Sooooo, anybody get the Cumulative Update June 26, 2018—
KB4284848 for Win10 v1803?
I think it has messed up some things like Mail and Calendar app, Outlook (fixed?), Office Click to Run (fixed?), Xbox Game Bar and maybe other stuff too? I am still looking into this mater for the past three days.
Edit: Some Edge extensions and paid internet security software possibly? But sorted and has been fixed as well.
And yes the Servicing Stack Update
KB4338853 I see was also installed at the same time.
I unforchantly I cleaned up the system drive and deleted all the Windows leftovers as I often do after an update.
So no restore point ... Joy?