://forums.autodesk.com/t5/installation-licensing/bd-p/24