I spent hours on the phone with MS help and they accomplished nothing. The only thing of interest is when they did the following:
DISM.exe /Online /Cleanup-image /Restorehealth
It failed with an error 0x800f081f
however, after that the tech never pursued this error.
This seems to be a side effect of the failed update. There are some threads on the community forums and elsewhere about this issue. The error message may or may not signify a problem and may be a false error message but in any event there has been nothing
from Microsoft about the issue.
Obviously Microsoft still hasn't figured out what the problem is for many users. The company undoubtedly views post on the forums but still allows the volunteers to post the same solutions which have appeared here since April 8th but which do not work. Since
the posters are volunteers who may or may not have a clue as to whether the "solutions" will work at least it allows Microsoft to distance itself from those "solutions" because they are proposed by volunteers and not "solutions" officially proposed by the
company. Can you say plausible deniability?