Installing Gears of War 4 on Windows can only be described as a hellish nightmare. Here are my notes on how I finally got it to install and run.

• Download file with fiddler and a download accelerator, as outlined here:

[GUIDE v2.0] How to download install package for Windows Store games (bypass Store download issues or for install on another PC)
byu/ShadowStealer7 inpcgaming

• Once you have the file, begin installing / downloading the game from the Windows store. Get several hundred MB / a few GB, then pause download.
• Open powershell (no need to be an admin) and run the following:

  • Add-AppxPackage -path "<PATH TO GEARS FILE>"

After finish, close windows store and re-open, launch from there.

You may need to repeat removal and installation process many times, but now that you have the EAPPX file, it should be much less painful.