Action: Block all devices except Outlook for iOS and Android and Exchange ActiveSync clients on Windows devices If your organization ...

Action: Block all devices except Outlook for iOS and Android and Exchange ActiveSync clients on Windows devices  If your organization has standardized on Outlook for iOS and Android and Windows devices as the only approved apps for accessing messaging data on mobile devices, you can define a default block rule and configure an allow rule for Outlook using the following commands in Windows PowerShell. This configuration prevents any non-Windows Exchange ActiveSync (EAS) native app from connecting and only allows Outlook for iOS and Android devices to connect. To do so, see Option 1 in Enabling Outlook for iOS and Andriod in Exchange Online. Learn more at Outlook for iOS and Android.