Setup was not completed successfully Instillation Aborted

Whenever I try to install the game I launch the launcher setup it stops at about 35% and says Instillation Aborted Setup was not completed successfully

If this is not the first time you install the launcher, then there’s already a thread about problems with that: Launcher installation problems - #4 by hhyyrylainen

If it isn’t that, there still isn’t much I can do. I just use to make the launcher releases and it manages making the installer. I do regularly update the version of that tool used when making new releases.

For now you can download the non installer version, which is just a plain exe that just runs the launcher without installing.