That there is no sticky for this is strange, getting this old stuff running again isn't easy. Anyhow, I was coming back to this after a long time and couldn't get it installed, all toying with compatibility settings like WinXP, run as admin, etc. didn't bring any success, the setup was still hanging and not proceeding with the installation. What finally helped was a note on the web that disabling a logitech task helped getting it installed. I thought I try it and in my case I closed logitechg_discord.exe and suddenly the installation started.