Glenn FleishmanSenior Contributor, Macworld

Glenn Fleishman is the author of dozens of books, including his newly released Take Control of Your Apple ID, a guide to troubleshooting Apple ID problems and managing security and the features. He's a senior contributor to Macworld, where he writes Mac 911.

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How to find and insert special characters in macOS

Apple supports the full range of Unicode, but it can be hard to find the symbol you need.

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Why iTunes says your iOS 12 device isn’t recognized

iPhones are fickle about the versions of macOS and iTunes they can connect with.

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How to download your Flickr photo library and transfer it to Google Photos or iCloud Photo library

You can duplicate your Flickr library entirely, or even flee it and delete your account.

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How to move photos to iCloud Photos without an up-to-date Mac

Some people may have legacy machines or other limitations that can hinder using iCloud Photos. Here’s a workaround.

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How to reinstall macOS if macOS Recovery is unavailable

Apple has a fallback option that requires an internet connection.

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How to recover deleted photos from an iPhone or iPad

Chances are they’re gone, but there are a few places you can check.

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If you can’t get macOS Mail to work after upgrading to two-factor authentication, here’s a way to fix it

You may have manually set up your iCloud account for email long ago.

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What you can do with an internal SSD module from a vintage Mac

Got an older Mac, and you upgraded the SSD module? You can put the old SSD in an external enclosure, but they’re not cheap.

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Loopback 2 review: Elevates the interface for sophisticated sound routing in macOS

This pro-level audio input mixer app for Mac is useful for musicians, DJs, audio engineers, and podcasters.

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Can you replace a fan in Apple’s AirPort Extreme?

It’s not a trivial task, but it can be done. (And yes, the AirPort Extreme has an actual fan.)

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What to do when the Mac App Store won’t assign applications to your account

You have several methods to try to resolve the problem.

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What you get when you export Calendar and Reminders in macOS, and how to use those files

The archive formats vary by app and by export selection in Calendar.

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Stuck in macOS Recovery with a language you don’t speak? Here’s what you can do to fix this

You don’t have to speak Chinese, Russian, Spanish, or other languages to fix this problem.

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The most important thing to do if your Mac has a Fusion Drive: Back up your data

Apple's Fusion Drive combines data on an SSD and hard drive. It provides fast speeds and spacious storage, but trying to recover lost data is a huge problem.

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If macOS’s Migration Assistant fails, here are other ways to move accounts

Apple has taken great strides with its migration helper, but it doesn’t always do the trick.