Upgrade to macOS Sierra
Take advantage of smart new features like Siri on Mac, Auto Unlock, Optimized Storage, and much more.

Featured topics
Move your content to a new Mac
Use Migration Assistant to copy all of your documents, apps, user accounts, and settings to a new Mac from another computer.
Move your contentUse Time Machine to back up or restore your Mac
Time Machine backs up all of your files to an external hard drive so that you can restore them later or see how they looked in the past.
Learn how to back upUse Siri on your Mac
macOS Sierra brings Siri to your Mac and includes features from Siri on iOS as well as new capabilities designed just for your desktop.
Learn more about Siri
Free up storage space on your Mac
macOS Sierra can save space by storing your content in the cloud. And new tools make it easy to find and remove large or unneeded files.
Learn more about DSEUse Continuity to connect your Mac, iPhone, iPad, iPod touch, and Apple Watch
Move seamlessly between your devices with Handoff, Universal Clipboard, iPhone Cellular Calls, SMS/MMS messaging, Instant Hotspot, and Auto Unlock.
Learn about Universal ClipboardUse Photos on your Mac
The Photos app on your Mac helps you keep your library of photos and videos organized and accessible. Learn how to get your photos on all of your devices, manage your collection, and edit and share your photos.
Learn about the Photos appChange or reset the password of an OS X user account
You can change the password that you use to log in to your Mac, or reset the password if you don't remember it.
Forgot login passwordIf you forgot your Apple ID password
If you're having issues signing in with your Apple ID password, use these steps to reset it and regain access to your account.
Regain accessTwo-factor authentication for Apple ID
Two-factor authentication is an extra layer of security for your Apple ID designed to ensure that you're the only person who can access your account, even if someone knows your password.
Learn about two-factor authenticationCheck for Wi-Fi issues using your Mac
Your Mac can analyze Wi-Fi connections for certain issues, then recommend solutions.
Get help with Wi-FiUse AirDrop to send content from your Mac
With AirDrop, you can wirelessly send photos, videos, websites, locations, and more to a nearby iPhone, iPad, iPod touch, or Mac.
Learn about AirDropUse AirPlay to display video from your Mac on an HDTV
If you have an Apple TV, you can use AirPlay to wirelessly stream video to your HDTV from Safari or QuickTime Player, or use your HDTV as a Mac display.
Learn about AirPlaySearch for more topics
Safari Support
Safari lets you browse the web fast, with easy-to-use features that help you quickly access your favorite sites, and control your privacy on the web.
Learn about SafariMail Support
Learn more about using Mail to send and receive email. Find out how to configure and troubleshoot.
Find mail solutionsResources
View information about features in macOS Sierra including Siri, Auto Unlock, Disk space, and more.
Find all the technical specifications for macOS Sierra.
Here are a few topics to help get you started with your new Mac.

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