diff --git a/windows/release-information/index.md b/windows/release-information/index.md
index c80e214ec1..5f7b5e22f9 100644
--- a/windows/release-information/index.md
+++ b/windows/release-information/index.md
@@ -13,11 +13,11 @@ ms.localizationpriority: high
---
# Windows 10 release information
-Feature updates for Windows 10 are released twice a year, around March and September, via the Semi-Annual Channel and will be serviced with monthly quality updates for 18 months from the date of the release.
+Feature updates for Windows 10 are released twice a year, around March and September, via the Semi-Annual Channel. They will be serviced with monthly quality updates for 18 or 30 months from the date of the release, depending on the lifecycle policy.
We recommend that you begin deployment of each Semi-Annual Channel release immediately as a targeted deployment to devices selected for early adoption and ramp up to full deployment at your discretion. This will enable you to gain access to new features, experiences, and integrated security as soon as possible.
-Starting with Windows 10, version 1809, feature updates for Windows 10 Enterprise and Education editions are serviced for 30 months from their release date. For information about servicing timelines, see the [Windows lifecycle fact sheet](https://support.microsoft.com/help/13853).
+For information about servicing timelines, see the [Windows lifecycle fact sheet](https://support.microsoft.com/help/13853).
>[!NOTE]
>Beginning with Windows 10, version 1903, this page will no longer list Semi-Annual Channel (Targeted) information for version 1903 and future feature updates. Instead, you will find a single entry for each Semi-Annual Channel release. For more information, see [this blog post](https://techcommunity.microsoft.com/t5/Windows-IT-Pro-Blog/Windows-Update-for-Business-and-the-retirement-of-SAC-T/ba-p/339523).
diff --git a/windows/security/threat-protection/TOC.md b/windows/security/threat-protection/TOC.md
index 3535676cf8..08a7fe11e3 100644
--- a/windows/security/threat-protection/TOC.md
+++ b/windows/security/threat-protection/TOC.md
@@ -249,7 +249,7 @@
##### [Manage updates and apply baselines]()
###### [Learn about the different kinds of updates](windows-defender-antivirus/manage-updates-baselines-windows-defender-antivirus.md)
-###### [Manage protection and definition updates](windows-defender-antivirus/manage-protection-updates-windows-defender-antivirus.md)
+###### [Manage protection and security intelligence updates](windows-defender-antivirus/manage-protection-updates-windows-defender-antivirus.md)
###### [Manage when protection updates should be downloaded and applied](windows-defender-antivirus/manage-protection-update-schedule-windows-defender-antivirus.md)
###### [Manage updates for endpoints that are out of date](windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus.md)
###### [Manage event-based forced updates](windows-defender-antivirus/manage-event-based-updates-windows-defender-antivirus.md)
diff --git a/windows/security/threat-protection/windows-defender-antivirus/manage-event-based-updates-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/manage-event-based-updates-windows-defender-antivirus.md
index 6d9853ffb9..805f9c697f 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/manage-event-based-updates-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/manage-event-based-updates-windows-defender-antivirus.md
@@ -1,6 +1,6 @@
---
title: Apply Windows Defender Antivirus updates after certain events
-description: Manage how Windows Defender Antivirus applies protection updates after startup or receiving cloud-delivered detection reports.
+description: Manage how Windows Defender Antivirus applies security intelligence updates after startup or receiving cloud-delivered detection reports.
keywords: updates, protection, force updates, events, startup, check for latest, notifications
search.product: eADQiWindows 10XVcnh
ms.pagetype: security
@@ -32,7 +32,7 @@ You can use System Center Configuration Manager, Group Policy, PowerShell cmdlet
1. On your System Center Configuration Manager console, open the antimalware policy you want to change (click **Assets and Compliance** in the navigation pane on the left, then expand the tree to **Overview** > **Endpoint Protection** > **Antimalware Policies**)
-2. Go to the **Scheduled scans** section and set **Check for the latest definition updates before running a scan** to **Yes**.
+2. Go to the **Scheduled scans** section and set **Check for the latest security intelligence updates before running a scan** to **Yes**.
3. Click **OK**.
@@ -99,9 +99,9 @@ You can also use Group Policy, PowerShell, or WMI to configure Windows Defender
3. Click **Policies** then **Administrative templates**.
-4. Expand the tree to **Windows components > Windows Defender Antivirus > Signature Updates**.
+4. Expand the tree to **Windows components > Windows Defender Antivirus > Security Intelligence Updates**.
-5. Double-click **Initiate definition update on startup** and set the option to **Enabled**.
+5. Double-click **Initiate security intelligence update on startup** and set the option to **Enabled**.
6. Click **OK**.
@@ -143,7 +143,7 @@ If you have enabled cloud-delivered protection, Windows Defender AV will send fi
3. Click **Policies** then **Administrative templates**.
4. Expand the tree to **Windows components > Windows Defender Antivirus > Signature Updates** and configure the following:
- 1. Double-click **Allow real-time definition updates based on reports to Microsoft MAPS** and set the option to **Enabled**. Click **OK**.
+ 1. Double-click **Allow real-time security intelligence updates based on reports to Microsoft MAPS** and set the option to **Enabled**. Click **OK**.
2. Double-click **Allow notifications to disable definitions based reports to Microsoft MAPS** and set the option to **Enabled**. Click **OK**.
> [!NOTE]
diff --git a/windows/security/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus.md
index 4ef46be432..ca75fa1e6f 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus.md
@@ -36,10 +36,10 @@ If Windows Defender Antivirus did not download protection updates for a specifie
1. On your System Center Configuration Manager console, open the antimalware policy you want to change (click **Assets and Compliance** in the navigation pane on the left, then expand the tree to **Overview** > **Endpoint Protection** > **Antimalware Policies**)
-2. Go to the **Definition updates** section and configure the following settings:
+2. Go to the **Security intelligence updates** section and configure the following settings:
- 1. Set **Force a definition update if the client computer is offline for more than two consecutive scheduled updates** to **Yes**.
- 2. For the **If Configuration Manager is used as a source for definition updates...**, specify the hours before which the protection updates delivered by Configuration Manager should be considered out-of-date. This will cause the next update location to be used, based on the defined [fallback source order](manage-protection-updates-windows-defender-antivirus.md#fallback-order).
+ 1. Set **Force a security intelligence update if the client computer is offline for more than two consecutive scheduled updates** to **Yes**.
+ 2. For the **If Configuration Manager is used as a source for security intelligence updates...**, specify the hours before which the protection updates delivered by Configuration Manager should be considered out-of-date. This will cause the next update location to be used, based on the defined [fallback source order](manage-protection-updates-windows-defender-antivirus.md#fallback-order).
3. Click **OK**.
@@ -55,7 +55,7 @@ If Windows Defender Antivirus did not download protection updates for a specifie
4. Expand the tree to **Windows components > Windows Defender Antivirus > Signature Updates**.
-5. Double-click the **Define the number of days after which a catch-up definition update is required** setting and set the option to **Enabled**. Enter the number of days after which you want Windows Defender AV to check for and download the latest protection update.
+5. Double-click the **Define the number of days after which a catch-up security intelligence update is required** setting and set the option to **Enabled**. Enter the number of days after which you want Windows Defender AV to check for and download the latest protection update.
6. Click **OK**.
diff --git a/windows/security/threat-protection/windows-defender-antivirus/manage-protection-update-schedule-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/manage-protection-update-schedule-windows-defender-antivirus.md
index 48167c31af..146b92de6f 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/manage-protection-update-schedule-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/manage-protection-update-schedule-windows-defender-antivirus.md
@@ -37,13 +37,13 @@ You can also randomize the times when each endpoint checks and downloads protect
1. On your System Center Configuration Manager console, open the antimalware policy you want to change (click **Assets and Compliance** in the navigation pane on the left, then expand the tree to **Overview** > **Endpoint Protection** > **Antimalware Policies**)
-2. Go to the **Definition updates** section.
+2. Go to the **Security intelligence updates** section.
3. To check and download updates at a certain time:
- 1. Set **Check for Endpoint Protection definitions at a specific interval...** to **0**.
- 2. Set **Check for Endpoint Protection definitions daily at...** to the time when updates should be checked.
+ 1. Set **Check for Endpoint Protection security intelligence updates at a specific interval...** to **0**.
+ 2. Set **Check for Endpoint Protection security intelligence updates daily at...** to the time when updates should be checked.
3
-4. To check and download updates on a continual interval, Set **Check for Endpoint Protection definitions at a specific interval...** to the number of hours that should occur between updates.
+4. To check and download updates on a continual interval, Set **Check for Endpoint Protection security intelligence updates at a specific interval...** to the number of hours that should occur between updates.
5. [Deploy the updated policy as usual](https://docs.microsoft.com/sccm/protect/deploy-use/endpoint-antimalware-policies#deploy-an-antimalware-policy-to-client-computers).
@@ -60,9 +60,9 @@ You can also randomize the times when each endpoint checks and downloads protect
5. Expand the tree to **Windows components > Windows Defender Antivirus > Signature Updates** and configure the following settings:
- 1. Double-click the **Specify the interval to check for definition updates** setting and set the option to **Enabled**. Enter the number of hours between updates. Click **OK**.
- 2. Double-click the **Specify the day of the week to check for definition updates** setting and set the option to **Enabled**. Enter the day of the week to check for updates. Click **OK**.
- 3. Double-click the **Specify the time to check for definition updates** setting and set the option to **Enabled**. Enter the time when updates should be checked. The time is based on the local time of the endpoint. Click **OK**.
+ 1. Double-click the **Specify the interval to check for security intelligence updates** setting and set the option to **Enabled**. Enter the number of hours between updates. Click **OK**.
+ 2. Double-click the **Specify the day of the week to check for security intelligence updates** setting and set the option to **Enabled**. Enter the day of the week to check for updates. Click **OK**.
+ 3. Double-click the **Specify the time to check for security intelligence updates** setting and set the option to **Enabled**. Enter the time when updates should be checked. The time is based on the local time of the endpoint. Click **OK**.
diff --git a/windows/security/threat-protection/windows-defender-antivirus/manage-protection-updates-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/manage-protection-updates-windows-defender-antivirus.md
index a76cb6ae4a..ee825e3d08 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/manage-protection-updates-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/manage-protection-updates-windows-defender-antivirus.md
@@ -93,7 +93,7 @@ The procedures in this article first describe how to set the order, and then how
4. Expand the tree to **Windows components > Windows Defender > Signature updates** and configure the following settings:
- 1. Double-click the **Define the order of sources for downloading definition updates** setting and set the option to **Enabled**.
+ 1. Double-click the **Define the order of sources for downloading security intelligence updates** setting and set the option to **Enabled**.
2. Enter the order of sources, separated by a single pipe, for example: `InternalDefinitionUpdateServer|MicrosoftUpdateServer|MMPC`, as shown in the following screenshot.
@@ -101,7 +101,7 @@ The procedures in this article first describe how to set the order, and then how
3. Click **OK**. This will set the order of protection update sources.
- 4. Double-click the **Define file shares for downloading definition updates** setting and set the option to **Enabled**.
+ 4. Double-click the **Define file shares for downloading security intelligence updates** setting and set the option to **Enabled**.
5. Enter the file share source. If you have multiple sources, enter each source in the order they should be used, separated by a single pipe. Use [standard UNC notation](https://msdn.microsoft.com/library/gg465305.aspx) for denoting the path, for example: `\\host-name1\share-name\object-name|\\host-name2\share-name\object-name`. If you do not enter any paths then this source will be skipped when the VM downloads updates.
diff --git a/windows/security/threat-protection/windows-defender-antivirus/manage-updates-mobile-devices-vms-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/manage-updates-mobile-devices-vms-windows-defender-antivirus.md
index 342cc01fe5..179c55aac4 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/manage-updates-mobile-devices-vms-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/manage-updates-mobile-devices-vms-windows-defender-antivirus.md
@@ -56,7 +56,7 @@ You can opt-in to Microsoft Update on the mobile device in one of the following
5. Expand the tree to **Windows components > Windows Defender Antivirus > Signature Updates**.
-6. Double-click the **Allow definition updates from Microsoft Update** setting and set the option to **Enabled**. Click **OK**.
+6. Double-click the **Allow security intelligence updates from Microsoft Update** setting and set the option to **Enabled**. Click **OK**.
**Use a VBScript to opt-in to Microsoft Update**
@@ -75,7 +75,7 @@ You can opt-in to Microsoft Update on the mobile device in one of the following
You can configure Windows Defender Antivirus to only download protection updates when the PC is connected to a wired power source.
-**Use Group Policy to prevent definition updates on battery power:**
+**Use Group Policy to prevent security intelligence updates on battery power:**
1. On your Group Policy management machine, open the [Group Policy Management Console](https://technet.microsoft.com/library/cc731212.aspx), right-click the Group Policy Object you want to configure and click **Edit**.
@@ -85,7 +85,7 @@ You can configure Windows Defender Antivirus to only download protection updates
5. Expand the tree to **Windows components > Windows Defender Antivirus > Signature Updates** and configure the following setting:
- 1. Double-click the **Allow definition updates when running on battery power** setting and set the option to **Disabled**.
+ 1. Double-click the **Allow security intelligence updates when running on battery power** setting and set the option to **Disabled**.
2. Click **OK**. This will prevent protection updates from downloading when the PC is on battery power.
diff --git a/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac-resources.md b/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac-resources.md
index 8d774b3037..a39cf22ad8 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac-resources.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac-resources.md
@@ -94,7 +94,7 @@ Important tasks, such as controlling product settings and triggering on-demand s
|Protection |Do a quick scan |`mdatp --scan --quick` |
|Protection |Do a full scan |`mdatp --scan --full` |
|Protection |Cancel an ongoing on-demand scan |`mdatp --scan --cancel` |
-|Protection |Request a definition update |`mdatp --definition-update` |
+|Protection |Request a security intelligence update |`mdatp --definition-update` |
## Microsoft Defender ATP portal information
diff --git a/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus.md
index 52e8586de1..a371aaca96 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus.md
@@ -1487,7 +1487,7 @@ Symbolic name:
Message:
|
-The antimalware definition update failed.
+The security intelligence update failed.
|
@@ -1498,12 +1498,12 @@ Description:
Windows Defender Antivirus has encountered an error trying to update signatures.
-- New Signature Version: <New version number>
-- Previous Signature Version: <Previous signature version>
+- New security intelligence version: <New version number>
+- Previous security intelligence version: <Previous version>
- Update Source: <Update source>, for example:
-- Signature update folder
-- Internal definition update server
+- Security intelligence update folder
+- Internal security intelligence update server
- Microsoft Update Server
- File share
- Microsoft Malware Protection Center (MMPC)
diff --git a/windows/security/threat-protection/windows-defender-antivirus/use-group-policy-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/use-group-policy-windows-defender-antivirus.md
index 10f61826d3..b7114cd1fd 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/use-group-policy-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/use-group-policy-windows-defender-antivirus.md
@@ -124,20 +124,20 @@ Scan | Specify the scan type to use for a scheduled scan | [Configure scheduled
Scan | Specify the time for a daily quick scan | [Configure scheduled scans for Windows Defender Antivirus](scheduled-catch-up-scans-windows-defender-antivirus.md)
Scan | Specify the time of day to run a scheduled scan | [Configure scheduled scans for Windows Defender Antivirus](scheduled-catch-up-scans-windows-defender-antivirus.md)
Scan | Start the scheduled scan only when computer is on but not in use | [Configure scheduled scans for Windows Defender Antivirus](scheduled-catch-up-scans-windows-defender-antivirus.md)
-Security intelligence updates | Allow definition updates from Microsoft Update | [Manage updates for mobile devices and virtual machines (VMs)](manage-updates-mobile-devices-vms-windows-defender-antivirus.md)
-Security intelligence updates | Allow definition updates when running on battery power | [Manage updates for mobile devices and virtual machines (VMs)](manage-updates-mobile-devices-vms-windows-defender-antivirus.md)
+Security intelligence updates | Allow security intelligence updates from Microsoft Update | [Manage updates for mobile devices and virtual machines (VMs)](manage-updates-mobile-devices-vms-windows-defender-antivirus.md)
+Security intelligence updates | Allow security intelligence updates when running on battery power | [Manage updates for mobile devices and virtual machines (VMs)](manage-updates-mobile-devices-vms-windows-defender-antivirus.md)
Security intelligence updates | Allow notifications to disable definitions based repots to Microsoft MAPS | [Manage event-based forced updates](manage-event-based-updates-windows-defender-antivirus.md)
-Security intelligence updates | Allow real-time definition updates based on reports to Microsoft MAPS | [Manage event-based forced updates](manage-event-based-updates-windows-defender-antivirus.md)
+Security intelligence updates | Allow real-time security intelligence updates based on reports to Microsoft MAPS | [Manage event-based forced updates](manage-event-based-updates-windows-defender-antivirus.md)
Security intelligence updates | Check for the latest virus and spyware definitions on startup | [Manage event-based forced updates](manage-event-based-updates-windows-defender-antivirus.md)
-Security intelligence updates | Define file shares for downloading definition updates | [Manage Windows Defender Antivirus protection and definition updates](manage-protection-updates-windows-defender-antivirus.md)
-Security intelligence updates | Define the number of days after which a catch up definition update is required | [Manage updates for endpoints that are out of date](manage-outdated-endpoints-windows-defender-antivirus.md)
+Security intelligence updates | Define file shares for downloading security intelligence updates | [Manage Windows Defender Antivirus protection and security intelligence updates](manage-protection-updates-windows-defender-antivirus.md)
+Security intelligence updates | Define the number of days after which a catch up security intelligence update is required | [Manage updates for endpoints that are out of date](manage-outdated-endpoints-windows-defender-antivirus.md)
Security intelligence updates | Define the number of days before spyware definitions are considered out of date | [Manage updates for endpoints that are out of date](manage-outdated-endpoints-windows-defender-antivirus.md)
Security intelligence updates | Define the number of days before virus definitions are considered out of date | [Manage updates for endpoints that are out of date](manage-outdated-endpoints-windows-defender-antivirus.md)
-Security intelligence updates | Define the order of sources for downloading definition updates | [Manage Windows Defender Antivirus protection and definition updates](manage-protection-updates-windows-defender-antivirus.md)
-Security intelligence updates | Initiate definition update on startup | [Manage event-based forced updates](manage-event-based-updates-windows-defender-antivirus.md)
-Security intelligence updates | Specify the day of the week to check for definition updates | [Manage when protection updates should be downloaded and applied](manage-protection-update-schedule-windows-defender-antivirus.md)
-Security intelligence updates | Specify the interval to check for definition updates | [Manage when protection updates should be downloaded and applied](manage-protection-update-schedule-windows-defender-antivirus.md)
-Security intelligence updates | Specify the time to check for definition updates | [Manage when protection updates should be downloaded and applied](manage-protection-update-schedule-windows-defender-antivirus.md)
+Security intelligence updates | Define the order of sources for downloading security intelligence updates | [Manage Windows Defender Antivirus protection and security intelligence updates](manage-protection-updates-windows-defender-antivirus.md)
+Security intelligence updates | Initiate security intelligence update on startup | [Manage event-based forced updates](manage-event-based-updates-windows-defender-antivirus.md)
+Security intelligence updates | Specify the day of the week to check for security intelligence updates | [Manage when protection updates should be downloaded and applied](manage-protection-update-schedule-windows-defender-antivirus.md)
+Security intelligence updates | Specify the interval to check for security intelligence updates | [Manage when protection updates should be downloaded and applied](manage-protection-update-schedule-windows-defender-antivirus.md)
+Security intelligence updates | Specify the time to check for security intelligence updates | [Manage when protection updates should be downloaded and applied](manage-protection-update-schedule-windows-defender-antivirus.md)
Security intelligence updates | Turn on scan after Security intelligence update | [Configure scheduled scans for Windows Defender Antivirus](scheduled-catch-up-scans-windows-defender-antivirus.md)
Threats | Specify threat alert levels at which default action should not be taken when detected | [Configure remediation for Windows Defender Antivirus scans](configure-remediation-windows-defender-antivirus.md)
Threats | Specify threats upon which default action should not be taken when detected | [Configure remediation for Windows Defender Antivirus scans](configure-remediation-windows-defender-antivirus.md)
diff --git a/windows/security/threat-protection/windows-defender-antivirus/windows-defender-security-center-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/windows-defender-security-center-antivirus.md
index 35d9a97b4f..6333dad0ae 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/windows-defender-security-center-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/windows-defender-security-center-antivirus.md
@@ -85,7 +85,7 @@ This section describes how to perform some of the most common tasks when reviewi
4. Click **Run a new advanced scan** to specify different types of scans, such as a full scan.
-**Review the definition update version and download the latest updates in the Windows Security app**
+**Review the security intelligence update version and download the latest updates in the Windows Security app**
1. Open the Windows Security app by clicking the shield icon in the task bar or searching the start menu for **Defender**.
2. Click the **Virus & threat protection** tile (or the shield icon on the left menu bar).
|