Reasons why you face Norton Activation Error?

Expired Derivative License: This error is faced when the subscription duration of your Norton product has expired or the due date has lapsed. You might need to renew your product. Activation Key Not Recognized: The activation key you are using has already been used or it is an invalid activation key. Please check again and re-enter your activation key. So, now that we have learned the reasons behind the Norton Activation Error and the Norton Antivirus Setup Error, let us explore the ways to resolve these issues.

First Method: Run the Norton Remove and Reinstall Tool

You need to Download the Norton Remove and Reinstall tool from the official Norton website followed by double-clicking on the downloaded file to run the tool. Once opened, click on Agree to accept the license agreement. Afterward, proceed by clicking on Remove & Reinstall. Now, you need to click on either Continue or Remove, depending on your version of Windows OS. Once the above steps are complete, you need to Restart your device to make the changes permanent.

This must have fixed the popup of Norton Error Message 8504. If not, proceed with the 2nd method.

Second Method: Update Norton Antivirus Software

In this method, you need to start by Opening your installed Norton Antivirus software. In the software, locate and click on the settings icon. Now, select "Automatic LiveUpdate" and click on the "Apply" icon. Wait for a while till the update is complete and then restart your device. If this method could not fix your Norton Error Message 8504 either, proceed with the next method.

Third Method: Remove conflicting software

Start with opening the Control Panel followed by clicking on "Programs" and the "Programs and Features". Find any other security application running in the background which is conflicting with the Norton Installation on your device. Once you have found the conflicting software, right-click on the application and "Uninstall" the application. Restart your device to make the changes permanent. This must have resolved your Norton Error Message 8504.

Fourth Method: Check for malware and viruses

This is a very basic step that checks whether malware or a virus is conflicting with Norton Installation on your device. You need to run a Full system scan with your Norton software. If any such malware or virus programs are encountered, follow the upcoming prompts to remove the infection. If none of the above-mentioned methods worked for the removal of Norton Error Message 8504, it is time that you seek help from Contact Norton Support. Highly trained Norton technical experts are only a call away to help you troubleshoot steps or help you resolve the issue.