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...

Chat

developer

microsoft teams

anandjo

Microsoft

Mar 27, 2026

Deepak, to make the app work in shared channels, you need to do the following:
1. Update the manifest to declare support for shared channels. Instructions can be found here:

https://learn.microsoft.com/en-us/microsoftteams/platform/build-apps-for-shared-private-channels?tabs=tabs%2Cexternal-users%2Csharedchannel#apps-with-no-dependence-on-specified-parameters:~:text=Add%20supportsChannelFeatures%3A%20tier1%20to%20your%20app%20manifest

2. Enable the app in the shared channel once the app has been installed in the parent team.

Add teamsApp - Microsoft Graph beta | Microsoft Learn

deepak_nayak

Copper Contributor

Mar 29, 2026

Thanks - I’ve already done both of those:

Updated the manifest with supportsChannelFeatures: tier1
Added/enabled the app in the shared channel after installing it in the host team

The issue I’m seeing is different: even after setup, I don’t receive regular message events in shared channels - only messages where the bot is explicitly @mentioned.

From the shared/private channels documentation, it seems message change notifications for /channels/{id}/messages are not supported for shared channels with RSC, and the suggested fallback is on-demand reads.

Can you confirm if this is an expected limitation?

Also, what is the recommended pattern for near real-time processing in shared channels in this case? For example:

Is periodic polling via Graph the only supported approach?
Are there any event-based alternatives or roadmap plans for this?

Trying to understand how others are building reliable message ingestion for shared channels.

Forum Discussion

Bot not receiving message events in shared channels (RSC)