*For this entry exists the more relevant or more recent entry MC808160
check before: 2026-03-30
Product:
Teams
Platform:
Online, Web, World tenant
Status:
Change type:
Updated message, User impact, Admin impact, Retirement
Links:
Details:
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.
Details:
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:
Posting messages using MessageCard‑formatted payloads (no reformatting required; however, button rendering will not be supported)
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).
Change Category:
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Scope:
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Release Phase:
Created:
2025-11-01
updated:
2026-02-13
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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change history
| Date | Property | old | new |
| 2026-02-13 | MC prepare | Plan to transition from Office 365 Connectors to Workflows webhooks by March 31, 2026.
Prepare to use new webhook capabilities starting December 2025. [Compliance considerations:] No compliance considerations identified, review as appropriate for your organization. | 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. |
| 2026-02-13 | MC Last Updated | 11/01/2025 00:04:14 | 2026-02-12T20:33:42Z |
| 2026-02-13 | MC Messages | [Introduction]
Update 10/28/2025: New information related to Office 365 Connectors Retirement in Teams - Webhook URL Migration (MC808160). We've extended the migration deadline to give organizations more time to transition. We're also making progress on feature parity for Workflows webhooks. [When this will happen:] The migration deadline is extended to March 31, 2026. Feature parity improvements will be available by December 2025. | 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: Posting messages using MessageCard‑formatted payloads (no reformatting required; however, button rendering will not be supported) 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). |
| 2026-02-13 | MC Action Required By | 03/30/2026 09:00:00 | 2026-04-30T09:00:00Z |
| 2026-02-13 | MC How Affect | Who is affected: Organizations using Office 365 Connectors in Microsoft Teams.
What will happen: Migration deadline extended to March 31, 2026. By December 2025, Workflows webhooks will support: Posting messageCard formatted payloads (no need to reformat to Adaptive Cards). Posting messages and Adaptive Cards to shared or private channels. | 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. |
| 2026-02-13 | MC Title | Migration update for Office 365 connectors retirement in Teams – webhook URL support | (Updated) Migration update for Office 365 connectors retirement in Teams – webhook URL support |
| 2026-02-13 | MC End Time | 04/30/2026 09:00:00 | 2026-06-01T09:00:00Z |
Last updated 7 days ago ago
