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Fix internet connectivity problems after installing Norton device Security

Internet connectivity problem may occur due to various reasons. It can happen due to a temporary problem from your service provider or a problem in your computer that is caused by the firewall. To fix this problem, we need to identify the exact cause.

If you cannot access a specific website but can access other websites, read Fix problems accessing a specific website.

Windows

Before you follow the below instructions, do the following:

  • If Norton Secure VPN is connected, disconnect and connect again.

  • If Norton Secure VPN is disconnected, connect and disconnect.

Temporarily turn off your firewall and check the connectivity

  1. Open your Norton device security product.

    If you see the My Norton window, next to Device Security, click Open.

  2. Click Settings.

  3. In the Settings window, click Firewall.

  4. On the General Settings tab, next to Smart Firewall, click the slider to turn it Off.

  5. In the Protection Alert dialog box, from the drop-down menu, click Apply, and then select Permanently.

  6. Click OK.

  7. Check if you can connect to the Internet by accessing www.norton.com.

  8. Repeat steps 1 to 4 and turn on Smart Firewall.

    Make sure that you turn on Smart Firewall before you follow the next steps.

Depending on whether you can access the Norton website after you turned off the firewall, select one of the following:

I can access the Norton website only after I disable the firewall

If you can access the Internet after you disable the firewall, then you need to reset the firewall rules. For more information read Fix the connectivity problem if you can connect to the Internet only after disabling the Norton firewall.

I cannot access the Norton website even after I disable the firewall

If you cannot connect to the Internet even after you disable the firewall, uninstall and reinstall your Norton product. For more information, read Fix the connectivity problem if you cannot connect even after disabling the Norton firewall.

Some applications or browsers cannot access the Internet

If you can connect to the Internet but your web-enabled application does not connect to the Internet, then you need to modify the firewall program rules. For more information, read Fix problem connecting to the Internet from a web-enabled program.

Mac

STEP 1

Restart your Mac

  1. Close all the open applications and restart your Mac.

If the problem persists, then follow the below steps:

STEP 2

Unistall Norton device security

Before you follow the below steps, ensure that you close your Norton application, if it is already opened.

  1. On your Mac, click the Finder icon in the dock, and then click Applications in the left pane under Favorites section.
  2. Find the Norton application icon and drag it to the Trash.

  3. Do one of the following based on your macOS version:

    • If you have macOS 10.15.x (Catalina) or later version, click Continue to allow your Norton product to remove the system extension.

    • If you have macOS 10.14.x (Mojave) or earlier version, go to step 4.

  4. When prompted, type your administrator account password, and then click OK.

  5. In the window that appears, click Uninstall.

  6. When prompted, type your administrator account password, and then click Install Helper.

  7. Click Restart Now.

STEP 3

Remove Norton extensions from your Mac

  1. On your Home desktop window, click the Apple menu icon at the top-left corner.
  2. Click System Preferences > Network.

  3. In the Network window, select the Norton product, and then click the minus (-) sign at the bottom.

  4. Click Apply and then close the Network window.

  5. Restart your Mac.

STEP 4

Download and run RemoveNortonMacFiles as an administrator

RemoveNortonMacFiles removes all the folders that Norton installers created, and all the files within those folders including any that you have created.

  1. Download the RemoveNortonMacFiles.zip file.

  2. Click the Finder icon in the Dock.
  3. In the Finder window, click Downloads in the left pane under Favorites.

  4. Do one of the following:

    • If you downloaded the file using Safari browser, open the RemoveNortonMacFiles folder.

    • If you downloaded the file using the Mozilla Firefox or Google Chrome browsers, double-click the RemoveNortonMacFiles.zip file to expand it, and then open the RemoveNortonMacFiles folder.

  5. In the RemoveNortonMacFiles folder, control-click the RemoveNortonMacFiles.command file, and then click Open with > Terminal (default).

    To run this tool, you must be logged on with an Administrator account and a non-blank password.

  6. In the Terminal window, type your administrator password, and then press return.

    When you type your password, no characters appear.

  7. To remove all Norton files and folders, type 1.

    If you want to quit RemoveNortonMacFiles without removing any files, type 2.

  8. Press return.

    RemoveNortonMacFiles tool removes all of the Norton files.

  9. When the RemoveNortonMacFiles tool finishes removing the Norton files, in the Terminal window, type y, and press return to restart your Mac.

    Before you press return, make sure that you save your work in other open applications.

STEP 5

Download and install 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.

To install Norton for Mac 8.x or later, you need to have Mac OS X 10.10.x or later.

  1. Sign in to your account.

  2. Type in your email address and password for Norton, and click Sign In.

    If you do not remember your Norton account password, then click Forgot password? and follow the on-screen instructions to recover your lost password.

  3. In the My Norton portal, click Download.

  4. In the Get Started page, click Agree and Download.

  5. When the download finishes, double-click the file that you downloaded to launch the Norton installer.

  6. Before you install Norton, click Norton License Agreement to read the product license agreement.

  7. Depending on your operating system, select one of the following:

Install Norton device security on macOS 10.15.x (Catalina) or later

  1. Click Install.

  2. 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 Join Now to enable the Norton Community Watch on your Norton product.

    • Click Maybe Later to join the Norton Community Watch later.

    You can click Learn More to know more about Norton Community Watch.

  3. When prompted, type your Mac administrator user account password, and then click Install Helper.

  4. Click Restart.

  5. After you restart your Mac, in the Norton installation window, click Open Preferences.

  6. If you see the System Extension Blocked alert, click Open Security Preferences.

  7. In the Security & Privacy window, click the lock icon at the bottom.

  8. When prompted, type your administrator account password, and then click Unlock.

  9. Click Allow corresponding to the Norton message, navigate back to the Norton installation window, and then click Continue.

    If you do not see the Allow button, then close and reopen the Security & Privacy window to view the Allow button.

    Allow System Extensions
  10. In the Norton installation window, click Continue, and then click Allow to allow Norton to monitor all the network activities and block malicious websites from accessing your Mac.

    Allow Network Monitoring
  11. In the Norton installation window, click Open Preferences to allow Norton to access your disk for better protection.

  12. In the Security & Privacy window, ensure that the Norton System Extension option is enabled. Navigate back to the Norton installation window and click Complete.

    Allow Full Disk Access

Install Norton device security on macOS High Sierra 10.13.x to macOS Mojave 10.14.x

  1. Click Agree & Install.

  2. 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 Join Now to enable the Norton Community Watch on your Norton product.

    • Click Maybe Later to join the Norton Community Watch later.

    You can click Learn More to know more about Norton Community Watch.

  3. When prompted, type your Mac administrator user account password, and then click Install Helper.

  4. In the Norton installation window, click Open Now or Click here.

  5. Do any one of the following:

    • Click Allow corresponding to the Symantec message.

    • If you have multiple software or vendor installed on your Mac that requires your authorization, then you see Some system software was blocked from loading message instead of Symantec message. In that case, click Allow, select Symantec in the list, and then click OK.

    If you do not see the Allow button, then close and reopen the Security & Privacy window to view the Allow button.

  6. In the Norton Security installation window. click Continue.

  7. Click Restart to complete the installation process.

Install Norton device security on Mac OS X 10.10.x (Yosemite) to OS X 10.12.x (Sierra)

  1. Click Agree & Install.

  2. 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 Join Now to enable the Norton Community Watch on your Norton product.

    • Click Maybe Later to join the Norton Community Watch later.

    You can click Learn More to know more about Norton Community Watch.

  3. When prompted, type your Mac administrator user account password, and then click Install Helper.

  4. When the installation completes, click Restart. Your product installation completes after you restart your Mac.

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文件識別碼 (ID): v65845544
作業系統: Mac;Windows
上次修改時間: 2023/12/21