Unable to activate license

Unable to help due to lack of information.

On second thought... This might help: https://community.ptc.com/t5/Mathcad-Installation/All-About-Mathcad-Software-Installation/m-p/706433#M26 

Hi @RJ_5828121,

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution. It will help other members who may have the same question.
Of course, if you have more to share on your issue, please pursue the conversation. 

Thanks,
Anurag