How to open Defender with pre-installed Win8?

  
                                    

My computer is Win8, which is pre-installed in the notebook. Click on the Windows Defender software under the Metro interface. Tip:

“Windows Defender is closed and will not monitor your computer.”

Can't open Windows defender, what should I do?

Generally, this is a pre-installed system with anti-virus software installed, so Windows Defender is not needed, sometimes it will cause conflicts. If you have to play Windows Defender, you can uninstall the pre-installed anti-virus software. Take Y470 as an example. The pre-installed anti-virus software is Mcafee.

Step 1: Uninstall Mcafee in the control panel, as shown below:

Step 2: After restarting the machine according to the prompts, go to “Control Panel"“System Security""Operation Center""Operation" "Security" Click “Enable Now”

Windows defender. When enabled, the “Update Now button will be displayed. The Windows defender is now open:

As shown below:

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