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duncan37 Author

Level 1

4 points

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When trying to update to High Sierra, I get a popup with an "Unknown error" and it cancels the update.

MacBook Pro, OS X Yosemite (10.10.5)

Posted on Mar 11, 2018 10:35 PM

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Level 2

212 points

Posted on Mar 12, 2018 12:23 AM

Try rebooting in safe mode Apple Support

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Level 2

212 points

Mar 12, 2018 12:23 AM in response to duncan37

Try rebooting in safe mode Apple Support

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