Effective February 22, 2022, basic authentication will be turned off for ActiveSync, IMAP and POP . We recommend using the Microsoft Outlook mobile app , but you can still use the default Mail apps for iOS and Android. However, you must delete your...

See Switching to the Outlook Mobile App if you are switching from another mobile email app to Outlook mobile app. NOTE: If you need to remove your account from a non-recommended mail app (e.g., Mail, Gmail, Email), see Alternative Mobile Device...

Sometimes a corrupt profile on the server can cause issues with using ActiveSync to view your email on your mobile device. To resolve the issue, remove the mobile device profile using the Office 365 web site. On your device, remove the ActiveSync/...