I upgraded to macOS High sierra and now my system shuts down automatically at night. This is quite annoying.

I tried looking in System Preferences > Energy Saver > Schedule… settings but, there's no schedule set.

Can someone please help me with this.

I am using MacBook Pro 15" Mid 2015

  • The only place I know that could be set to do that is.. System Prefs > Energy Saver > Schedule There was recently a question where someone found that was enabled without their knowledge.
    – Tetsujin
    Sep 29 '17 at 6:24
  • Thanks @Tetsujin, I have already checked it, it is not enabled.
    – banjara
    Sep 29 '17 at 6:48
  • I don't recall the source, but this might be a "feature". Sep 29 '17 at 15:19
  • 2
    Same problem here on a Touchbar MBP 15". Hoping a dot release fixes it.
    – simontarr
    Oct 4 '17 at 1:38
  • 1
    @AkshayLokur try 'xcode-select --install'
    – banjara
    Oct 9 '17 at 4:53

Installing "command line tools" solved this issue. However, I have no clue how they are related.

To install command line tools run following command in terminal.

xcode-select --install

I have had the same issue each day since installing High Sierra. However, in my case, the computer doesn't shut down, but rather goes into deep sleep. I called AppleCare and they acknowledged the issue and said they are working on it.

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