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Question: SafariBookmarksSyncAgent preventing sleep

My High Sierra 10.13.3 Macbook Pro never sleeps.

Looking in Activity Monitor, SafariBookmarksSyncAgent seems to be the only thing with Preventing Sleep set to Yes.

If I kill it, it comes back, and launchctl doesn't seem able to stop it either.

Never had the problem before the HS upgrade.

I've never logged into iCloud on this Mac, and don't wish to do so.

MacBook Pro with Retina display, macOS High Sierra (10.13.3)

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Mar 11, 2018 12:03 PM in response to Rob... In response to Rob...

Greetings, Rob!
Thanks for reaching out to the Apple Support Communities! It sounds like you have an issue with your MacBook Pro not going to sleep due to SafariBookmarksSync and I am happy to help out. Since you have checked the Activity Monitor, I suggest following the next steps in then article If your Mac doesn't sleep or wake when expected. Specifically:

If the previous steps don't work

These additional steps may help identify or resolve the issue:

  • Reset the SMC.
  • Reset NVRAM.
  • Disconnect external devices other than your Apple keyboard, mouse, and display. If that resolves the issue, gradually reconnect your devices, testing each time, until you find the device that is interfering with sleep. Then check the documentation that came with the device, or contact the device manufacturer.
  • Start up in Safe Mode to see if the issue is related to non-Apple startup items, login items, or kernel extensions.
  • Try to isolate the issue by using another user account.

If you still see the issue, contact Apple Support.


Mar 11, 2018 12:03 PM

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Question: SafariBookmarksSyncAgent preventing sleep