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Justin Hall
2018-01-24 14:49:52 -08:00
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windows/device-security/device-guard/deploy-device-guard-enable-virtualization-based-security.md
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@ -70,7 +70,7 @@ If you don't want to use the [hardware readiness tool](https://www.microsoft.com
5. Select the **Enabled** button. For **Select Platform Security Level**:
- **Secure Boot** provides as much protection as a computer’s hardware can support. If the computer does not have input/output memory management units (IOMMUs), enable **Secure Boot**.
- **Secure Boot with DMA** enables Secure Boot—and VBS itself—only on a computer that supports DMA, that is, a computer with IOMMUs. With this setting, any computer without IOMMUs will not have VBS or HVCI protection, although it can have WDAC enabled.<br>For information about how VBS uses the hypervisor to strengthen protections provided by WDAC, see [How Windows Defender Device Guard features help protect against threats](introduction-to-device-guard-virtualization-based-security-and-code-integrity-policies.md#how-windows-defender-device-guard-features-help-protect-against-threats).
- **Secure Boot with DMA** enables Secure Boot—and VBS itself—only on a computer that supports DMA, that is, a computer with IOMMUs. With this setting, any computer without IOMMUs will not have VBS or HVCI protection, although it can have WDAC enabled.<br>For information about how VBS uses the hypervisor to strengthen protections provided by WDAC, see [How Windows Defender Device Guard features help protect against threats](introduction-to-device-guard-virtualization-based-security-and-windows-defender-application-control.md#how-windows-defender-device-guard-features-help-protect-against-threats).
For **Virtualization Based Protection of Code Integrity**:
@ -93,7 +93,7 @@ Set the following registry keys to enable HVCI. This provides exactly the same s
<!--This comment ensures that the Important above and the Warning below don't merge together. -->
> [!IMPORTANT]
> - Among the commands that follow, you can choose settings for **Secure Boot** and **Secure Boot with DMA**. In most situations, we recommend that you choose **Secure Boot**. This option provides Secure Boot with as much protection as is supported by a given computer’s hardware. A computer with input/output memory management units (IOMMUs) will have Secure Boot with DMA protection. A computer without IOMMUs will simply have Secure Boot enabled.<br>In contrast, with **Secure Boot with DMA**, the setting will enable Secure Boot—and VBS itself—only on a computer that supports DMA, that is, a computer with IOMMUs. With this setting, any computer without IOMMUs will not have VBS or HVCI protection, although it can still have WDAC enabled.<br>For information about how VBS uses the hypervisor to strengthen protections provided by WDAC, see [How Windows Defender Device Guard features help protect against threats](introduction-to-device-guard-virtualization-based-security-and-code-integrity-policies.md#how-windows-defender-device-guard-features-help-protect-against-threats).<br>
> - Among the commands that follow, you can choose settings for **Secure Boot** and **Secure Boot with DMA**. In most situations, we recommend that you choose **Secure Boot**. This option provides Secure Boot with as much protection as is supported by a given computer’s hardware. A computer with input/output memory management units (IOMMUs) will have Secure Boot with DMA protection. A computer without IOMMUs will simply have Secure Boot enabled.<br>In contrast, with **Secure Boot with DMA**, the setting will enable Secure Boot—and VBS itself—only on a computer that supports DMA, that is, a computer with IOMMUs. With this setting, any computer without IOMMUs will not have VBS or HVCI protection, although it can still have WDAC enabled.<br>For information about how VBS uses the hypervisor to strengthen protections provided by WDAC, see [How Windows Defender Device Guard features help protect against threats](introduction-to-device-guard-virtualization-based-security-and-windows-defender-application-control.md#how-windows-defender-device-guard-features-help-protect-against-threats).<br>
> - All drivers on the system must be compatible with virtualization-based protection of code integrity; otherwise, your system may fail. We recommend that you enable these features on a group of test computers before you enable them on users' computers.
#### For Windows 1607 and above
@ -289,6 +289,6 @@ Figure 6. Windows Defender Device Guard properties in the System Summary
## Related topics
- [Introduction to Windows Defender Device Guard: virtualization-based security and Windows Defender Application Control](introduction-to-device-guard-virtualization-based-security-and-code-integrity-policies.md)
- [Introduction to Windows Defender Device Guard: virtualization-based security and Windows Defender Application Control](introduction-to-device-guard-virtualization-based-security-and-windows-defender-application-control.md)
- [Deploy Windows Defender Application Control](deploy-device-guard-deploy-code-integrity-policies.md)
- [Deploy Windows Defender Application Control](deploy-windows-defender-application-control.md)