I had that multiple times on both Surface tablet and desktop, tried this and worked on both counts :).....
What this error means is, your Windows 10 installation folder is unfinished and/or corrupted. Now, how do you fix that?
1. Go into "C:\Windows\SoftwareDistribution\Download" and delete everything in that folder.
2. Now, run the command prompt as an administrator. Type in "wuauclt.exe /updatenow".
3. Go to your Control Panel > Windows Update and your Windows 10 should start re-downloading from scratch, hopefully without flaws this time.
From Reddit..
https://www.reddit.com/r/windows/com...ng_to_install/