Openmw 0.43.0 doesn't have a windows download
https://downloads.openmw.org/windows/
There's no 0.43.0 download on this page, but it says it has been releases on the homepage.
(RM-4248 from redmine: created on 2017-12-06 by Luke D, , closed on 2017-12-09 by Lukasz Gromanowski)