Norton 360 Setup: Install on PC, Mac, & Mobile

This guide walks you through installing and setting up Norton 360 on Windows, macOS, Android, and iOS. You’ll learn how to create or sign in to your Norton account, download the correct version for each device, activate your subscription, and verify that everything is running correctly.

What You’ll Need

A valid Norton 360 subscription (purchase or activation code).
The email address used for your Norton account.
An internet connection on each device.
Administrator access on your computer (to install software).
Your device’s app store (Google Play or Apple App Store) for mobile installs.

Step-by-Step

Sign in to your Norton account. Open a web browser and go to my.norton.com. Click Sign In and enter the email and password you used when you purchased the subscription. If you don’t have an account yet, click Create Account and follow the prompts.
Locate your subscription. After signing in, you’ll see your subscription details on the main dashboard. If you have an activation code (a 25-character alphanumeric code), click Enter a New Product Key and paste it. The subscription should now appear in your account.
Download Norton 360 on Windows or Mac. On the dashboard, find the device you want to install on and click Download (or Install). The installer file will be saved to your computer. For Windows, the file is typically NortonSetup.exe; for Mac, it’s NortonInstaller.dmg.
Run the installer. Double-click the downloaded file. If a User Account Control (UAC) prompt appears on Windows, click Yes. On Mac, you may need to right-click the file and select Open to bypass Gatekeeper warnings for downloaded apps. Follow the on-screen instructions.
Sign in during installation. The installer will ask you to sign in to your Norton account. Enter the same email and password from step 1. This links the installation to your subscription.
Wait for the installation to complete. Norton will download and install its components. This can take 5–10 minutes. Do not turn off your computer or disconnect from the internet during this time.
Restart your device if prompted. Some installations require a restart to finish. Save your work and restart when asked.
Activate the product. After restart, Norton 360 should open automatically. If not, launch it from the Start menu (Windows) or Applications folder (Mac). You’ll see a message like “Your device is protected� or “Subscription active.� If you see a red X, click Fix Now to resolve any issues.
Install on additional devices. Repeat steps 3–8 for each computer. Your subscription covers a specific number of devices (e.g., 1, 3, 5, or 10). You can manage devices from your Norton account dashboard.
Install on Android. Open the Google Play Store on your Android phone or tablet. Search for “Norton 360� and select the official app from NortonLifeLock. Tap Install, then open the app. Sign in with your Norton account. Follow the setup wizard to grant necessary permissions (like phone and storage access).
Install on iOS. Open the App Store on your iPhone or iPad. Search for “Norton 360� and download the official app. Open it and sign in with your Norton account. The app will guide you through enabling VPN, web protection, and other features. Note that iOS limits some security functions due to Apple’s restrictions.
Verify protection status. After installation, open Norton 360 on each device. The main screen should show a green checkmark or “Protected.� If you see yellow or red, click Fix Now to run a scan or update.
Run a quick scan (optional). To confirm everything is working, run a Quick Scan. In Norton 360, go to Security > Scans > Quick Scan. This will check common malware locations and confirm the antivirus engine is functional.
Set up automatic renewal (optional). To avoid lapses in protection, you can enable auto-renewal in your Norton account. Go to Subscription and toggle on Auto Renewal. This is optional but recommended.

Common Mistakes

Using the wrong email. If you purchased Norton from a third-party retailer, make sure the email you use matches the one on the order confirmation. Using a different email will not show your subscription.
Skipping the restart. Some Windows installations require a restart to complete the driver installation. Skipping it can leave Norton in a broken state.
Not uninstalling other antivirus software. Having multiple antivirus programs can cause conflicts. Before installing Norton, uninstall any other security software (like McAfee or Avast) using Windows Settings > Apps or the macOS Applications folder.
Ignoring the activation code. If you have a physical card with a code, you must enter it in your Norton account before installing. Installing without activating will result in a trial version.
Installing on more devices than your plan allows. If you exceed the device limit, Norton will block the installation. Check your subscription’s device count on the dashboard.

Tips

Use a password manager. Norton 360 includes a password manager. Set it up during installation to store your logins securely.
Enable the VPN for public Wi-Fi. Norton 360 includes a VPN. Turn it on when using public networks to encrypt your traffic.
Keep Norton updated. Norton updates itself automatically, but you can check for updates manually by clicking LiveUpdate in the main interface.
Set a schedule for scans. In the settings, you can schedule weekly scans at a time when your computer is idle.
Use the mobile app’s anti-theft features. On Android, you can locate, lock, or wipe your device remotely via the Norton mobile app.

Troubleshooting

Installation fails or freezes. First, restart your device and try again. If the problem persists, download the Norton Remove and Reinstall tool from Norton’s official support site (search “Norton Remove and Reinstall�). Run it to completely remove any leftover files, then reinstall fresh.
“Product key already used� error. This means the code was already redeemed. If you believe this is an error, contact Norton Support with your proof of purchase. They can verify and reissue a new key if necessary.
Subscription not showing after login. Double-check that you’re using the correct email. If you have multiple Norton accounts, try signing in with a different email. You can also use the “Forgot Password� link to reset your password.
Norton says “Not Protected.� Open Norton 360 and click Fix Now. This will often run a scan, update virus definitions, and repair any issues. If the problem continues, restart your device.
Mobile app won’t activate. Make sure your device’s date and time are set correctly. Also, check that you have a stable internet connection. If the app still fails, uninstall and reinstall it from the app store.
Can’t install on a new computer because the device limit is reached. Sign in to your Norton account, go to Devices, and remove any old or inactive devices. Then try installing again.

Frequently Asked Questions

Can I install Norton 360 on multiple devices with one subscription?

Yes, Norton 360 plans come with a specific device count (e.g., 1, 3, 5, or 10). You can install it on a mix of Windows, Mac, Android, and iOS devices up to that limit.

Do I need to uninstall other antivirus software before installing Norton?

It’s highly recommended. Running two antivirus programs simultaneously can cause conflicts, slow down your system, and reduce protection. Uninstall any other security software before installing Norton.

How do I transfer Norton 360 to a new computer?

Sign in to your Norton account, go to Devices, and remove the old computer. Then download and install Norton on the new device using the same account.

What should I do if my Norton subscription expires?

Your device will no longer be protected. You can renew by signing in to your Norton account and selecting a renewal plan. You can also enter a new product key if you purchased a renewal card.

Does Norton 360 work on Chromebooks?

No, Norton 360 does not have a native app for ChromeOS. However, you can use the Android app on Chromebooks that support Android apps, though functionality may be limited.

How do I contact Norton support if I have issues?

Visit Norton’s official support website (support.norton.com) for live chat, phone support, and community forums. You can also use the in-app “Get Support� option.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

More cards in this drawer

The whole Numbers and Powers drawer →