Teams Workflows revive scripts broken by connector retirement
Reviewed by Helen Jones
Microsoft completed the retirement of Office 365 Connectors in Teams on May 22, 2026, leaving legacy connector webhooks unable to post. Tony Redmond’s September 18 walkthrough restores an old Teams posting script by creating the “Send webhook alerts to a channel” workflow, replacing the webhook URL and testing the adaptive-card payload.
Old channel integrations are easy to miss because they may have run untouched for years. A script can look healthy while its retired connector endpoint has quietly stopped delivering roadmap, service-health or operational alerts. The useful lesson is broader than one script: Teams admins need an inventory of webhook-backed channel posts and a named owner for each replacement workflow. Rebuilding the endpoint without testing ownership and output simply moves the hidden dependency into Power Automate.
Analysis
Search your Teams integrations and scripts for legacy connector webhook URLs. Recreate one critical alert with the Teams “Send webhook alerts to a channel” workflow, then test the card output and record the workflow owner.
Source note
Pulse published by Collab365 Spaces, reviewed by Helen Jones on . Cite as "Teams Workflows revive scripts broken by connector retirement", Collab365 Spaces.