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Merged PR 15081: add more pre-reqs for block file

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add more pre-reqs for block file
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Joey Caparas
2019-04-03 18:55:41 +00:00
parent da677d509e d648846dfb
commit 892e1f412a
1 changed files with 9 additions and 3 deletions
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12
windows/security/threat-protection/windows-defender-atp/respond-file-alerts-windows-defender-advanced-threat-protection.md
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@ -15,7 +15,6 @@ manager: dansimp
audience: ITPro
ms.collection: M365-security-compliance
ms.topic: article
ms.date: 04/24/2018
---
# Take response actions on a file
@ -109,13 +108,17 @@ You can roll back and remove a file from quarantine if you’ve determined that
You can prevent further propagation of an attack in your organization by banning potentially malicious files or suspected malware. If you know a potentially malicious portable executable (PE) file, you can block it. This operation will prevent it from being read, written, or executed on machines in your organization.
>[!IMPORTANT]
>- This feature is available if your organization uses Windows Defender Antivirus and Cloud–based protection is enabled. For more information, see [Manage cloud–based protection](../windows-defender-antivirus/deploy-manage-report-windows-defender-antivirus.md). </br></br>
>- This feature is available if your organization uses Windows Defender Antivirus and Cloud–based protection is enabled. For more information, see [Manage cloud–based protection](../windows-defender-antivirus/deploy-manage-report-windows-defender-antivirus.md).
>- The Antimalware client version must be 4.18.1901.x or later.
>- This feature is designed to prevent suspected malware (or potentially malicious files) from being downloaded from the web. It currently supports portable executable (PE) files, including _.exe_ and _.dll_ files. The coverage will be extended over time.
>- This response action is available for machines on Windows 10, version 1703 or later.
>- The allow or block function cannot be done on files if the file's classification exists on the device's cache prior to the allow or block action.
>[!NOTE]
> The PE file needs to be in the machine timeline for you to be able to take this action.
>- There may be a couple of minutes of latency between the time the action is taken and the actual file being blocked.
### Enable the block file feature
Before you can block files, you'll need to enable the feature.
@ -149,6 +152,9 @@ Before you can block files, you'll need to enable the feature.
When the file is blocked, there will be a new event in the machine timeline.</br>
>[!NOTE]
>-If a file was scanned before the action was taken, it may take longer to be effective on the device.
**Notification on machine user**:</br>
When a file is being blocked on the machine, the following notification is displayed to inform the user that the file was blocked: