Introducing new tool to migrate content from Slack to Microsoft Teams

A new Slack to Microsoft Teams migration tool will roll out from December 2025 to March 2026, allowing admins to migrate Slack channel content into Teams channels via the Microsoft admin center. It requires no opt-in, supports channel content initially, and needs no pre-rollout action.

[Introduction]

We’re introducing a new Slack to Microsoft Teams migration tool to help organizations seamlessly transition collaboration from Slack to Teams. This tool enables administrators to migrate content from Slack public and private channels into Teams shared, public, and private channels, reducing complexity and improving continuity.

[When this will happen:]

• Targeted Release: Rollout begins in early December 2025 and completes by late January 2026.
• General Availability (Worldwide): Rollout begins in late January 2026 and completes by early March 2026.

[How this affects your organization:]

Who is affected: Microsoft 365 administrators managing Teams and Slack migrations.

What will happen:

• A new Slack to Teams migration tool will appear in the Migration and imports page of the Microsoft admin center.

Screenshot 1: On the setup page, users can specify a Slack export file and select a workspace to migrate.



Screenshot 2: On the migration page, users can run migration tasks and monitor their execution status.



• Admins can:
  • Review Slack channels eligible for migration.
  • Migrate Slack channel content to Teams channels.
• Initial release supports Slack channel content only; future updates will expand to other Slack content types.
• No changes to existing Teams functionality.
• Feature is available by default; no opt-in required.

[What you can do to prepare:]

• No action is required before rollout.
• If planning a migration:
  • Review Slack channels for migration readiness.
  • Communicate this change to IT and helpdesk teams.

Learn more: Migrating from Slack to Microsoft Teams - Microsoft Teams | Microsoft Learn

[Compliance considerations:]

No compliance considerations identified; review as appropriate for your organization.