Launch windows explorer and browse to folder where Mathcad 15-EN.zip file has been downloaded. Download CD for Mathcad 15 Trial Edition. Step by Step procedure to Install Mathcad 15ġ. Moving forward, the below mentioned links for Mathcad 15.0 Trial download will be routed to latest release of Mathcad Prime. For more details, refer note from Mathcad Product Manager. After December 31, 2021, PTC will no longer have the right to sell or distribute software versions moving to end of sale due to a third-party component contained in those versions. Kindly Note : Effective January 1, 2022, the only version of PTC Mathcad available for subscription will be PTC Mathcad Prime 7 and future versions of PTC Mathcad Prime.