STEP 1: Restart your computer
- Exit all programs.
- Restart your computer.
STEP 2: Run LiveUpdate
- Start Norton.
If you see the My Norton window, next to Device Security, click .
- In the Norton main window, click .
Run LiveUpdate until no further updates are available for Norton.
- When the LiveUpdate finishes, exit all programs and restart your Mac.
If the problem persists, go to step 3.
STEP 3: Uninstall Norton
- On your Mac, click the Finder icon in the dock, and then click in the left pane under Favorites section.
- Find the Norton application icon, and drag it to the or .
- Click .
- When prompted, type your administrator account password, and then click .
- In the window that appears, click .
- When prompted, type your administrator account password, and then click .
- Click .
STEP 4: Download Norton device security
Before you download the latest installer setup file, make sure that you delete all the older installer setup files available in the Downloads folder.
- Sign in to your account.
- Type in your email address and password for Norton, and click .
- In the My Norton portal, click .
- In the Get Started page, click .
- When the download finishes, double-click the file that you downloaded to launch the Norton installer.
- Before you install Norton, click to read the product license agreement.
- Depending on your operating system, select one of the following:
Install Norton device security on macOS 10.15.x (Catalina) or later
- Click .
- In some cases, Norton provides you an alert to join the Norton Community Watch that collects information about potential security risks from your computer and sends the information to Norton for analysis. Do any one of the following:
- Click to enable the Norton Community Watch on your Norton product.
- Click to join the Norton Community Watch later.
You can click
to know more about Norton Community Watch. - When prompted, type your Mac administrator user account password, and then click .
- Click Restart.
- After you restart your Mac, in the Norton installation window, click .
- If you see the System Extension Blocked alert, click .
- In the Security & Privacy window, click the lock icon at the bottom.
- When prompted, type your administrator account password, and then click .
- Click corresponding to the Norton message, navigate back to the Norton installation window, and then click .
If you do not see the Allow button, then close and reopen the Security & Privacy window to view the Allow button.
- In the Norton installation window, click , and then click to allow Norton to monitor all the network activities and block malicious websites from accessing your Mac.
- In the Norton installation window, click to allow Norton to access your disk for better protection.
- In the Security & Privacy window, ensure that the Norton System Extension option is enabled. Navigate back to the Norton installation window and click .
Install Norton device security on macOS High Sierra 10.13.x to macOS Mojave 10.14.x
- Click .
- In some cases, Norton provides you an alert to join the Norton Community Watch that collects information about potential security risks from your computer and sends the information to Norton for analysis. Do any one of the following:
- Click to enable the Norton Community Watch on your Norton product.
- Click to join the Norton Community Watch later.
You can click
to know more about Norton Community Watch. - When prompted, type your Mac administrator user account password, and then click .
- In the Norton installation window, click or .
- Do any one of the following:
- Click corresponding to the Symantec message.
- If you have multiple software or vendor installed on your Mac that requires your authorization, then you see message instead of message. In that case, click , select in the list, and then click .
If you do not see the Allow button, then close and reopen the Security & Privacy window to view the Allow button.
- In the Norton Security installation window. click .
- Click to complete the installation process.
Install Norton device security on Mac OS X 10.10.x (Yosemite) to OS X 10.12.x (Sierra)
- Click .
- In some cases, your Norton product provides you an alert to join the Norton Community Watch that collects information about potential security risks from your computer and sends the information to Norton for analysis. Do any one of the following:
- Click to enable the Norton Community Watch on your Norton product.
- Click to join the Norton Community Watch later.
You can click
to know more about Norton Community Watch. - When prompted, type your Mac administrator user account password, and then click .
- When the installation completes, click . Your product installation completes after you restart your Mac.
Source : Official Norton Brand
Editor by : BEST Antivirus KBS Team