It didn't show up in the quote, here it is:
Try the following powershell command:

Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register...

This problem reoccurred after a few days, but this method worked like a charm. Thanks whomever posted this first and thereafter......

I found these hideous entries at: C:\Users\me\Tracing\WPPMedia\Skype_MediaStackETW-6.0.8944.324-lcsmedia_vnext_release4(rtbldlab)-x86fre-U.etl

Wonder if I delete them things will be better?

Not sure which one of the millions of the above suggestions really worked, but it started working. MS should hire some retirees back to put them straight.