Glenn FleishmanSenior Contributor, Macworld

Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.

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How to set up an Apple ID without a payment method

Want an Apple ID but plan to never pay for a single thing from Apple through that ID? Here's how to set it up.

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iCloud email won’t send? Here's what to check to fix it

iCloud has restrictions that could prevent your email from being sent. If you have too many recipients, iCloud address errors, or really big file attachments, iCloud won't send your message.

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How to block tracking pixels in Apple Mail

Emails you get from mailing lists may be trying to spy on your activity. Here’s how to block stop that from happening.

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What to do when switching to a Mac with a smaller drive

If your current Mac has more data stored than the capacity of the new one, you probably feel you’re in a pickle. Here's what you can do to make the transition work.

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How to make macOS apps available to a single user instead of all users

If you’re sharing a Mac, you may want to restrict access to certain apps. Here’s how it’s done.

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How to start up your M1 Mac from an external drive

Need to boot your M1 Mac with an external drive? It’s not as easy as it used to be, as it likely requires you purchase new hardware.

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Thinking of upgrading from a Fusion drive on a Mac? Here’s what you need to know

With a Fusion drive, you can’t upgrade just the SSD or hard drive components without doing some hard work.

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How to split up an Apple ID among family members and forward their email

It’s easy to wind up with a single Apple ID account for your entire family, and then want to migrate to individual ones. Apple doesn’t let you split Apple ID accounts up, but here’s a set of strategies that can help.

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How to check if an unexpected prompt for your Apple ID password is legitimate

If you get a random popup on your Mac, iPhone, or iPad, you’re right to initially mistrust it.

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How to use facial recognition from your Photos library with Apple HomeKit Secure Video

Apple lets you know who is at the door or another camera when used in conjunction with its secure video system.

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How to override the font settings in Safari for all pages

Safari lets you set a style sheet that can override anything on a web page.

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How to use People Detection in iOS 14’s Magnifier app

This accessibility tool provides a host of useful features you may have missed.

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Can’t upload files in Safari? Update to Safari 14.0.3 (or drag and drop)

An update to Safari disabled the option for websites to prompt to let you upload files. It’s been fixed.

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See red squares on your Mac’s display? There might be a problem with the GPU

The problem doesn’t appear widespread, but users report incidents that date back years.

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How to remove an Apple device from your iCloud account without the device

If you lose or sell the device or it’s stolen, you can remove it from your iCloud set remotely.