Update faq-md-app-guard.md

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@ -8,7 +8,7 @@ ms.pagetype: security
ms.localizationpriority: medium ms.localizationpriority: medium
author: denisebmsft author: denisebmsft
ms.author: deniseb ms.author: deniseb
ms.date: 08/17/2020 ms.date: 09/14/2020
ms.reviewer: ms.reviewer:
manager: dansimp manager: dansimp
ms.custom: asr ms.custom: asr
@ -175,8 +175,8 @@ For Group Policy you need to look at the registry. See **Computer\HKEY_LOCAL_MAC
### I'm encountering TCP fragmentation issues, and cannot enable my VPN connection. How do I fix this? ### I'm encountering TCP fragmentation issues, and cannot enable my VPN connection. How do I fix this?
WinNAT drops ICMP/UDP messages with packets greater than MTU when using Default Switch or Docker NAT network. Support for this has been added in [KB4571744](https://www.catalog.update.microsoft.com/Search.aspx?q=4571744). To fix the issue, install the update and enable the fix through these steps: WinNAT drops ICMP/UDP messages with packets greater than MTU when using Default Switch or Docker NAT network. Support for this has been added in [KB4571744](https://www.catalog.update.microsoft.com/Search.aspx?q=4571744). To fix the issue, install the update and enable the fix by following these steps:
1. Ensure that the FragmentAware DWORD is set to 1 in this registry setting: "\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Services\\Winnat". 1. Ensure that the FragmentAware DWORD is set to 1 in this registry setting: `\Registry\Machine\SYSTEM\CurrentControlSet\Services\Winnat`.
2. Reboot. 2. Reboot the device.