Merge pull request #1377 from MicrosoftDocs/nextgen-updates

Manage the sources for Windows Defender Antivirus protection updates
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Thomas Raya
2019-10-18 17:04:53 -07:00
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@ -33,7 +33,7 @@ Keeping your antivirus protection up to date is critical. There are two componen
This article describes the *where* - how to specify where updates should be downloaded from (this is also known as the fallback order). See [Manage Windows Defender Antivirus updates and apply baselines](manage-updates-baselines-windows-defender-antivirus.md) topic for an overview on how updates work, and how to configure other aspects of updates (such as scheduling updates). This article describes the *where* - how to specify where updates should be downloaded from (this is also known as the fallback order). See [Manage Windows Defender Antivirus updates and apply baselines](manage-updates-baselines-windows-defender-antivirus.md) topic for an overview on how updates work, and how to configure other aspects of updates (such as scheduling updates).
> [!IMPORTANT] > [!IMPORTANT]
> Microsoft Defender Antivirus Security intelligence updates are delivered through Windows Update and starting Monday October 21, 2019, all security intelligence updates will be SHA-2 signed exclusively. Your devices must be updated to support SHA-2 in order to update the security intelligence. To learn more, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](https://support.microsoft.com/help/4472027/2019-sha-2-code-signing-support-requirement-for-windows-and-wsus). > Microsoft Defender Antivirus Security intelligence updates are delivered through Windows Update and starting Monday, October 21, 2019, all security intelligence updates will be SHA-2 signed exclusively. Your devices must be updated to support SHA-2 in order to update your security intelligence. To learn more, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](https://support.microsoft.com/help/4472027/2019-sha-2-code-signing-support-requirement-for-windows-and-wsus).
<a id="fallback-order"></a> <a id="fallback-order"></a>
@ -43,7 +43,7 @@ This article describes the *where* - how to specify where updates should be down
Typically, you configure endpoints to individually download updates from a primary source, followed by other sources in order of priority, based on your network configuration. Updates are obtained from sources in the order you specify. If a source is not available, the next source in the list is used. Typically, you configure endpoints to individually download updates from a primary source, followed by other sources in order of priority, based on your network configuration. Updates are obtained from sources in the order you specify. If a source is not available, the next source in the list is used.
When updates are published, some logic is applied to minimize the size of the update. In most cases, only the differences between the latest update and the update that is currently installed (this is referred to as the delta) on the device is downloaded and applied. However, the size of the delta depends on two main factors: When updates are published, some logic is applied to minimize the size of the update. In most cases, only the differences between the latest update and the update that is currently installed (this is referred to as the delta) on the device is downloaded and applied. However, the size of the delta depends on two main factors:
- the age of the last update on the device; and - The age of the last update on the device; and
- The source used to download and apply updates. - The source used to download and apply updates.
The older the updates on an endpoint, the larger the download will be. However, you must also consider download frequency as well. A more frequent update schedule can result in more network usage, whereas a less-frequent schedule can result in larger file sizes per download. The older the updates on an endpoint, the larger the download will be. However, you must also consider download frequency as well. A more frequent update schedule can result in more network usage, whereas a less-frequent schedule can result in larger file sizes per download.
@ -54,12 +54,12 @@ There are five locations where you can specify where an endpoint should obtain u
- [Windows Server Update Service](https://docs.microsoft.com/windows-server/administration/windows-server-update-services/get-started/windows-server-update-services-wsus) - [Windows Server Update Service](https://docs.microsoft.com/windows-server/administration/windows-server-update-services/get-started/windows-server-update-services-wsus)
- [System Center Configuration Manager](https://docs.microsoft.com/sccm/core/servers/manage/updates) - [System Center Configuration Manager](https://docs.microsoft.com/sccm/core/servers/manage/updates)
- [Network file share](https://docs.microsoft.com/windows-server/storage/nfs/nfs-overview) - [Network file share](https://docs.microsoft.com/windows-server/storage/nfs/nfs-overview)
- [Security intelligence updates for Windows Defender Antivirus and other Microsoft antimalware](https://www.microsoft.com/en-us/wdsi/defenderupdates) - [Security intelligence updates for Windows Defender Antivirus and other Microsoft antimalware](https://www.microsoft.com/en-us/wdsi/defenderupdates) (Your policy and registry might have this listed as Microsoft Malware Protection Center (MMPC) security intelligence, its former name.)
To ensure the best level of protection, Microsoft Update allows for rapid releases, which means smaller downloads on a frequent basis. The Windows Server Update Service, System Center Configuration Manager, and Microsoft security intelligence updates sources deliver less frequent updates. Thus, the delta can be larger, resulting in larger downloads. To ensure the best level of protection, Microsoft Update allows for rapid releases, which means smaller downloads on a frequent basis. The Windows Server Update Service, System Center Configuration Manager, and Microsoft security intelligence updates sources deliver less frequent updates. Thus, the delta can be larger, resulting in larger downloads.
> [!IMPORTANT] > [!IMPORTANT]
> If you have set security intelligence updates as a fallback source after Windows Server Update Service or Microsoft Update, updates are only downloaded from security intelligence updates when the current update is considered out-of-date. (By default, this is 14 consecutive days of not being able to apply updates from the WSUS or Microsoft Update services). > If you have set [Microsoft Malware Protection Center Security intelligence page](https://www.microsoft.com/security/portal/definitions/adl.aspx) (MMPC) updates as a fallback source after Windows Server Update Service or Microsoft Update, updates are only downloaded from security intelligence updates when the current update is considered out-of-date. (By default, this is 14 consecutive days of not being able to apply updates from the Windows Server Update Service or Microsoft Update services).
> You can, however, [set the number of days before protection is reported as out-of-date](https://docs.microsoft.com/windows/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus#set-the-number-of-days-before-protection-is-reported-as-out-of-date).<p> > You can, however, [set the number of days before protection is reported as out-of-date](https://docs.microsoft.com/windows/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus#set-the-number-of-days-before-protection-is-reported-as-out-of-date).<p>
> Starting Monday, October 21, 2019, security intelligence updates will be SHA-2 signed exclusively. Devices must be updated to support SHA-2 in order to get the latest security intelligence updates. To learn more, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](https://support.microsoft.com/help/4472027/2019-sha-2-code-signing-support-requirement-for-windows-and-wsus). > Starting Monday, October 21, 2019, security intelligence updates will be SHA-2 signed exclusively. Devices must be updated to support SHA-2 in order to get the latest security intelligence updates. To learn more, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](https://support.microsoft.com/help/4472027/2019-sha-2-code-signing-support-requirement-for-windows-and-wsus).
@ -71,7 +71,7 @@ Each source has typical scenarios that depend on how your network is configured,
|Microsoft Update | You want your endpoints to connect directly to Microsoft Update. This can be useful for endpoints that irregularly connect to your enterprise network, or if you do not use Windows Server Update Service to manage your updates.| |Microsoft Update | You want your endpoints to connect directly to Microsoft Update. This can be useful for endpoints that irregularly connect to your enterprise network, or if you do not use Windows Server Update Service to manage your updates.|
|File share | You have non-Internet-connected devices (such as VMs). You can use your Internet-connected VM host to download the updates to a network share, from which the VMs can obtain the updates. See the [VDI deployment guide](deployment-vdi-windows-defender-antivirus.md) for how file shares can be used in virtual desktop infrastructure (VDI) environments.| |File share | You have non-Internet-connected devices (such as VMs). You can use your Internet-connected VM host to download the updates to a network share, from which the VMs can obtain the updates. See the [VDI deployment guide](deployment-vdi-windows-defender-antivirus.md) for how file shares can be used in virtual desktop infrastructure (VDI) environments.|
|System Center Configuration Manager | You are using System Center Configuration Manager to update your endpoints.| |System Center Configuration Manager | You are using System Center Configuration Manager to update your endpoints.|
|Security intelligence updates for Windows Defender Antivirus and other Microsoft antimalware |[Make sure your devices are updated to support SHA-2](https://support.microsoft.com/help/4472027/2019-sha-2-code-signing-support-requirement-for-windows-and-wsus). Microsoft Defender Antivirus Security intelligence updates are delivered through Windows Update, and starting Monday October 21, 2019 security intelligence updates will be SHA-2 signed exclusively. <br/>Download the latest protection updates because of a recent infection or to help provision a strong, base image for [VDI deployment](deployment-vdi-windows-defender-antivirus.md). This option should generally be used only as a final fallback source, and not the primary source. It will only be used if updates cannot be downloaded from Windows Server Update Service or Microsoft Update for [a specified number of days](https://docs.microsoft.com/windows/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus#set-the-number-of-days-before-protection-is-reported-as-out-of-date).| |Security intelligence updates for Windows Defender Antivirus and other Microsoft antimalware (formerly referred to as MMPC) |[Make sure your devices are updated to support SHA-2](https://support.microsoft.com/help/4472027/2019-sha-2-code-signing-support-requirement-for-windows-and-wsus). Microsoft Defender Antivirus Security intelligence updates are delivered through Windows Update, and starting Monday October 21, 2019 security intelligence updates will be SHA-2 signed exclusively. <br/>Download the latest protection updates because of a recent infection or to help provision a strong, base image for [VDI deployment](deployment-vdi-windows-defender-antivirus.md). This option should generally be used only as a final fallback source, and not the primary source. It will only be used if updates cannot be downloaded from Windows Server Update Service or Microsoft Update for [a specified number of days](https://docs.microsoft.com/windows/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus#set-the-number-of-days-before-protection-is-reported-as-out-of-date).|
You can manage the order in which update sources are used with Group Policy, System Center Configuration Manager, PowerShell cmdlets, and WMI. You can manage the order in which update sources are used with Group Policy, System Center Configuration Manager, PowerShell cmdlets, and WMI.