Update configure-block-at-first-sight-windows-defender-antivirus.md

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Denise Vangel-MSFT
2020-05-12 11:59:23 -07:00
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@ -22,7 +22,7 @@ ms.custom: nextgen
- [Microsoft Defender Advanced Threat Protection (Microsoft Defender ATP)](https://go.microsoft.com/fwlink/p/?linkid=2069559)
Block at first sight is a feature of next-generation protection that provides a way to detect and block new malware within seconds. This protection is enabled by default when certain prerequisite settings are also enabled. In most cases, these prerequisite settings are also enabled by default, so the feature is running without any intervention.
Block at first sight provides a way to detect and block new malware within seconds. This protection is enabled by default when certain prerequisite settings are also enabled. In most cases, these prerequisite settings are also enabled by default, so the feature is running without any intervention.
You can [specify how long the file should be prevented from running](configure-cloud-block-timeout-period-windows-defender-antivirus.md) while the cloud-based protection service analyzes the file. And, you can [customize the message displayed on users' desktops](https://docs.microsoft.com/windows/security/threat-protection/windows-defender-security-center/wdsc-customize-contact-information) when a file is blocked. You can change the company name, contact information, and message URL.