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Error: "8504,5"
Applicable for: Windows
To resolve this problem, restart the computer. If the problem persists, uninstall and reinstall Norton.
Restart the computer
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Exit all programs.
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Restart the computer.
If the problem persists, reinstall Norton.
Download and run the Norton Remove and Reinstall tool
If you have Norton Family installed, uninstall it before you run the Norton Remove and Reinstall tool.
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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.
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To open the Downloads window in your browser, press the Ctrl + J key.
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Double-click the NRnR icon.
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Read the license agreement, and click Agree.
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Click Remove & Reinstall.
You may see the Remove button if your Norton product is from your service provider.
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Click Continue or Remove.
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Click Restart Now.
After the computer restarts, follow the on-screen instructions to reinstall your Norton. If you have any issues reinstalling Norton, read Reinstall Norton after you run the Norton removal tool.
Last modified: 08/05/2024
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