Building, integrating, or customizing apps and workflows within Microsoft Teams using developer tools and APIs
Dear green
Thank you for reaching out to Microsoft Q&A forum and apologize for the inconvenience
First of all, I genuinely understand how disruptive and stressful this is when your organization relies on these notifications for real operational work. I’m sorry for the uncertainty and the planning burden this creates. However, as a forum moderator, I don’t have the ability to change Microsoft’s product roadmap, implementation pace, or retirement schedule, and I can’t request exceptions on behalf of customers.
As of the latest official update, Microsoft has acknowledged delays and extended the Office 365 Connectors retirement deadline to April 30, 2026 to provide additional migration time.
Moreover, it also confirmed that MessageCard payload support is now available in Workflows (with limitations) and that the Workflows bot (Flow bot) can post in shared channels, while Flow bot posting to private channels remains under development, so you can consider trying this as a workaround
Link reference: https://learn.microsoft.com/en-us/microsoftteams/platform/webhooks-and-connectors/how-to/add-incoming-webhook?tabs=newteams%2Cdotnet
Thank you for your understand and wish you have a nice day.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.