question

RaphaelHuber-1659 avatar image
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RaphaelHuber-1659 asked SunnyQi-MSFT commented

can't delete windows defender exceptions

hi all my defender has some trojans registred as exceptions for the scan. so if one of these trojans get on my system, it won't be handled by windos defender... i tried many ways to delet these entries, but after i leave and get back to the exceptions-list, they all are back in the list again. what can i do? is there a way to reset the windows defender completely?

windows-10-general
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Hi,

Just checking in to see if the information provided was helpful.

If yes, you may accept useful reply as answer, if not, welcome to feedback.

Best Regards,
Sunny

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Hi,

You could accept the useful reply as answer if you want to end this thread up.

If there is anything else we can do for you, please feel free to post in the forum.

Best Regards,
Sunny

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SSengupta-4080 avatar image
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SSengupta-4080 answered

Click on the Start button and give a right-click on the Command Prompt.
Click the Run as administrator option from the displayed list.
Type the command ‘netsh advfirewall reset’ and press the Enter key.
Now, the firewall settings will get reset to its default settings.

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Press the Windows + R shortcut keys to open the Run panel.
Type ‘wf.msc’ in the text box to open the Windows Defender Firewall with Advanced Security.
Give a right-click on the Windows Defender Firewall tab that is located on the left-side panel.
Select the Restore Default Policy option

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SunnyQi-MSFT avatar image
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SunnyQi-MSFT answered

Hi,

Thanks for posting in Q&A platform.

Please try the following methods to reset Windows Defender Firewall.

1: Restore or Reset Default Windows Defender Firewall Settings in Windows Security

Click Start and insert windows security to open Windows Security.

Click on Firewall & network protection.

Scroll down, find, and click on Restore firewalls to default.

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2: Restore or Reset Default Windows Defender Firewall Settings in Control Panel

Open Control Panel.

Click on Windows Defender Firewall.

Click on Restore defaults.

Click on Restore defaults a second time.

Click Yes to confirm.

79500-image-2.jpg

3: Restore or Reset Default Windows Defender Firewall Settings in Powershell or Command Prompt

Open PowerShell or the Command Prompt, and type in the following line and press Enter.

The Command Prompt should return OK, while PowerShell will return nothing, as shown in the screenshots below.

Command Prompt - netsh advfirewall reset

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PowerShell - (New-Object -ComObject HNetCfg.FwPolicy2).RestoreLocalFirewallDefaults()

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Here is an article for your reference:

How to Reset Windows Defender Windows 10
Please Note: Since the websites are not hosted by Microsoft, the links may change without notice. Microsoft does not guarantee the accuracy of this information.

Best Regards,
Sunny


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