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A faster, lighter C# Dev Kit
C# Dev Kit has been rebuilt to open solutions in about a second and run on a fraction of the memory, and this post walks through what changed for you.
UWP and WinUI 3 apps: UI testing with MSTest
Learn how to test UWP and WinUI 3 apps with MSTest and Microsoft.Testing.Platform across packaged, unpackaged, and AppContainer hosts.
Build Agentic UI with the new Blazor AI components
Build Agentic UI with the new Blazor AI components for streamed content, tools, approvals, shared state, and generative experiences.
AG-UI Protocol now has a first-class .NET SDK
The new AG-UI .NET SDK enables .NET services to expose and consume interoperable agent endpoints using Microsoft.Extensions.AI.
Microsoft is updating its author-signing certificate starting September 23, 2026
Starting September 23, 2026, Microsoft is updating the author-signing certificate used for NuGet packages. Customers using trusted signer policies or certificate fingerprint verification should add the new certificate as soon as possible.
Creating a memory dump in C#
Learn how to create a memory dump in C# to capture the state of your application for debugging purposes.
Build Your Own AI Agent Harness in C#, the MafClaw Live Series
I am building a complete C# agent live, from a single call around an IChatClient to a production-ready, observable, governed agent, using the Microsoft Agent Framework harness in a 4-part Microsoft Reactor series.
Performance Improvements in .NET 11
Take a tour through hundreds of performance improvements in .NET 11.
Share your .NET story with the community
Share how your team uses .NET to solve real problems and help us bring more community stories to .NET Conf 2026 and other .NET channels.