almost 3 years ago - AndrewT - Direct link
Steam Cloud saves write to the local disk, then sync up to their cloud when you exit the game. If the MS update reboots your machine in the middle of playing, that can't happen of course. You can see what is up there here:
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Your only hope is the local cached copy of the cloud save on the laptop, which would be at .../Steam/userdata/yourSteamID#/281990/remote/save games/


As far as preventing this goes, first would be to set Windows 10 to do its updates late at night or early in the morning when you wouldn't be playing! Aside from that both local and cloud saves have potential issues in Ironman because they rely on a single save file; on eidea would be to make a manual copy of that each time you start or end a play session so you don't lose so much progress.