I've spent all day so far trying to resolve this. File sharing just doesn't work any more!

I am now fairly certain that installing Security Update 2017-001 for macOS High Sierra to fix the “root” vulnerability problem (see: https://www.imore.com/macos-has-root-bug), is the cause of my file sharing problem! C'mon Apple, where's your quality control!

Does anyone know how I can fix this?

1 Answer 1


Apple has already issued a quick fix to this. Follow these steps:

  1. Launch the Terminal app (usually found in the Utilities folder within your Applications folder)
  2. Copy the following command and paste it into Terminal:

sudo /usr/libexec/configureLocalKDC

  1. Press enter
  2. Enter your Admin password (Note: You won’t actually see the cursor move as you enter your password)
  3. Press enter

For more info: https://support.apple.com/en-us/HT208317

  • OMG! This works. I wasted 7 hours trying to fix this. Thank you thank you thank you!
    – user265986
    Commented Nov 30, 2017 at 8:39
  • 3
    Damn Apple is a train wreck this week.
    – spacetyper
    Commented Nov 30, 2017 at 15:44

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