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###### [Manage updates for endpoints that are out of date](windows-defender-antivirus/manage-outdated-endpoints-windows-defender-antivirus.md)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).
|