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Copilot Studio bot in Teams occasionally sends duplicate responses
I’m using a Copilot Studio bot deployed in Microsoft Teams, and I’m experiencing an intermittent issue where a single user message occasionally triggers two identical responses. This does not happen consistently, and there is no intentional duplicate logic in my bot design. I’m not sure whether this is caused by duplicate message delivery from Teams (e.g., retries or at-least-once delivery behavior), or something within Copilot Studio itself. Is this a known behavior for the Teams channel or Copilot Studio? Are there any recommended ways to detect or prevent duplicate responses at the bot level? Any insights or best practices would be appreciated.Copilot Studio in Teams sometimes wraps user input with HTML tags (e.g., <div>)
I’m using Copilot Studio deployed to Microsoft Teams, and I noticed that user messages are occasionally received with HTML tags. For example, when a user sends "get me the onboarding status", sometimes it displays in the dialog box as "<div>get me the onboarding status</div>" This does not happen consistently. I’m not sure whether this is caused by how Teams renders or sends messages (e.g., HTML vs plain text), or if it is something specific to Copilot Studio. Is this expected behavior for the Teams channel? Any clarification or recommended handling would be appreciated.
ad-hoc call transcripts via graph api endpoint
I have an app with the below permissions. I can successfully get list of transcripts and transcript content for online meetings. But when I try to get list for ad-hoc calls, I get the 400 Bad Request error. Any suggestions on how to get ad hoc call transcripts? Permissions Error:Create Bot without Developer Studio
Hi, We have a bit hard policies and users are not able to use the Developer Studio by they own to make new Bot: If you press [New Bot] you can give the name, but then [Create Bot] start hanging and does nothing. Previously on Azure had a user setting which block or allow users to register apps. Now I need our tenant admins or application administrators (?) to setup the bot(s) manually. Does anybody knows if the bot registration for Teams is possible to do without developer studio? The Developer Studio shows only your own Bots, so they cannot do that for me using Developer Studio.
Web Notifications API from Personal Tab app doesn't work
I have a client-side web application that we're trying to get to run as a Teams personal tab app. I have the app working as a teams app, as long as we "open in new window" so that the app doesn't get put to sleep as it needs a permanently up session with something else. Our app uses Web Notifications API (https://developer.mozilla.org/en-US/docs/Web/API/Notification) to create desktop notificiations, but this does not seem to work when running as a Teams tab app popped out into a new window. No notifications are displayed. Permissions have been requested correctly and given and Windows is set to allow notifications, but these web notifications never make it out of teams to the desktop. There are no errors in the browser console to say the web notifications are not supported in Teams. Is this not supported as a teams app? The inbuilt activity feed is useless for our purpose (for a few reasons), so please don't suggest I use graph to make use of that instead.
SSO for a Python Teams Bot (M365 Agents SDK + FastAPI) — Single-Tenant, Multi-Tenant, and UAMI
We're building, a Teams bot (Python / FastAPI) that uses the M365 Agents SDK (microsoft-agents-hosting-fastapi + microsoft-agents-authentication-msal, v0.8.0) with a CloudAdapter and MsalConnectionManager. The bot is currently scoped to personal only and runs behind an Azure Bot resource. We are trying to implement SSO to authenticate users, so far we are not successful. The main blocker is that we failed to authenticate users from tenant different than the Azure Bot resource of our app. If anyone has successfully managed to authenticate users on Teams using a setup similar than ours please do share your experience. We would love to learn from your experience. So far this was our main source of documentation: https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/authentication/bot-sso-overview Many thanks
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 events for every new message. However, in shared channels, the behavior is different: I only receive events when the bot is explicitly tagged Regular messages in the channel don’t trigger any events Permissions currently granted: Channel.ReadBasic.All (Application) ChannelMember.Read.All (Application) ChannelMessage.Read.All (Application) Has anyone faced this with shared channels? Is this expected behavior or am I missing something in setup? Thanks!
Error ColdStoreNotSupportedForMessageException when sending message MS Teams via Graph API.
I'm using the Graph API to send a message to a Microsoft Teams channel, but I'm getting the following error. Endpoint: https://graph.microsoft.com/v1.0/teams/{team_id}/channels/{channel_id}/messages Reference: https://learn.microsoft.com/ja-jp/graph/api/chatmessage-post?view=graph-rest-1.0&tabs=http#http-request Error response: { "code": "NotFound", "message": "NotFound", "innerError": { "code": "1", "message": "MessageNotFound-Message does not exist in the thread: ColdStoreNotSupportedForMessageException:ColdStoreMessageOperations is not supported if cutOffColdStoreEpoch is not provided. (msgVersion:1773201279001, cutoff:1773137924398)", "date": "2026-03-17T10:18:44", "request-id": "7e4d1acd-05d0-4ff6-82ac-4cf0549bfa56", "client-request-id": "7e4d1acd-05d0-4ff6-82ac-4cf0549bfa56" } } I couldn't find any documentation related to ColdStoreNotSupportedForMessageException. Has anyone encountered this before or have any insight into what's causing it?
