I just downloaded Godot 2.1.3 Stable to my Windows Vista Home Premium 32 bit system.
It seems to work.
But when I followed the first "Step by Step" tutorial (Docs/Learning: 2D: create a label and add text "Hello World" to it, then run to display) I carefully did everything described. I got the box markers in the editing window.
But when I run it all I ever get is a plain grey window with nothing in it.
So I tried a similar tutorial on "gamesfromscratch", a video that used a RichText label. I carefully copied everything he did. He got text displayed. I still got a plain grey blank window.
Then I created a node first, then a label as a child to it. Still nothing displays.
While composing this question I tried it again. This time not even the editing box markers appear. Nothing, not even in the editing window.
From the questions and comments I see, this seems to work for everyone but me.
Does Godot not work in Windows Vista?
Has anyone else experienced this?