I get "Device Health" as either "All Good" or "Critical" ... with NOTHING in between these two extremes - and often a striking similarity between two machines that show these two Health status'. ...
samjarvis Sam, I've found the same problem with the Microsoft update and used the Microsoft Show/hide updates ( see link here - https://techcommunity.microsoft.com/t5/windows-servicing/why-have-all-microsoft-download-links-for-wushowhide-diagcab/m-p/2458783/page/2
... to get rid of the update altogether.