diff --git a/windows/security/threat-protection/microsoft-defender-atp/troubleshoot-np.md b/windows/security/threat-protection/microsoft-defender-atp/troubleshoot-np.md index 82fcbb7ca7..79cdbc3b60 100644 --- a/windows/security/threat-protection/microsoft-defender-atp/troubleshoot-np.md +++ b/windows/security/threat-protection/microsoft-defender-atp/troubleshoot-np.md @@ -11,7 +11,7 @@ ms.localizationpriority: medium audience: ITPro author: dansimp ms.author: dansimp -ms.date: 03/27/2019 +ms.date: 01/26/2021 ms.reviewer: manager: dansimp ms.technology: mde @@ -24,14 +24,13 @@ ms.technology: mde **Applies to:** -* [Microsoft Defender for Endpoint](https://go.microsoft.com/fwlink/p/?linkid=2146631) - -* IT administrators +- [Microsoft Defender for Endpoint](https://go.microsoft.com/fwlink/p/?linkid=2146631) +- IT administrators When you use [Network protection](network-protection.md) you may encounter issues, such as: -* Network protection blocks a website that is safe (false positive) -* Network protection fails to block a suspicious or known malicious website (false negative) +- Network protection blocks a website that is safe (false positive) +- Network protection fails to block a suspicious or known malicious website (false negative) There are four steps to troubleshooting these problems: @@ -45,11 +44,11 @@ There are four steps to troubleshooting these problems: Network protection will only work on devices with the following conditions: >[!div class="checklist"] -> * Endpoints are running Windows 10 Pro or Enterprise edition, version 1709 or higher. -> * Endpoints are using Microsoft Defender Antivirus as the sole antivirus protection app. [Using any other antivirus app will cause Microsoft Defender AV to disable itself](../microsoft-defender-antivirus/microsoft-defender-antivirus-compatibility.md). -> * [Real-time protection](../microsoft-defender-antivirus/configure-real-time-protection-microsoft-defender-antivirus.md) is enabled. -> * [Cloud-delivered protection](../microsoft-defender-antivirus/enable-cloud-protection-microsoft-defender-antivirus.md) is enabled. -> * Audit mode is not enabled. Use [Group Policy](enable-network-protection.md#group-policy) to set the rule to **Disabled** (value: **0**). +> - Endpoints are running Windows 10 Pro or Enterprise edition, version 1709 or higher. +> - Endpoints are using Microsoft Defender Antivirus as the sole antivirus protection app. [See what happens when you are using a non-Microsoft antivirus solution](../microsoft-defender-antivirus/microsoft-defender-antivirus-compatibility.md). +> - [Real-time protection](../microsoft-defender-antivirus/configure-real-time-protection-microsoft-defender-antivirus.md) is enabled. +> - [Cloud-delivered protection](../microsoft-defender-antivirus/enable-cloud-protection-microsoft-defender-antivirus.md) is enabled. +> - Audit mode is not enabled. Use [Group Policy](enable-network-protection.md#group-policy) to set the rule to **Disabled** (value: **0**). ## Use audit mode @@ -61,9 +60,9 @@ You can enable network protection in audit mode and then visit a website that we Set-MpPreference -EnableNetworkProtection AuditMode ``` -1. Perform the connection activity that is causing an issue (for example, attempt to visit the site, or connect to the IP address you do or don't want to block). +2. Perform the connection activity that is causing an issue (for example, attempt to visit the site, or connect to the IP address you do or don't want to block). -1. [Review the network protection event logs](network-protection.md#review-network-protection-events-in-windows-event-viewer) to see if the feature would have blocked the connection if it had been set to **Enabled**. +3. [Review the network protection event logs](network-protection.md#review-network-protection-events-in-windows-event-viewer) to see if the feature would have blocked the connection if it had been set to **Enabled**. If network protection is not blocking a connection that you are expecting it should block, enable the feature. @@ -75,6 +74,8 @@ You can enable network protection in audit mode and then visit a website that we If you've tested the feature with the demo site and with audit mode, and network protection is working on pre-configured scenarios, but is not working as expected for a specific connection, use the [Windows Defender Security Intelligence web-based submission form](https://www.microsoft.com/wdsi/filesubmission) to report a false negative or false positive for network protection. With an E5 subscription, you can also [provide a link to any associated alert](../microsoft-defender-atp/alerts-queue.md). +See [Address false positives/negatives in Microsoft Defender for Endpoint](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-atp/defender-endpoint-false-positives-negatives). + ## Exclude website from network protection scope To allow the website that is being blocked (false positive), add its URL to the [list of trusted sites](https://blogs.msdn.microsoft.com/asiatech/2014/08/19/how-to-add-web-sites-to-trusted-sites-via-gpo-from-dc-installed-ie10-or-higher-ie-version/). Web resources from this list bypass the network protection check. @@ -89,16 +90,17 @@ When you report a problem with network protection, you are asked to collect and cd c:\program files\windows defender ``` -1. Run this command to generate the diagnostic logs: +2. Run this command to generate the diagnostic logs: ```PowerShell mpcmdrun -getfiles ``` -1. By default, they are saved to C:\ProgramData\Microsoft\Windows Defender\Support\MpSupportFiles.cab. Attach the file to the submission form. +3. By default, they are saved to C:\ProgramData\Microsoft\Windows Defender\Support\MpSupportFiles.cab. Attach the file to the submission form. ## Related topics -* [Network protection](network-protection.md) -* [Evaluate network protection](evaluate-network-protection.md) -* [Enable network protection](enable-network-protection.md) +- [Network protection](network-protection.md) +- [Evaluate network protection](evaluate-network-protection.md) +- [Enable network protection](enable-network-protection.md) +- [Address false positives/negatives in Defender for Endpoint](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-atp/defender-endpoint-false-positives-negatives)