Added prerequisite

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cc: @MicrosoftGuyJFlo

Author: MarileeTurscak-MSFT

articles/active-directory/conditional-access/require-managed-devices.md

@@ -28,6 +28,7 @@ Requiring managed devices for cloud app access ties **Azure AD Conditional Acces
 
 - **[Conditional Access in Azure Active Directory](../active-directory-conditional-access-azure-portal.md)** - This article provides you with a conceptual overview of Conditional Access and the related terminology.
 - **[Introduction to device management in Azure Active Directory](../devices/overview.md)** - This article gives you an overview of the various options you have to get devices under organizational control. 
+- For Chrome support in **Windows 10 Creators Update (version 1703)** or later, install the [Windows 10 Accounts extension](https://chrome.google.com/webstore/detail/windows-10-accounts/ppnbnpeolgkicgegkbkbjmhlideopiji). This extension is required when a Conditional Access policy requires device specific details.
 
 >[!NOTE] 
 > We recommend using Azure AD device based Conditional Access policy to get the best enforcement after initial device authentication. This includes closing sessions if the device falls out of compliance and device code flow.