Migrate your Teams webhook to Workflows

Microsoft is retiring the legacy Office 365 Connectors in favor of Power Automate Workflows.

Connectors will stop working by the end of April 2026.

To ensure that your Looker alerts continue to deliver to Teams, you must replace your current webhook URL with a new "Workflow" URL.

Phase 1: Create the new webhook in Microsoft Teams

  1. Open Microsoft Teams and navigate to the channel where you want to receive alerts.
  2. Click the three dots (...) menu in the channel and select Workflows.
  3. In the search bar, type "webhook" and select the template titled "Post to a channel when a webhook request is received".

  4. Follow the setup prompts:

    • Name: Give the workflow a descriptive name (for example, "Looker Alerts - Sales").
    • Connections: Ensure that you're signed in to the Microsoft Teams connector.
    • Details: Confirm that the team and channel are correct.

  5. Click Add Workflow.

  6. Once created, a URL will be displayed. Copy this URL immediately. This is your new webhook endpoint.

Phase 2: Update the URL in Looker

  1. Go to your Looker instance and navigate to the Admin > Actions panel or to the specific Looker schedule where the webhook is configured.
  2. Locate the Microsoft Teams action.
  3. Delete the old URL (which likely starts with outlook.office.com) and paste the new URL (which likely starts with prod-XX.region.logic.azure.com).
  4. Test the connection by sending a test payload from Looker to ensure that the message appears in your Teams channel.

Why is this migration necessary?

  • Infrastructure change: Microsoft is moving the backend of webhooks from the old "Connectors" service to "Power Automate."
  • URL expiry: The old URLs will eventually stop accepting data, resulting in 404 or Expired errors in your Looker logs.
  • Backward compatibility: Even though you are using a new "Workflow" URL, the existing Looker message format (MessageCard) is still supported.

Troubleshooting note

  • Permissions: If you don't see the Workflows option in your Teams channel, your IT administrator may have restricted the Workflows (Power Automate) app. You will need to ask your admin to enable the app for your account.
  • Rate Limits: The new Workflows service has different rate limits than the old connectors. If you send hundreds of alerts per minute, you may encounter 429 Too Many Requests errors.