Introducing new tool to migrate content from Slack to Microsoft Teams
From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Rollout
- Roadmap
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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 13 Jan 2026
early December 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 structuredUpdated January 13, 2026: We have updated the timeline. Thank you for your patience.
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 late January (previously early December) 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.
- 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.
What changed
Between archive captures, newest first- Tags
New feature, User impact, Admin impact→ Updated message, New feature, User impact, Admin impact
Updated January 13, 2026: We have updated the timeline. Thank you for your patience. Introduction We’re introducing a new Slack to Microsoft Teams migration tool to … complexity and improving continuity. When this will happen:Targeted Release: Rollout begins in late January (previously early
December 2025December) and completes by late January 2026. General Availability (Worldwide): Rollout begins in …- Tags
- · first version seen
Learn more
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