A more correct way to say my last message is that you'd need to have Python and rhodecode linked to the same runtime, by compiling with the same Visual Studio.

If you require VS2012 with Python 2.7, you'll need to port Python on your own and then your setup would work. We can't accept your patch on #17056, so you'd have to do the work to make 2.7 work with 2012 and maintain the patch yourself.