You are right.  Despite many people (including me) trying very hard, nobody has yet successfully ported Sage to properly to Windows.  It&#x27;s millions of lines of code, and difficult to fully port due to many  dependencies written by research mathematicians that only support POSIX Unix. Also, I just counted support requests at <a href="https:&#x2F;&#x2F;groups.google.com&#x2F;forum&#x2F;#!forum&#x2F;sage-support" rel="nofollow">https:&#x2F;&#x2F;groups.google.com&#x2F;forum&#x2F;#!forum&#x2F;sage-support</a> for this month (Feb 2016) and nearly half of them are problems installing Sage.   (Disclaimer: I wrote the above blog post.)