4,146 questions
I think its 40kb,
please refer: https://techcommunity.microsoft.com/t5/teams-developer/bot-message-limitation-and-alternative-for-that-limitation/m-p/3941571
What is the size limit for attachment sent from Azure Bots into Microsoft Teams?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(67.2, 19%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
eeron
0
Reputation points
Hi,
We would like to create an Azure Bot and connect it into Microsoft teams. Our main goal is to send PowerPoint attachments that varies in size. We would like to know the size limit when sending those attachments using Azure Bots into Microsoft Teams through Azure Bot Channels.
Thanks!
Microsoft Teams | Development
{count} votes
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Umesh Pandit 21 Reputation points2024-05-28T07:13:56.1233333+00:00 I think it is 40kb
please refer: https://techcommunity.microsoft.com/t5/teams-developer/bot-message-limitation-and-alternative-for-that-limitation/m-p/3941571
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 78%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPM%3C/text%3E%3C/svg%3E)
Prasad-MSFT 9,061 Reputation points Microsoft External Staff Moderator2024-05-29T13:54:24.83+00:00 According to this document:
The bot message size limit is 40 KB. If the bot message size limit exceeds 40 KB, bot receives a413status code (RequestEntityTooLarge), which contains the error codeMessageSizeTooBig. The bot message size limit includes the entire message payload encoded as UTF-16 and doesn't include Base64 encoded images.
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