Add or remove items from the Windows Defender allowed list
If you trust software that Windows Defender has detected, you can stop Windows Defender from alerting you to risks that the software might pose to your privacy or your computer. To stop being alerted, you need to add the software to the Windows Defender allowed list. If you decide that you want to monitor the software again later, you can remove it from the Windows Defender allowed list at any time.
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The next time Windows Defender alerts you about the software, on the Action menu in the Alert dialog box, click Always Allow.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
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Open Windows Defender by clicking the Start button 
, clicking All Programs, and then clicking Windows Defender.
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Click Tools, and then click Allowed items.
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Select the item that you want to monitor again, and then click Remove From List.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
Warning
Do not allow software with severe or high alert ratings to run on your computer because it can put your privacy and the security of your computer at risk.
