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It's by default 644 on MacOS if I create a directory under $HOME directory and 777 is not secure under my environment.
Once the permission of ~/Parallels was changed to 644 Windows could not shutdown, Windows Update would fails, After force quit of PD, Windows...
Tried this on Mac: chmod 644 ~/Parallels Things would go really weird, Guests could not stop or start but Parallels Desktop won't warn or report...