Know How to Get Rid of Norton Error 8506, 421?

Norton antivirus technical support recognizes infection and coming dangers with the help of marks and heuristics. Its few features have possessed best positioning in the market and people mind like Norton bolster, Norton web Security, Norton 360 Premier version (PE), Norton versatile security, Norton tablet security, etc. Norton antivirus wound up well known in the market in light of two reasons; one is it’s propelling highlights, and also, it has a simple establishment process.

However, some users are reporting that they are facing an error on their Norton product- it is Norton Error 8506. It happens because of corrupt Program installation. So for the user’s convenience, we are presenting a simple process to get rid of Norton antivirus product Error 8506. For more details, visit

Know about the Symptoms of this error:-

The typical symptoms of this 8506, 421 error areas:

  • Crashes Active Windows Program.
  • PC impacts with error 8506, 421 continuously.
  • Error 8506, 421” message will appear in the center of your computer screen.
  • Windows start running sluggishly and very slow response of your Keyboard and mouse.
  • The computer system will freezes for a few seconds too often.

Know about the Causes of Error 8506, 421:- 

  • Incomplete or incorrect installation and corrupt downloading of Norton Internet security program.
  • Wrongdoing program Registry during installation or uninstallation of antivirus software.
  • Spyware or Malware infection may have corrupted Norton security-related files or Windows Files.
  • Mistakenly or maliciously files Deletion of Norton Internet Security program.

Know How to intercept Error 8506, 421 

  • Troubleshoot all the possible causes of this error.
  • Scan your computer system for possible errors 

Troubleshooting Solutions to Solve Norton Error 8506, 421:- 

You can be fixed easily Error 8506, 421 through troubleshooting methods which are the given below.


  • Recheck or Repair the Registry Entries files.
  • Clean out all the temporary and junk files with the help of Disk Cleanup.
  • Conduct a Full Malware Scan of Your PC
  • Update Your PC Device Drivers
  • You can use the Windows System Restore option to “Undo” latest system changes
  • Uninstall and Reinstall the Norton Internet Security Program Associated with Error 8506, 421
  • Run Windows System File Checker (“SFC /scan now”)
  • Install All Available Windows Updates
  • Perform a Clean Installation of Windows


Steps to Access Norton 360 Remove and Reinstall tool:-

  • Go to Norton Official Website, download the Norton 360 Remove and Reinstall tool.
  • Save the file to your suitable location on your computer system.
  • Go to Downloads window in your browser (shortcut Ctrl + J key) and open it.
  • Double-click on the NRnR Symbol to start it.
  • Read all the license agreements, and click on the “Agree” option.
  • Click on the “Advanced Options” and select “Remove” only.
  • Click on the “Remove & Restart.”
  • Wait until the process is finishing, restart your computer.
  • After the computer restarts, follow the given on-screen instructions to reinstall Norton product on your computer system.

Steps to reinstall Norton program:- 

  • Before starting the installation process, confirm the system requirement for Norton.
  • See your Norton product Key Code at the back side of the retail card, because you will need the Norton Keycode to activate the subscription.
  • Recommendation- If you have a Norton antivirus security program CD driver then insert it into the CD drive to install the software.
  • If not then you can download the installer from the Norton official website.
  • After completing installer downloading, double-click on the downloaded file to start the installation.
  • Open Norton program saved file, select your suitable language along with the country.
  • Enter your Norton product Keycode and go to the installation step.
  • You need to make a shortcut of this application to your desktop.
  • After confirming all changes, click on the “Next.”
  • Click on the “Agree and Install” to complete the installation process.
  • Restart your computer and check your Norton program performance.

To get more information about Norton product advanced features, connect with Norton Customer Support. If you have bought a Norton product key, then for activation go to

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