MC448368 – Announcing de-duplication of contacts in Outlook Web

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check before: 2022-11-04


Graph API, Microsoft 365 Apps, Outlook


Developer, mobile, Web, Windows Desktop, World tenant


Rolling out

Change type:

New feature, Admin impact




Duplicate contacts are hard to remove manually and as a result people information often remains scattered across contacts. Microsoft is offering end users of Outlook Web App (OWA) the ability to discover duplicate contacts and merge information for a profile into one contact. As a tenant admin of an organization, you are receiving this message because your end users may be introduced to duplicate contact merge suggestions in OWA.

This means that our service will proactively detect duplicate contacts for users of your tenant and will present merge suggestions in OWA. All user merged contacts will appear subsequently in Outlook Desktop and Mobile. As part of feature completeness, we provide an option to control the audience within your organization. You can control the audience for this feature by disabling/enabling the service for a part of your organization or for your entire organization. For details, please refer to the 'What you need to do to prepare' section below.
This message is associated with Microsoft 365 Roadmap ID 98124
[When this will happen:]
The admin and user settings to enable or disable this feature will be live from October 20, 2022.
Feature will be enabled by default, but the service will be turned on only on October 31, 2022.
This will begin rolling out late November and complete rolling out early December.
Once activated, the feature will be enabled/disabled based on the tenant admin and user configurations. No action is taken on the users’ contact lists without explicit user consent.
User settings are documented here - contactMergeSuggestions resource type. End-users can disable/enable the feature by going to > Settings & Privacy > Privacy > Services > Merge duplicate contacts.

Change Category:


Release Phase:
Targeted Release (Entire Organization)



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