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Slack is preventing my Mac from sleeping. I can see this information in the Activity Monitor.
How can I disable it? I want my mac to sleep even when Slack is open.

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  • Update 2021: same issue, the only way to allow my mac to go to sleep while plugged-in is to quit the Slack app... :(
    – MrYoshiji
    Sep 3, 2021 at 12:59
  • At some point after restarting my machine, slack stopped preventing my mac from sleeping. I have no idea what was changed.
    – bobsacameno
    Sep 5, 2021 at 9:31
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    I think it keeps it awake after you do a Huddle. I had to restart the app after a hudd to go back to not keeping it awake.
    – chamini2
    Oct 12, 2022 at 14:24
  • Slack has recently been made aware of this issue.
    – Noel Yap
    Nov 14, 2022 at 19:40

1 Answer 1

Reset to default
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It's the "Slack Helper" service preventing your mac from sleeping.

If you open the Activity Monitor and terminate the service, it will go to sleep.

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  • It might apply only when you use an HDMI monitor as your sound output: that is what I see by experimenting with switching to built in speakers.
    – nmgeek
    Dec 24, 2022 at 19:48

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