Windows already tried to install the 1803 April (although 1803 logically would be March) update for the 12th time (!)
The furthest it got was a not functioning taskbar, and a disappeared desktop with only the recycle bin visible on a black background.
A restart subsequently results in restoring the previous version (1709) of Windows.
Laptop: MSI CR720.
Is this a common error?
Are there any solutions to arrive at a normal install?