Posted inMicrosoft Teams

MC1530957: Microsoft Teams Makes Threads the Default Layout for New Channels Created via Microsoft Graph

3 minutesPosted inMicrosoft Teams
MWPRO IMPACT SCORE
OPERATIONAL IMPACT
57
0 25 50 75 100
HIGH IMPACT • REVIEW RECOMMENDED
Recommended Action:
Review the update and plan any required actions before rollout.
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Primary Audience

Teams AdminsDevelopersMicrosoft 365 AdminsIT ManagersService Owners
Why this score?
AI Confidence
HIGH
Enough detail is available to trust this assessment.
Assessment Reasoning
This update changes the default layout for Teams channels created via Microsoft Graph, affecting scripts and automation that omit the layoutType parameter. Admins and developers must review and update provisioning logic if they rely on the Posts layout. End users won’t notice immediate changes, but workflows that create channels automatically may yield different layouts. The change is operationally significant for automated Teams management but straightforward to implement once configurations are reviewed.
70
🛡️ Admin Impact
HIGH
30
👥 User Impact
MEDIUM
60
⚡ Urgency
HIGH
50
🔧 Effort
HIGH
ℹ️ WHAT YOU NEED TO KNOW
📌

AT A GLANCE

New Teams channels created through Microsoft Graph will default to the Threads layout if no layout type is specified. Existing channels remain unchanged.
👥

END USERS

No major end-user change expected.
🛡️

IT ADMINS

Inform developers using Graph to update scripts if the Posts layout is still required.
📅

ROLLOUT TIMELINE

Upcoming:
Late November 2026

📢 Official Microsoft Message Center Announcement

Microsoft Teams: Threads will become the default layout for new channels created with Microsoft Graph
Message ID: MC1530957

[What and why]

We’re updating the default message layout for new Microsoft Teams channels created through the Microsoft Graph v1.0 Create channel API (POST /v1.0/teams/{team-id}/channels). When a channel creation request doesn’t specify the layoutType property, the new channel will use the Threads layout instead of the Posts layout.

This change applies only to newly created channels. Existing channels won’t change.

[Rollout schedule]

  • General Availability (Worldwide, GCC, GCC High, DoD): Beginning in late November 2026 and expected to complete by late November 2026

[Impact on your organization]

Who is affected

  • Organizations with applications, scripts, or automated provisioning workflows that create Microsoft Teams channels through Microsoft Graph without specifying the layoutType property

Platforms and services

  • Microsoft Teams and Microsoft Graph v1.0 Create channel API

What will happen

  • If layoutType is omitted, new channels will use the Threads layout instead of the Posts layout.
  • If "layoutType": "post" is specified, new channels will use the Posts layout.
  • If "layoutType": "chat" is specified, new channels will use the Threads layout.
  • The API value for the Threads layout is "chat", not "threads".
  • Existing channels won’t change.
  • Channel creation requests that explicitly specify a supported layout aren’t affected.

[Action required and recommendations]

  • Notify developers and owners of applications or automation that create Teams channels through Microsoft Graph.
  • If your organization requires new channels to continue using the Posts layout, update channel creation requests to explicitly include "layoutType": "post" before rollout begins.
  • For third-party solutions, contact the provider to confirm how the solution specifies the channel layout.
  • If Threads is your desired layout, no request changes are required to adopt the new default.
  • Review and test dependent workflows for compatibility with Threads.

Learn more

[Compliance considerations]

No compliance considerations identified. Review as appropriate for your organization.

Source: Microsoft Message Center • Analysed by MWPro

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