MC1213779 – (Updated) Introducing new tool to migrate content from Slack to Microsoft Teams

Product:

Microsoft 365 admin center, Teams

Platform:

Online, US Instances, Web, Windows Desktop, World tenant

Status:

In development

Change type:

Admin impact, New feature, Updated message, User impact

Links:

485709

Details:

Summary:
A new Slack to Microsoft Teams migration tool will roll out from late January to early March 2026, enabling admins to migrate Slack channel content into Teams channels. It appears in the Microsoft admin center, requires no opt-in, and initially supports channel content only. No action needed before rollout.

Details:
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 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.

Change Category:
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Scope:
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Release Phase:
General Availability, Targeted Release

Created:
2026-01-06

updated:
2026-01-14

Task Type

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Docu to Check

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MS How does it affect me

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MS Preperations

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MS Urgency

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MS workload name

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linked item details

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Pictures

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summary for non-techies**

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Direct effects for Operations**

Data Loss Risk
Without proper preparation, there is a risk of data loss during the migration process if channels are not reviewed adequately before migration.
   - roles: Microsoft 365 Administrator, IT Support Specialist
   - references: https://learn.microsoft.com/MicrosoftTeams/slack-to-teams-migration-tool

User Confusion
Users may experience confusion if they are not informed about the migration process, leading to potential disruptions in communication and collaboration.
   - roles: End User, Team Leader
   - references: https://learn.microsoft.com/MicrosoftTeams/slack-to-teams-migration-tool

Integration Issues
If the migration tool is used without testing, there may be integration issues with existing Teams functionalities, affecting user experience.
   - roles: Microsoft 365 Administrator, IT Support Specialist
   - references: https://learn.microsoft.com/MicrosoftTeams/slack-to-teams-migration-tool

Configutation Options**

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Opportunities**

Streamlined Content Management
The new migration tool simplifies the process of transferring content from Slack to Teams, which can enhance content management practices and reduce time spent on manual migration efforts. This opportunity can lead to better organization and accessibility of communication records in Teams.
   - next-steps: Train IT staff on using the migration tool effectively and create a standardized process for content review and migration. Establish a timeline for the migration to ensure minimal disruption.
   - roles: IT Administrators, Project Managers, Compliance Officers
   - references: https://learn.microsoft.com/MicrosoftTeams/slack-to-teams-migration-tool

Improved User Experience
By migrating content to Teams, users will benefit from a unified communication platform, which can enhance collaboration and reduce confusion associated with using multiple tools. This transition can lead to higher productivity and satisfaction among users.
   - next-steps: Communicate the benefits of the migration to all users and provide training sessions on using Teams effectively post-migration. Gather user feedback to continuously improve the experience.
   - roles: End Users, Team Leaders, HR Managers
   - references: https://learn.microsoft.com/MicrosoftTeams/slack-to-teams-migration-tool

Enhanced IT Operational Efficiency
The automated migration process reduces the administrative burden on IT teams, allowing them to focus on other critical tasks and improving overall operational efficiency. This can lead to better resource allocation and a more proactive IT environment.
   - next-steps: Assess current IT workload and identify areas where resources can be reallocated post-migration. Monitor the migration process to gather insights for future migrations or tool implementations.
   - roles: IT Administrators, Operations Managers, CIOs
   - references: https://learn.microsoft.com/MicrosoftTeams/slack-to-teams-migration-tool

Potentional Risks**

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IT Security**

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explanation for non-techies**

Imagine you're moving from one house to another. You have boxes filled with your belongings from your old home, and you need to transport them to your new place. In this scenario, Slack is your old house, and Microsoft Teams is your new one. The new migration tool is like a moving truck that helps you transfer your boxes—your Slack channel content—from the old house to the new one.

Starting from late January to early March 2026, this tool will be available in the Microsoft admin center. It will help administrators move Slack channel content into Teams channels. Just like a moving truck doesn't require you to do anything special before it arrives, this tool doesn't need any opt-in or preparation before it rolls out. It's designed to make the transition as smooth as possible.

The tool initially supports only the content from Slack channels, similar to moving only the furniture and leaving other items for later. In the future, updates will allow for more types of content to be moved. Administrators can review which Slack channels are ready for migration, much like deciding which rooms to pack up first. They can then proceed with the migration and monitor its progress, ensuring everything arrives safely in Teams.

There's no change to how Teams works, so it's like moving into a new house that already has the same utilities and setup as your old one. The feature is automatically available, so there's no need to sign up or enable anything. If you're planning a migration, it's a good idea to check which Slack channels are ready to move and inform your IT and helpdesk teams about the change, similar to letting your family know about the moving schedule.

In terms of compliance, there are no specific concerns identified, but it's always wise to review your organization's policies, just as you would check local regulations when moving to a new area. For more detailed guidance, you can refer to Microsoft's documentation on the migration process.