Norton Antivirus installation error code 8504 can occur due to various reasons, including conflicts with other security software, incomplete installations, or corrupt system files. To fix this error, you can follow these steps:
Solution 1: Run the Norton Remove and Reinstall Tool
Download the Norton Remove and Reinstall Tool from the official Norton website.
Save the file to your desktop or another easily accessible location.
Double-click the downloaded file to run the tool.
Read the license agreement and click "Agree."
Click "Remove & Reinstall."
Follow the on-screen instructions to complete the removal and reinstallation process.
Once the process is complete, restart your computer.
After the restart, open Norton Antivirus and check if the error is resolved.
Solution 2: Remove Conflicting Security Software
If you have any other security software installed on your computer, it may conflict with Norton Antivirus. You should uninstall any third-party security software before installing Norton. Here's how:
Press "Windows + R" on your keyboard to open the Run dialog box.
Type "appwiz.cpl" and press Enter. This will open the Programs and Features window.
Locate the other security software you have installed, right-click it, and select "Uninstall" or "Remove."
Follow the on-screen instructions to uninstall the software.
Restart your computer after the uninstallation is complete.
Solution 3: Check for Windows Updates
Outdated Windows can sometimes cause compatibility issues. Make sure your Windows operating system is up to date:
Press "Windows + I" on your keyboard to open the Settings app.
Click on "Update & Security."
Click "Check for updates" and let Windows check for and install any available updates.
After the updates are installed, restart your computer.
Solution 4: Use Norton's Power Eraser
Norton Power Eraser is a tool designed to remove threats and repair common problems with Norton products. Here's how to use it:
Download Norton Power Eraser from the official Norton website.
Save the file to your desktop or another easily accessible location.
Double-click the downloaded file to run Norton Power Eraser.
Accept the license agreement and click "Next."
Click "Run LiveUpdate" to make sure you have the latest version of Norton Power Eraser.
Click "Start Scan."
The tool will scan your system for threats and issues. Follow the on-screen instructions to resolve any problems found.
Restart your computer.
Solution 5: Contact Norton Support
If the error persists after trying the above solutions, it's advisable to contact Norton Support. They can provide you with personalized assistance and further troubleshooting steps.
Hope This Works,
Peter