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

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

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. 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 messageCard formatted payloads (no need to reformat to Adaptive Cards). Posting messages and Adaptive Cards to shared or private channels. What you can do to 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. Message ID: MC1181996

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by João Ferreira

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