Try to run Mathcad as an administrator.
Check if there has been any anti virus updates on your PC that may be blocking mathcad or try some of https://community.ptc.com/t5/Mathcad-Installation/MathCad-won-t-start/td-p/775820
Or get latest from: ( There has been a new issue this month) go to https://support.ptc.com/appserver/lm/mathcad/download/index.jsp?as=1
Try the following:
P.S. Another one: https://www.ptc.com/en/support/article/CS277907
Hello @RS_14057530,
It looks like you have some responses from some community experts. If any of these replies helped you solve your question please mark the appropriate reply as the Accepted Solution.
Of course, if you have more to share on your issue, please let the Community know so other community members can continue to help you.
Thanks,
Vivek N.
Community Moderation Team.
