Microsoft begins blocking work email access for unprepared Intune users - Neowin

As of January 19, Microsoft is blocking access to work email for users who have not updated their Intune mobile applications, including core tools like Outlook, Teams, and OneDrive. Businesses that did not prepare for this security update, announced months ago, will see their users unable to launch managed work apps if the Company Portal app on Android is not updated to version 5.0.6726.0 or higher.