Solved! Go to Solution.
Did you follow this instruction? Tip - "How to Obtain License for Mathcad 15 Trial Edition?": https://community.ptc.com/t5/PTC-Mathcad-Installation/How-to-Obtain-License-for-Mathcad-15-Trial-Edi...
What issue do you get on your screen?
I'm glad you solved your problem.