1.    19 Oct 2016 #1
    Join Date : Oct 2016
    Posts : 1
    windows 10

    Defender closes open programs

    Running windows defender when leaving computer.
    When return the next day, chrome and outlook have been closed, and
    computer is back to login screen.

    Because not looking at computer untill following day,
    not sure if it is closing the programs at beginning, middle, or end of scan

    It also has, at times, totally turned off computer

      My ComputerSystem Spec
  2.    22 Oct 2016 #2
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,451
    Win 10 Pro (1709)

    You might be able to glean more this way:
    Windows Defender — where are the Scan Results?
    Some discussion here, but doesn't give a direct solution:
    Windows Defender causes computer to reboot. - Microsoft Community
      My ComputerSystem Spec


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