I am trying to install GarminExpress 3.2.26 on my Windows 8.1 machine with all the latest updates. It keeps failing while downloading required components. I have re-tried over and over and also tried 3.2.18 with the same error.
Well it's not generally a Win 8 issue, I've installed Express onto my Win8.1 notebook without issue. Your best bet would be to call Product Support. They can remotely look at your PCs to determine what issue they have.
We have just released a new version of Garmin Express to resolve this issue. Any earlier versions of express will no longer install due to changes with the required Microsoft components. You can download the latest version here:
http://download.garmin.com/omt/express/GarminExpress.exe