Merged PR 8263: Added known issues section

This commit is contained in:
Justin Hall 2018-05-16 17:31:05 +00:00
commit 2e6410e0fc

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@ -6,7 +6,7 @@ ms.prod: w10
ms.mktglfcycl: deploy
ms.localizationpriority: high
author: jsuther1974
ms.date: 05/03/2018
ms.date: 05/16/2018
---
# Planning and getting started on the Windows Defender Application Control deployment process
@ -60,5 +60,25 @@ This topic provides a roadmap for planning and getting started on the Windows De
8. Enable desired virtualization-based security (VBS) features. Hardware-based security features—also called virtualization-based security (VBS) features—strengthen the protections offered by Windows Defender Application Control.
> [!WARNING]
> Virtualization-based protection of code integrity may be incompatible with some devices and applications. We strongly recommend testing this configuration in your lab before enabling virtualization-based protection of code integrity on production systems. Failure to do so may result in unexpected failures up to and including data loss or a blue screen error (also called a stop error).
## Known issues
This section covers known issues with WDAC and Device Guard. Virtualization-based protection of code integrity may be incompatible with some devices and applications, which might cause unexpected failures, data loss, or a blue screen error (also called a stop error).
Test this configuration in your lab before enabling it in production.
### MSI Installations are blocked by WDAC
Installing .msi files directly from the internet to a computer protected by WDAC will fail.
For example, this command will not work:
```code
msiexec i https://download.microsoft.com/download/2/E/3/2E3A1E42-8F50-4396-9E7E-76209EA4F429/Windows10_Version_1511_ADMX.msi
```
As a workaround, download the MSI file and run it locally:
```code
msiexec i c:\temp\Windows10_Version_1511_ADMX.msi
```