macOS Bug: Connecting to another Mac via SMB protocol results in client hanging indefinitely at shutdown or restart

How to force SMB2, which actually doesn’t work for me:

10.14.3 – SMB3 Performance Issues – Force SMB2

Related discussion on Apple Communities

Computers Won’t Shut Down After Connecting To Server

Bug reports on Apple Radar:

How to submit sysdiagnose:

  • Command + Option + Shift+ Control + Period (.)
  • Or in Terminal: sudo sysdiagnose

Note: The sysdiagnose process can take 10 minutes to complete. Once finished, the folder /private/var/tmp/ should appear automatically in the Finder and the sysdiagnose file there will look similar to this:

sysdiagnose_2017.08.17_07-30-12-0700_10169.tar.gz

View active SMB connection status:

smbutil statshares -a

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