diff --git a/windows/security/threat-protection/device-guard/requirements-and-deployment-planning-guidelines-for-virtualization-based-protection-of-code-integrity.md b/windows/security/threat-protection/device-guard/requirements-and-deployment-planning-guidelines-for-virtualization-based-protection-of-code-integrity.md
index e88b1b13e8..725e9d2023 100644
--- a/windows/security/threat-protection/device-guard/requirements-and-deployment-planning-guidelines-for-virtualization-based-protection-of-code-integrity.md
+++ b/windows/security/threat-protection/device-guard/requirements-and-deployment-planning-guidelines-for-virtualization-based-protection-of-code-integrity.md
@@ -42,7 +42,7 @@ The following tables provide more information about the hardware, firmware, and
| Firmware: **UEFI firmware version 2.3.1.c or higher with UEFI Secure Boot** | See the System.Fundamentals.Firmware.UEFISecureBoot requirement in the [Windows Hardware Compatibility Specifications for Windows 10, version 1809 and Windows Server 2019 - Systems download](https://go.microsoft.com/fwlink/?linkid=2027110). You can find previous versions of the Windows Hardware Compatibility Program Specifications and Policies [here](https://docs.microsoft.com/windows-hardware/design/compatibility/whcp-specifications-policies). | UEFI Secure Boot helps ensure that the device boots only authorized code. This can prevent boot kits and root kits from installing and persisting across reboots. |
| Firmware: **Secure firmware update process** | UEFI firmware must support secure firmware update found under the System.Fundamentals.Firmware.UEFISecureBoot requirement in the [Windows Hardware Compatibility Specifications for Windows 10, version 1809 and Windows Server 2019 - Systems download](https://go.microsoft.com/fwlink/?linkid=2027110). You can find previous versions of the Windows Hardware Compatibility Program Specifications and Policies [here](https://docs.microsoft.com/windows-hardware/design/compatibility/whcp-specifications-policies). | UEFI firmware just like software can have security vulnerabilities that, when found, need to be patched through firmware updates. Patching helps prevent root kits from getting installed. |
| Software: **HVCI compatible drivers** | See the Filter.Driver.DeviceGuard.DriverCompatibility requirement in the [Windows Hardware Compatibility Specifications for Windows 10, version 1809 and Windows Server 2019 - Filter driver download](https://go.microsoft.com/fwlink/?linkid=2027110). You can find previous versions of the Windows Hardware Compatibility Program Specifications and Policies [here](https://docs.microsoft.com/windows-hardware/design/compatibility/whcp-specifications-policies). | [HVCI Compatible](https://blogs.msdn.microsoft.com/windows_hardware_certification/2015/05/22/driver-compatibility-with-device-guard-in-windows-10/) drivers help ensure that VBS can maintain appropriate memory permissions. This increases resistance to bypassing vulnerable kernel drivers and helps ensure that malware cannot run in kernel. Only code verified through code integrity can run in kernel mode. |
-| Software: Qualified **Windows operating system** | Windows 10 Enterprise, Windows 10 Education, Windows Server 2016, or Windows 10 IoT Enterprise
Important:
Windows Server 2016 running as a domain controller does not support Windows Defender Credential Guard. Only virtualization-based protection of code integrity is supported in this configuration.
| Support for VBS and for management features that simplify configuration of Windows Defender Device Guard. |
+| Software: Qualified **Windows operating system** | Windows 10 Enterprise, Windows 10 Pro, Windows 10 Education, Windows Server 2016, or Windows 10 IoT Enterprise
Important:
Windows Server 2016 running as a domain controller does not support Windows Defender Credential Guard. Only virtualization-based protection of code integrity is supported in this configuration.
| Support for VBS and for management features that simplify configuration of Windows Defender Device Guard. |
> **Important** The following tables list additional qualifications for improved security. You can use Windows Defender Device Guard with hardware, firmware, and software that support baseline protections, even if they do not support protections for improved security. However, we strongly recommend meeting these additional qualifications to significantly strengthen the level of security that Windows Defender Device Guard can provide.
@@ -75,6 +75,6 @@ The following tables describe additional hardware and firmware qualifications, a
| Protections for Improved Security | Description | Security benefits |
|---------------------------------------------|----------------------------------------------------|------|
-| Firmware: **VBS enablement of NX protection for UEFI runtime services** | • VBS will enable No-Execute (NX) protection on UEFI runtime service code and data memory regions. UEFI runtime service code must support read-only page protections, and UEFI runtime service data must not be exceutable.
• UEFI runtime service must meet these requirements:
• Implement UEFI 2.6 EFI_MEMORY_ATTRIBUTES_TABLE. All UEFI runtime service memory (code and data) must be described by this table.
• PE sections need to be page-aligned in memory (not required for in non-volitile storage).
• The Memory Attributes Table needs to correctly mark code and data as RO/NX for configuration by the OS:
• All entries must include attributes EFI_MEMORY_RO, EFI_MEMORY_XP, or both
• No entries may be left with neither of the above attributes, indicating memory that is both exceutable and writable. Memory must be either readable and executable or writeable and non-executable.
Notes:
• This only applies to UEFI runtime service memory, and not UEFI boot service memory.
• This protection is applied by VBS on OS page tables.
Please also note the following:
• Do not use sections that are both writeable and exceutable
• Do not attempt to directly modify executable system memory
• Do not use dynamic code | • Vulnerabilities in UEFI runtime, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
• Reduces the attack surface to VBS from system firmware. |
+| Firmware: **VBS enablement of NX protection for UEFI runtime services** | • VBS will enable No-Execute (NX) protection on UEFI runtime service code and data memory regions. UEFI runtime service code must support read-only page protections, and UEFI runtime service data must not be executable.
• UEFI runtime service must meet these requirements:
• Implement UEFI 2.6 EFI_MEMORY_ATTRIBUTES_TABLE. All UEFI runtime service memory (code and data) must be described by this table.
• PE sections need to be page-aligned in memory (not required for in non-volitile storage).
• The Memory Attributes Table needs to correctly mark code and data as RO/NX for configuration by the OS:
• All entries must include attributes EFI_MEMORY_RO, EFI_MEMORY_XP, or both
• No entries may be left with neither of the above attributes, indicating memory that is both executable and writable. Memory must be either readable and executable or writeable and non-executable.
Notes:
• This only applies to UEFI runtime service memory, and not UEFI boot service memory.
• This protection is applied by VBS on OS page tables.
Please also note the following:
• Do not use sections that are both writeable and executable
• Do not attempt to directly modify executable system memory
• Do not use dynamic code | • Vulnerabilities in UEFI runtime, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
• Reduces the attack surface to VBS from system firmware. |
| Firmware: **Firmware support for SMM protection** | The [Windows SMM Security Mitigations Table (WSMT) specification](https://download.microsoft.com/download/1/8/A/18A21244-EB67-4538-BAA2-1A54E0E490B6/WSMT.docx) contains details of an Advanced Configuration and Power Interface (ACPI) table that was created for use with Windows operating systems that support Windows virtualization-based security (VBS) features.| • Protects against potential vulnerabilities in UEFI runtime services, if any, will be blocked from compromising VBS (such as in functions like UpdateCapsule and SetVariable)
• Reduces the attack surface to VBS from system firmware.
• Blocks additional security attacks against SMM. |
diff --git a/windows/security/threat-protection/windows-defender-application-control/applocker/applocker-overview.md b/windows/security/threat-protection/windows-defender-application-control/applocker/applocker-overview.md
index e153eda8b0..b7d7885b7f 100644
--- a/windows/security/threat-protection/windows-defender-application-control/applocker/applocker-overview.md
+++ b/windows/security/threat-protection/windows-defender-application-control/applocker/applocker-overview.md
@@ -81,6 +81,9 @@ The following are examples of scenarios in which AppLocker can be used:
- Some computers in your organization are shared by people who have different software usage needs, and you need to protect specific apps.
- In addition to other measures, you need to control the access to sensitive data through app usage.
+> [!NOTE]
+> AppLocker is a defense-in-depth security feature and **not** a [security boundary](https://www.microsoft.com/msrc/windows-security-servicing-criteria). [Windows Defender Application Control](https://www.microsoft.com/msrc/windows-security-servicing-criteria) should be used when the goal is to provide robust protection against a threat and there are expected to be no by-design limitations that would prevent the security feature from achieving this goal.
+
AppLocker can help you protect the digital assets within your organization, reduce the threat of malicious software being introduced into your environment, and improve the management of application control and the maintenance of application control policies.
## Installing AppLocker