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APPLIES TO: SDK v4
We are in the process of archiving the Bot Framework SDK repository on GitHub. This means that this project is no longer updated or maintained. However, customers using this tool should not be disrupted. The tool is no longer supported through service tickets in the Azure portal and does not receive product updates.
Important
The Bot Framework SDK and Bot Framework Emulator have been archived on GitHub. The project is no longer updated or maintained. Support tickets for the Bot Framework SDK will no longer be serviced as of December 31, 2025.
To build agents with your choice of AI services, orchestration, and knowledge, consider using the Microsoft 365 Agents SDK. The Agents SDK has language support for C#, JavaScript or Python. You can learn more about the Agents SDK at aka.ms/agents. If you have an existing bot built with the Bot Framework SDK, you can update your bot to the Agents SDK. Review the core changes and updates at Bot Framework SDK to Agents SDK migration guidance.
If you're looking for a SaaS-based agent platform, consider Microsoft Copilot Studio.
For historical release notes for each version, see the C# releases, JavaScript releases, Python release, and Java releases pages.