Compliance Problems

How Microsoft Teams Chat Retention Policies Affect Different Users

Maira Mehtab Sep 22, 2026 869 views

Question details

The user wants to understand how Microsoft Teams chat retention policies affect message visibility when users in the same chat have different policy coverages.

Product: Microsoft Teams
Device & OS: not provided
Scenario: Managing data lifecycle and compliance for Microsoft Teams chat history.
Observed behavior: When a retention policy applies to only one user in a chat, messages older than the retention period may be deleted from that user's view, while the other user continues to see the full chat history.

Before you start

Ensure you have global administrator or compliance administrator permissions in Microsoft 365 to view and manage Purview retention policies.

Solution 1Recommended

Review Policy Scope in Microsoft Purview

Verify the retention policy settings to understand which users are included and how deletion behaves.

Teams retention policies apply at the user level for chats. If Employee A is covered by a deletion policy and Employee B is not, Employee A will lose access to older messages, while Employee B will retain them.

Access Microsoft Purview

Navigate to Retention Policies

Go to Data lifecycle management, select Microsoft 365, and click on the Retention policies tab.

Check User Scope

Open the specific Teams chat retention policy, click Edit, and review the 'Included' and 'Excluded' users to determine who is actively affected by the deletion rules.

Solution 2

Confirm Behavior with Microsoft 365 Support

Because outcomes can vary based on complex configurations, contact support before rolling out policies to mixed-coverage users.

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Frequently Asked Questions

Can one user see a deleted Teams chat while another cannot?

Yes. Teams chat retention policies apply to individual users. If one user is covered by a deletion policy and the other is not, the covered user will lose access to older messages, but the excluded user will still see the full chat history.

Where do I configure Microsoft Teams chat retention policies?

Retention policies for Teams chats are managed in the Microsoft Purview compliance portal under Data lifecycle management > Microsoft 365.

Does a Teams retention policy delete chats for everyone in a 1:1 chat?

Not necessarily. The deletion only applies to the users explicitly included in the policy's scope. If only one participant is included, the chat is only deleted from their view.

How can I avoid deleting chats for unintended users?

Carefully review the 'Included' and 'Excluded' user lists within the policy settings in Microsoft Purview. For complex deployments, it is recommended to test the policy on a small group or consult Microsoft 365 Support.

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