If you are trying to download Isaac from our website using a Windows 10 PC, use a browser other than Chrome. For reasons we don't understand, the Chrome browser does not permit download of Isaac/Windows.
On a Windows 10 PC, use Edge or another browser to download Isaac/Windows.
Also, make sure your Windows 10 PC is set to install Isaac:
https://velocompforum.com/viewtopic.php?f=35&t=5380
How to download Isaac/Windows on a Windows 10 PC
How to download Isaac/Windows on a Windows 10 PC
John Hamann