Glenn FleishmanSenior Contributor, Macworld

Glenn Fleishman is the author of dozens of books, including Take Control of Wi-Fi Networking and Security (updated for iOS/iPadOS 13 and Catalina), a detailed guide to wireless networking and security. He's a senior contributor to Macworld, where he writes Mac 911.

ios photos icon

Accidentally merged a set of photos in iCloud Photo Library? Here’s a fix

There are a couple of ways you can unmix a set of pictures in Apple’s Photos app.

Password obscured.

How to use Apple’s new re-used password warning to reduce your risk of account hijacking

A new warning in both iOS 12 and macOS 10.14 Mojave alerts you when you use a password with two or more sites or apps.

apple tv 4k

How to use iOS 12 to enter passwords on an Apple TV

The latest release lets you use the QuickType bar to pass over passwords from iOS to tvOS.

apple cinema display

Want to connect an old DVI monitor to newer Mac with USB-C? Here’s one way to do it

A Macworld reader found a solution that helps folks who invested in an Apple Cinema Display.

imac photo stock

What to do when Photos for Mac says your external drive uses an unsupported format

A reader wants to shift their Photos library to an external drive, but received an unexpected error message.

macos high sierra folder icon

What’s that weird app folder doing in your iCloud storage?

It may seem like something hacked your iOS device, but the explanation can often be simpler. It may have something to do with other software you’re using from a developer.

icloud icon 2015

How to disable Optimized iCloud Drive storage with a single click

If you want to always keep iCloud Drives files available on your Mac, uncheck a box.

1password7 mac icon

How to fix a 1Password sync problem

A popular password safe sometimes disconnects from its vault.

amped wireless Smart Wi-Fi Power Strip

Amped Wireless Smart Strip review: Most effective when it's paired with an Amazon Echo or Google Home

You can control its three outlets and two USB ports independently, but its app has weak timer features and no scene-control functions.

on techhive.com

imac photo stock

How to consolidate media from old apps into a single Photos library

If you want to consolidate old iPhoto and Aperture libraries, you need a third-party app to deal with the duplicates.

2017 and 2018 9.7-inch iPads

How to transfer music between two iOS devices

Transferring files between two iOS devices—without using a third computer—is a little tricky

icloud photos

Why you shouldn't rely on iCloud Drive as your only backup

You could wind up with data stored only in iCloud, offering a single point of failure.

filevault2 mac icon

How to remove your FileVault recovery key from iCloud

You can use Apple iCloud for escrow, but here's how to store the key stored locally if you change your mind.

apple cinema hd display 30

The problems with older Apple displays and Thunderbolt 3 MacBook Pros

While you can connect many models of Apple displays to a laptop via USB-C, you can’t pass power, too, in a reliable manner.

iphone x home screen

How old can your version of iOS be before upgrading?

Apple appears to have designed its backups with the future in mind.