Hi,
Struggling to run Audacity on Vista; can download but not open or run. Any suggestions? 
Which version of Audacity? (look in “Help > About Audacity”)
Did you download via the Audacity website: https://www.audacityteam.org/download/windows/
Did you download the ZIP version or the EXE version?
How did you install it?
What happens when you try to run Audacity?
To run Audacity 2.3.0 on Windows Vista, it may be necessary to install some software from Microsoft,
see … https: //forum.audacityteam.org/viewtopic.php?f=50&t=101600&hilit=microsoft