I recently purchased a computer with Windows 8 but Norton security came preloaded as a trial. Now that the trial is finished I want to enable Windows defender and delete Norton, I can't seem to do this. Any answers for this fix?
closed as not constructive by nerdwaller, Canadian Luke, Renan, TFM, Mokubai Feb 23 '13 at 10:55
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NOTE: It's always best to uninstall one security software before installing/activating another.
Open the control panel and click "Uninstall a Program".
Find Nortons in the list and select it. Then click "Uninstall/Change".
Activate Windows Defender
Press Win+f and type "Windows Defender". Make sure you're searching under "Apps" in the right panel.
Open Windows Defender. Switch to the "Settings" tab and select "Administrator" from the left pane. Check the checkbox titled "Turn on Windows Defender".
Click "Save Changes".
If you don't have any other security software installed and Windows Defender is off you can do it this was too:
Open the Control Panel and Navigate to
Sometimes it is necessary to set the value
Note, you must take ownership of this key and give your user account full control over this key.