Sending message via Microsoft Teams Bot Builder

Lance Lee 5

We're currently using the botbuilder for javascript to send messages to conversations.
For the many times we've used it in the past, we've had no issues with sending the messages.

However now we are receiving these errors sporadically

Conversation not found.
User blocked the conversation with the bot.

We have confirmed that the conversation exists and that the user has not blocked the conversation but these errors are still being returned.

Additionally we haven't changed any code from our end and have been using the same way to send messages for the past year or so.

Assumed maybe it could be due to rate limiting issues but that doesn't seem to be the case as it throw errors when trying to send the messages individually.

Robin Sheng-MSFT 3,050 Reputation points Microsoft Vendor

2024-07-31T01:18:20.38+00:00

Hi @Lance Lee

Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is related to Teams Development which is not in our support scope. To better help you solve your problem, we will add the Teams Development tag to your post. Thanks for your understanding and patience!
Prasad-MSFT 6,776 Reputation points Microsoft Vendor

2024-07-31T05:50:42.9933333+00:00

Even though you mentioned that users have not blocked the conversation, it's worth double-checking if there are any intermittent issues or temporary blocks that might be causing this error. Also, ensure that the conversation state is being managed correctly. Sometimes, if the state is not properly maintained, it can lead to errors like "Conversation not found."
Lance Lee 5 Reputation points

2024-07-31T06:22:08.43+00:00

@Prasad-MSFT Could you elaborate more on the conversation state?

We've also come across another thread where we have to call the REST API create conversation endpoint to fix this issue.

Similar to this, we have had to call the get chat endpoint to fix some of the Conversation not found. issues we experienced in the past, however this doesn't seem to be the case currently and doesn't seem to resolve the issue anymore.

There also seems to be a weird case where when we send a group of messages to different conversations at the same time using the same CloudAdapter instance, they are returning the same error for all the messages.
When we send the messages in the group separately they seem to be sending successfully.

Doesn't seem to be a rate limiting issue as we are sending 3 messages at a time every minute.
Prasad-MSFT 6,776 Reputation points Microsoft Vendor

2024-08-01T07:04:36.84+00:00

The conversation state in the Bot Framework is used to store and retrieve state data associated with a specific conversation. This allows the bot to remember the context of the conversation and manage its behavior accordingly. The Bot Framework SDK provides state management and storage objects to manage and persist state. The state manager provides an abstraction layer that lets you access state properties using property accessors, independent of the type of underlying storage. https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-howto-v4-state?view=azure-bot-service-4.0&tabs=csharp

https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-concept-state?view=azure-bot-service-4.0#state-management

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Sending message via Microsoft Teams Bot Builder

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