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MC1459131 Stay informedUpdated messageNew featureAdmin impact

(Updated) Microsoft Teams: Prepare custom apps for private and shared channel compatibility

Microsoft Teams
Microsoft 365 admin center

Rollout

Roadmap
569019
Platforms
Web

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

What the notice says

Microsoft's text, with its sections, lists and tables; source markup removed

Updated September 2, 2026: We have updated the timeline. Thank you for your patience.

What and Why

Microsoft will begin rolling out a new feature in Teams admin center that helps admins identify custom line-of-business (LOB) apps that need updates to work in private and shared channels. Taking action now will help organizations ensure apps are available in these channels and work smoothly across evolving channel experiences.

This message is associated with Microsoft 365 Roadmap ID 569019

Rollout Schedule

General Availability (Worldwide): We will begin rolling out mid-September 2026 (previously early September) and expect to complete by late September 2026.

Impact on your organization

If apps are not updated to support private and shared channels, users may be unable to access those app experiences in these channels until the required updates are completed.

Why this is important

  • Business continuity: As organizations adopt private and shared channels, updating LOB apps helps reduce the risk of app access gaps across channels.
  • Lower operational overhead: Completing these updates early can help reduce admin escalations, helpdesk tickets, and reactive fixes.

What you can expect

Admins will be able to view a list of custom LOB apps that are not compatible with private and shared channels in the Teams admin center under Teams apps > Manage apps.

Guidance is available now, enabling organizations to work with custom LOB app developers to plan and complete the required updates. Developers can review the documented requirements, update their apps, and validate supported scenarios.

Action Required / Recommendations

  • Review custom apps used in team and channel scenarios across your organization.
  • Ask your app developers to complete the required updates for private/shared channel scenarios.
  • Validate that updated apps continue to support the scenarios your users rely on.

Learn more

Teams connects shared and private channels - Teams | Microsoft Learn

What changed

Between the versions this installation saw, newest first

This installation has seen one version of this notice, first on 19 Oct 2026. Later changes will show here.

Linked documentation

Microsoft pages the notice links to

The notice links to no Microsoft Learn or Support page that this installation reads.

Not confirmed here

What this page cannot tell you
  • Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.
  • Versions before 19 Oct 2026: this installation first saw the notice after Microsoft posted it.
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