Gears of War 4 Save Game Location
Windows
Gears of War 4 save games can be found on Windows here:
C:\Users\[user_name]\AppData\Local\Packages\Microsoft.SpartaUWP_8wekyb3d8bbwe
Other Locations:
Gears of War 4 save games may also be found on Windows here:Alt:
C:\Games\Gears of War 4\Save GoW4\[user_id]\UE4DefaultSaveGameContainer\