Community Tip - You can change your system assigned username to something more personal in your community settings. X
See Vladimir's post for a download, it should get you started on downloading and installing Mathcad 15. If you (already) have a license file, you should be able to license the software after installation and use it..
If not, refer to this, to find the most suitable information for your problem:
Success!
Luc
This is M045 service release.