Let us know if you have any additional questions about High Sierra or computer-related issues. I hope you find this above guide helpful. Also, consider using password manager software to manage those passwords. Therefore, it’d be wise to delete those keychain data immediately once you finish the installation, just in case. One more thing: not sure if you’ve heard about this security issue with the latest macOS - a hacker recently found a vulnerability in macOS High Sierra that could allow any installed third-party applications to steal usernames and plaintext passwords of online accounts stored in the Mac Keychain. The newest macOS 10.13 High Sierra, it’s likely rolling out slowly in the first week but eventually, we believe you’ll get a notification like that. Usually, Apple pushes out a notification for every major update and you’ll be notified via the Notification center (make sure you’ve enabled it). Honestly, we don’t have the right answer. Why isn’t this update showing up on App Store? Select to update to MacOS Catalina 10.15.5 update. Choose the Software Update preference panel. Go to the Apple menu, then choose System Preferences. Always backup the Mac with Time Machine before installing updates to system software. Note: the installation process could take quite a while, though it depends on your Internet speed and the Mac model. How to Download & Install MacOS Catalina 10.15.5 Update. A new window will pop up asking to install the new operating system. UPDATE: you can also learn how to install macOS Mojave on Mac App Store. Next, here is a step-by-step guide on how to properly access the download page of High Sierra and download the package. They may take a few moments to go through, but totally worth it. There are a few important things you should check to prepare your Mac for High Sierra. Well, Apple wasn’t lying □ It’s just a bit tricky to download High Sierra. MacOS High Sierra update didn’t show up in Mac App Store ‘Updates” tab at all (nor “Purchases”), though Apple had an official news feed stating the update was available as a free update four days ago. You’re in luck! One of my teammates also had the same confusion. I haven’t received any official notifications regarding the update from Apple either. To my surprise, there isn’t anything showing up under “Update” tab of Mac App Store. Last night I was planning to upgrade my MacBook Air to latest macOS High Sierra.
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