Microsoft 365 Message Center Archive

MC1181996 - Migration update for Office 365 connectors retirement in Teams – webhook URL support

Message ID

MC1181996

View in Message Center

Service

Microsoft Teams

Last Updated

Feb 12, 2026

Published Oct 31, 2025

Tag

Updated message
User impact
Admin impact
Retirement

Act by

Apr 30, 2026

Summary

The Office 365 Connectors retirement migration deadline in Teams is extended to March 31, 2026. By December 2025, Workflows webhooks will support messageCard payloads and posting to shared/private channels. Organizations should plan their transition accordingly. No compliance issues identified.

More information

Updated February 12, 2026: We have updated the timeline and content. Thank you for your patience. 

Introduction

We’ve extended the migration deadline to give organizations more time to transition. The following capabilities are now supported with Workflows webhooks:

  1. Posting messages using MessageCard‑formatted payloads (no reformatting required; however, button rendering will not be supported)
  2. Posting messages to shared channels

These updates significantly reduce migration friction for customers currently using Office 365 Connectors.

When this will happen:

The migration deadline is extended to April 30, 2026 (previously March 31). 

How this affects your organization:
  • Who is affected: Organizations using Office 365 Connectors in Microsoft Teams

What’s Coming Next:

Additional details and enhancements — including support for private channels — will be later this month.

What you can do to prepare:

If you are currently using Office 365 Connectors in Microsoft Teams:

  • Review your existing Office 365 Connector usage.
  • Begin migrating to Workflows webhooks as soon as possible.
  • Complete migration by April 30, 2026 to avoid service disruption.
Compliance considerations:

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