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Installation should be no problem....IF....you have an installation source.
Getting it licensed is the challenge. Do you have a license?
I think you should first read this (and note how long ago this is):https://community.ptc.com/t5/Mathcad-Tips/Official-PTC-Mathcad-15-and-Prime-1-6-End-of-Sale-Announcement/ta-p/818870
Success!Luc
