Norton Internet Security 2013 Error: 8506, 421

NIS 2013 “Autofix” failing and generating

Norton Internet Security
Error: 8506, 421
Windows 7 Home Premium
Norton Autofix Results: 0 item(s)

Please go back to NIS 2012 by following these instructions. If you think 2013 has been updated enough for you, you can allow the upgrade.

Follow these steps:

Download the Norton Removal Tool from here

Download the NIS 2012 from

If you use Identity Safe, backup/export your data. Do this in CSV format

Uninstall your Norton product with Windows control panel.


Run the Norton Removal Tool.


Run the NIS 2012 download..

Run LiveUpdate (rebooting as requested) until LiveUpdate responds “no updates found”.

If you use Identity Safe, try to log in. If it works you are done. If it does not, import your Identity Safe data.

Be sure to go into Settings – Computer – Updates and turn off the option for Automatic Download of new version.

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