Other products

Error: "8504,104"

This error can be caused by another security product or due to a failed install when the product is being upgraded to a newer version. To resolve this issue, Remove any non-Norton security product from your computer.

If the problem still persists, then restart the computer.

STEP 1

Restart the computer

  1. Exit all programs.

  2. Restart the computer.

    If the problem persists, reinstall Norton.

STEP 2

Run the Norton Remove and Reinstall tool

    If you have Norton Family installed, uninstall it before you run the Norton Remove and Reinstall tool.

  1. Download the Norton Remove and Reinstall tool.

    Save the file to the Windows desktop. On some browsers, the file is automatically saved to its default location.

  2. To open the Downloads window in your browser, press the Ctrl + J key.

  3. Double-click the NRnR icon.

  4. Read the license agreement, and click Agree.

  5. Click Advanced Options.

  6. Click Remove Only.

  7. Click Remove.

  8. Click Restart Now.

    After the computer restarts, follow the on-screen instructions to reinstall Norton. If you have any issues reinstalling, read Download Norton on your device.

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DOCID: v62545568
Operating System: Windows
Last modified: 07/30/2020