

Note: Changing an existing EAS profile with these new settings results in a new profile being pushed to the device. This managed EAS profile forces OAuth as the authentication method, only allows Contacts synchronization, and prevents the user from changing what data types are synchronized. Using the general instructions in Add e-mail settings for iOS devices in Microsoft Intune, configure and deploy the below managed EAS profile to your enrolled user base: Once Outlook for iOS contact synchronization is disabled, the duplicates are removed. Note: Due to app configuration delivery timing, some users may experience duplicate contacts in the native iOS Contacts app. For more information, see Managed Exchange ActiveSync Profile improvements introduced in iOS13/iPadOS. This is because the managed EAS profile recommendation utilizes functionality only available in iOS 13+ / iPadOS. However, this approach should not be performed until all user devices are upgraded to iOS 13+ or iPadOS. Deploy an Outlook App Configuration Policy (ACP) that disables Save Contacts.Deploy a managed Exchange ActiveSync (EAS) profile for contact synchronization.Organizations can adopt this approach by deploying the following policies: This approach results in two synchronization paths – Outlook leverages the native Microsoft sync technology for synchronizing data within Outlook, and ActiveSync is leveraged by iOS to synchronize the contacts. With this contact synchronization model in place, users no longer need to leverage Outlook for iOS’s contact export synchronization process. On enrolled devices, users can leverage an Exchange ActiveSync profile that only synchronizes contacts. However, with the Managed Exchange ActiveSync Profile improvements introduced in iOS13/iPadOS, organizations now have an additional capability to configure how users can manage contacts on mobile devices.

Unfortunately, these issues are not something that Outlook for iOS can solve as we’re completely dependent on the operating system to provide a supported mechanism for bi-directional synchronization and for delivering managed contacts.
