Added wsl2-kernel.md

Author: craigloewen-msft

WSL/wsl2-kernel.md

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+---
+title: Updating the WSL 2 Linux kernel
+description: Instructions on how to update your WSL 2 Linux kernel manually
+keywords: BashOnWindows, bash, wsl, windows, windows subsystem for linux, windowssubsystem, ubuntu, wsl.conf, wslconfig
+ms.date: 03/12/2020
+ms.topic: article
+ms.assetid: 7afaeacf-435a-4e58-bff0-a9f0d75b8a51
+ms.custom: seodec18
+---
+
+# Updating the WSL 2 Linux kernel
+
+To manually update the Linux kernel inside of WSL 2 please follow these steps. 
+
+## Download the Linux kernel update package
+
+Please click on [this link](https://wslstorestorage.blob.core.windows.net/wslblob/wsl_update_x64.msi) to download the latest WSL2 Linux kernel update package for AMD64 machines.
+
+> [!NOTE] if you're using an ARM64 machine, please download [this package](https://wslstorestorage.blob.core.windows.net/wslblob/wsl_update_arm64.msi) instead.
+
+## Install the Linux kernel update package
+
+To install the Linux kernel update package:
+	1. Run the update package downloaded in the previous step.
+	2. You will be prompted for elevated permissions, select ‘yes’ to approve this installation.
+	3. Once the installation is complete, you are ready to begin using WSL2!
+
+## Future plans for updating the WSL2 Linux kernel
+
+For more info on these changes, please read [this blog post](https://devblogs.microsoft.com/commandline/wsl2-will-be-generally-available-in-windows-10-version-2004) on the [Windows Command Line Blog](https://aka.ms/cliblog).