Q: My iMac after being shut down boots itself up in the middle of the night

My iMac was recently updated to MacOS Sierra. Tonight, out of the blue, after being shut down (not sleeping) and unused for at least 24 hours, suddenly boots itself up in the middle of the night. I had to get up from bed to shut it down again. Is there an underlying problem I should address? Is this normal? Should I be concerned about malware?

Thanks,

Concerned User

iMac (21.5-inch, Late 2013), macOS Sierra (10.12)

Posted on Oct 22, 2016 12:20 PM

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Q: My iMac after being shut down boots itself up in the middle of the night

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by Georg Portenkirchner,Helpful

Georg Portenkirchner Oct 22, 2016 1:05 PM in response to Sarosha
Level 2 (395 points)

iTunes

Oct 22, 2016 1:05 PM in response to Sarosha

Hi,

take a look in System Preferences under the Energy Saver preferences. There is a setting to wake up/start your computer at a certain time. If so, just deactivate this setting.
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by Sarosha,

Sarosha Oct 22, 2016 1:05 PM in response to Georg Portenkirchner
Level 1 (8 points)

Desktops

Oct 22, 2016 1:05 PM in response to Georg Portenkirchner

Will try this and let you know how it goes. Thank you!
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Q: My iMac after being shut down boots itself up in the middle of the night

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by Georg Portenkirchner,★Helpful

by Sarosha,

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by Georg Portenkirchner,Helpful