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iCloud NOT Working on OS X Sierra

Why? ..



Please help


[Edited by Moderator]

iMac 27″, macOS 10.12

Posted on Apr 11, 2022 8:09 PM

Reply
4 replies

Apr 11, 2022 8:36 PM in response to MACFIX911

First, remove any VPN add-on apps and any add-on security apps and any add-on cleaner apps, and reboot into Safe Mode, and try again. This removes some potentially-problematic apps, and also rebuilds caches and settings.


How to use safe mode on your Mac - Apple Support


Which iMac 27” model year? Given you’re on 10.12, it’ll upgrade to at least 10.13, and quite possibly newer.


How to get old versions of macOS - Apple Support


Get to at least Mojave if you can, and preferably to more current, if you have 64-bit apps and a less-old model year of iMac.


I’ve also seen reports of either an expired certificate or a problem with certificate pinning possibly involved in an iCloud outage from High Sierra and earlier. That outage can potentially be remedied.


If so, here’s a potential work-around:


Unable to establish secure connection to … - Apple Community


Also see: How I solved the Safari 13 and High Sierr… - Apple Community





iCloud NOT Working on OS X Sierra

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