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deepak_nayak's avatar
deepak_nayak
Copper Contributor
Mar 27, 2026

Bot not receiving message events in shared channels (RSC)

Hi folks, Running into an issue with a bot in Microsoft Teams shared channels. I've configured RSC permissions to listen for new messages. This works as expected in standard channels - I receive ev...
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microsoft teams
Nivedipa-MSFT's avatar
Nivedipa-MSFT
Icon for Microsoft rankMicrosoft
Mar 31, 2026

Hello deepak_nayak,

Currently, there are no real-time change notifications available for shared channel messages, as neither RSC nor Graph subscriptions provide this functionality.

Recommended approach: Poll for updates using Graph delta queries every 60 seconds:

GET /teams/{id}/channels/{id}/messages/delta

You can combine this with InvalidUsername processing to support real-time interactions. At this time, no event-based solution is available.

  • Yash-ClearFeed's avatar
    Yash-ClearFeed
    Copper Contributor
    Apr 07, 2026

    Nivedipa-MSFT​ Thanks for confirming the polling approach using the delta API.

    Could you also share if there are any defined or recommended rate limits for /messages/delta and /replies APIs? Since we may need to poll across a large number of channels, any guidance on safe polling intervals or throughput (per app/tenant) would be really helpful to avoid throttling.
    Thanks!

    • Nivedipa-MSFT's avatar
      Nivedipa-MSFT
      Icon for Microsoft rankMicrosoft
      Apr 08, 2026

      Hello Yash-ClearFeed,

      Teams message APIs (/messages/delta, /replies) share a limit of 60 requests/min per app per tenant.

      • Under 60 channels: Polling every 60s is feasible
      • 60+ channels: Use Graph change notifications (webhooks) as the primary method, with delta queries as periodic catch-up
      • Always handle HTTP 429 with Retry-After and exponential backoff