Try referring to this link https://community.ptc.com/t5/PTC-Mathcad-Installation/All-About-Mathcad-Software-Installation/td-p/7... and see if it helps to troubleshoot your problem.
Thanks for using PTC Community!
Member rghadge replied to your post. It seems you have marked the below reply from this member as "Accepted Solution".
"Did you get chance to provide update on this conversation?"
Can you please review the thread once again and mark the correct response(the one that actually solved the problem) as accepted solution?
This is for the benefit of other Community members who may have the same question. rt.