Something happened and we could not install a feature.

For all preview build I have installed to date (on 20298 at the moment) I have pop ups that keep appearing.  I will get one that says  "We are adding new features to Windows."..... then another after that says "Something happened and we could not install a feature."  I have no idea what it is trying to install so no way to diagnose the issue.

Also I have it promoted to domain controller, in this mode it seems that the night light cannot be enabled.

I also find that the screen saver /display turn off will not always function, even when nothing should  be stopping it.  If I use powercfg -requests in CMD then it shows nothing is stopping the display from turning off.  I have turn off display after 1min, blank screen saver after 1 min with require logon to resume.  Works most of the time then may not work for other times.  Strange.