How to Troubleshoot Norton Antivirus Error 451?

Norton, the well-known online security solution provider offers a great range of products for both home and business PCs. It offers endpoint protection against viruses that tend to harm your computer system and steal your confidential information. Once installed, the antivirus runs in the background scanning your software and applications. The antivirus also ensures safe browsing; means you will be see a warning or a message while visiting a website that is infected with the viruses or have malicious applications. While using Norton antivirus product, you may encounter a number of errors and one of the common error is 451. This error can occur in Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows ME and Windows 2000. Before we tell you the reason why this error occurs, let’s have a look over the symptoms of error 451:

  1. “Error 451” appears and crashes the active program window
  2. Your PC frequently crashes with Error 451 when running the same program
  3. “Norton Antivirus Email Error 451” is displayed
  4. Windows runs sluggishly and responds slowly to mouse or keyboard input
  5. Your computer periodically “freezes” for a few seconds at a time

Now, have a look over the reasons that cause this error to happen:

  1. Corrupt downloading of your Norton antivirus
  2. Incomplete installation of your Norton antivirus
  3. Virus or malware infection in Windows system files
  4. Virus infection in the program files associated with the Norton antivirus
  5. A program has mistakenly deleted or removed a Norton antivirus file

The error message may appear during program installation. To troubleshoot this issue, following the below mentioned steps:

  1. Repair all the registry entries associated with your Norton antivirus
  2. Begin an instant scan of your entire computer system
  3. Remove all the temporary files, junk files and folders using disk cleanup
  4. Make sure your Pc drivers are updated to the latest version
  5. Use Windows System Restore to “undo” recent system changes
  6. Uninstall and then reinstall the Norton antivirus program Visit Norton.com/setup linked to this particular error
  7. Run Windows System File Checker (sfc /scannow)
  8. Make sure that your operating system is updated to the latest version
  9. Now, perform a clean installation of Windows

Hope the information was useful!

Emily Brown is an experienced technical writer with huge knowledge of the gadgets, web browsers and software. She shares her knowledge with the readers by writing articles and blogs. You can check all the latest articles on her blog.

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