I have noticed that every time Explorer now has this freezing problem, I can find "
Windows Shell -Experience Host" running. Because all this is during startup, I don't know if it also was running before the freeze (but it never did before Blackbird) - if it was the trigger, or being triggered.
C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe (Path) = "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca (Command Line)
CPU-0%, Memory,, -40 MB, Pagefile,, -17 MB, Disk-0 K/s,, Resources usage
676 - svchost.exe,, Parent Process