[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.
[How this affects your organization:]- 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
messageCardformatted payloads (no need to reformat to Adaptive Cards). - Posting messages and Adaptive Cards to shared or private channels.
- Posting
- Plan to transition from Office 365 Connectors to Workflows webhooks by March 31, 2026.
- Prepare to use new webhook capabilities starting December 2025.
No compliance considerations identified, review as appropriate for your organization.
Source: Microsoft
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