A lot of Windows 10 users experiencing issues after download and install the latest windows update and they are stacked with a message that said "' we couldn't complete updates undoing changes every time the start up windows.
Download the Windows 10 April 2018 Update 1803 (64-bit) ISO image directly from Microsoft.
Right-click on Windows 10 downloaded file >and open with Windows Explorer > right click on setup.exe > ‘Run as admin’.
The installation wizard will now begin.
Don’t select > ‘Download and install updates' select 'not now' and click on ‘Next’.
Follow the onscreen instructions and select ‘Keep personal files & apps’ under choose what to keep option.
Click on ‘Install’ ---- you are all good to go.