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Contact Unification across Outlook and Teams

From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.

Rollout

Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".

Schedule dates changed in the text

Date phrases in schedule sentences differ between the versions this installation saw
  • Seen 10 Sep 2025 August 2025 → September 2025
  • Seen 31 Jul 2025 June 2025 → August 2025
  • Seen 7 May 2025 April 2025 → June 2025
  • Seen 13 Nov 2024 January 2024, December 2024, April 2025

Read from date phrases in Microsoft's text, not from notice metadata. A changed phrase can be a moved rollout, a new milestone or just rewording; "What changed" below shows which.

What the notice says

Microsoft’s text, safely structured

Updated September 10, 2025: We have updated the content. Thank you for your patience.

Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are not available in Outlook. To provide a consistent experience we are making changes to allow Teams contacts, created with a user's Entra ID (AAD) account, to be visible in Outlook as well.

Upcoming changes to contacts in Teams and Outlook

Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and Teams. In future, changes to contacts in users’ organization (Entra ID) account in Teams will reflect in Outlook and vice versa.

What's Happened so far:

  • We have completed one round of migration of all Teams contacts to Outlook in January 2024.
  • As a result, users may see more contacts in Outlook, namely those created in Teams and potentially Skype for Business contacts (if enabled).
  • Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts.
  • Teams users can see Outlook contacts but cannot edit them inside Teams.

What's Coming

Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled for each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook and Teams. Any change in Outlook will reflect in Teams and vice versa.

All Teams contact changes (creations and edits) made since January will be included in the unified store. During creations, a small set of users may see duplicate contacts in the unified store. To help users navigate the transition, category label ‘Teams Conflict’ will be applied to duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention.

When this will happen

This activity is expected to be completed for all active users by September 2025 (previously August) tentatively (previously June). Once this activity is complete, users will work with a single contact list across Teams and Outlook.

How this will affect your organization

Once this change is complete, users will be able to see created contacts across both Outlook and Teams and vice versa.

What you need to do to prepare

Action Required: Update your organisation documentation and training materials to reflect the upcoming changes for the new unified contact experience.

You may consider updating your training and documentation as appropriate. If users wish to retain a snapshot of their existing contacts in Outlook, please encourage users to back-up their existing contacts using the export capability in Outlook.

What changed

Between archive captures, newest first
  1. Updated July 31,September 10, 2025: We have updated the timeline.content. Thank you for your patience.    Today, users can see Outlook contacts created with their Entra ID (AAD) … This activity is expected to be completed for all active users by AugustSeptember 2025 (previously August) tentatively (previously June). Once this activity is complete, users will work with …

  2. Updated May 7,July 31, 2025: We have updated the timeline below. timeline. Thank you for your patience. Today, users can see Outlook contacts created … This activity is expected to be completed for all active users by JuneAugust 2025 tentatively (previously April).June). Once this activity is complete, users will work with a single contact …

  3. Updated November 12, 2024:May 7, 2025: We have updated the content and rollout timeline below. Thank you for your patience. Today, users can see Outlook … This activity is expected to be completed for all active users by AprilJune 2025 tentatively.tentatively (previously April). Once this activity is complete, users will work with a single contact …

  4. Updated May 23,November 12, 2024: We have updated the content and rollout timeline below. Thank you for your patience. Today, users can see Outlook contacts created with their Entra ID (AAD) account in Teams, but contacts created in Teams are working onnot available in Outlook. To provide a fewconsistent experience we are making changes to the system, and the current Message center post willallow Teams contacts, created with a user's Entra ID (AAD) account, to be updated soonvisible in Outlook as well. Upcoming changes to reflect the latestcontacts in Teams and Outlook: Currently, Teams and Outlook maintain separate contact lists for enterprise users. Based on your feedback, we plan to introduce a unified contact experience, ensuring a consistent contacts experience across Outlook and timelines.Teams. In the interim, wefuture, changes to contacts in users’ organization (Entra ID) account in Teams will reflect in Outlook and vice versa.  What's Happened so far:  We have completed one timeround of migration of Teams,all Teams contacts to outlook contact store but any changesOutlook in January 2024.  As a result, users may see more contacts in Outlook will not reflectOutlook, namely those created in Teams and vice versa. Thispotentially Skype for Business contacts (if enabled).  Existing Outlook contacts may also be enriched with additional details from corresponding Teams contacts.  Teams users can see Outlook contacts but cannot edit them inside Teams.  What's Coming:  Users will gradually upgrade to the new unified experience from December 2024. The new experience will be enabled in next steps for this effort. Please stay tuned for further updates on this via the message center post. Today, users canfor each user across all endpoints (Desktop, Mobile, Devices etc.) simultaneously. Once the new experience is enabled for a user, they will see same set of contacts in Outlook contacts created with their Entra ID (AAD) accountand Teams. Any change in Outlook will reflect in Teams, but contacts createdTeams and vice versa.  All Teams contact changes (creations and edits) made since January will be included in Teams are not availablethe unified store. During creations, a small set of users may see duplicate contacts in Outlook.the unified store. To provide a consistent experience we are making changeshelp users navigate the transition, category label ‘Teams Conflict’ will be applied to allow Teams contacts, created with a user's Entra ID (AAD) account,duplicate contacts. This label will help users see any conflicts (duplicates or inconsistencies) that need their attention.  When this will happen: This activity is expected to be visible in Outlook as well. Whencompleted for all active users by April 2025 tentatively. Once this will happen: Weactivity is complete, users will provide updates when we are ready to proceed. work with a single contact list across Teams and Outlook.  How this will affect your organization Once this change is complete, users … and Teams and vice versa. What you need to do to prepare Action Required: Update your organisation documentation and training materials to reflect the upcoming changes for the new unified contact experience. You may consider updating your training and documentation as appropriate. If users wish to retain a snapshot of their existing contacts in Outlook, please encourage users to back-up their existing contacts using the export capability in Outlook.

  5. Updated February 27,May 23, 2024: We are working on a few changes to the system, and … user's Entra ID (AAD) account, to be visible in Outlook as well. [WhenWhen this will happen:]happen: We will provide updates when we are ready to proceed. [HowHow this will affect your organization]organization Once this change is complete, users will be able to see created contacts across both Outlook and Teams and vice versa. [WhatWhat you need to do to prepare]prepare You may consider updating your training and documentation as appropriate.

  6. … user's Entra ID (AAD) account, to be visible in Outlook as well. When[When this will happen:happen:] We will provide updates when we are ready to proceed. How[How this will affect your organizationorganization] Once this change is complete, users will be able to see created contacts across both Outlook and Teams and vice versa. What[What you need to do to prepareprepare] You may consider updating your training and documentation as appropriate.

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