I am using Windows. I am not trying to extract the exe. I'm using the link in Pega Academy to download the zip file. When you extract the zip file to the pega-vm folder you get the error. I've looked in the zip to see if there is an exe or install program but there isn't.
OK. I downloaded stuffit expander (64 bit version) and installed it. Then I ran it against both version of the download. In both case I got an error that indicated the file is corrupt. I've downloaded this twice and the file sizes are identical. Not sure what to do at this point.
The exercise system VM is compressed into a ZIP file. Please be aware that Microsoft Windows operating systems only supports the original .ZIP algorithm that has a 4.2 GB file size limit. The new ZIP64 algorithm that handles larger files is supported by free tools like: 7-zip (http://www.7-zip.org/)