Dev Blogs
.NET Conf returns November 10-12, 2026, with three days of sessions, community, and the launch of .NET 11.
You built an agent with Microsoft Agent Framework and it works great on your machine. Now what? Turns out deploying it to production takes 1 NuGet package, 3 lines of C#, and 2 commands. Let's do it.
C# 15 ships with .NET 11. It adds union types, closed hierarchies, a preview of the updated unsafe model, and a few smaller changes that remove everyday ceremony.
Route requests across models and providers natively in Microsoft.Extensions.AI with RoutingChatClient, SemanticRoutingChatClient, and FailoverChatClient — new experimental primitives for content-based routing, failover, and custom routing policies.
Get the most out of the latest models by providing the right level of instructions
Find out about the new features in .NET 11 Preview 7 across libraries, runtime, SDK, C#, ASP.NET Core, .NET MAUI, Entity Framework Core, F#, and Windows Forms.
A recap of the latest servicing updates for .NET and .NET Framework for August 2026.
Microsoft.Testing.Platform brings failures into GitHub Actions and Azure DevOps, uses pipeline history to separate regressions from flakes, and preserves usable reports when a test host crashes.
Build a live speech-to-text app in C# with Foundry Local, a compact Nemotron model, and local model lifecycle management.
NuGet API key durations will be reduced to 30 days starting August 17th. This change will significantly strengthen the integrity of the NuGet supply chain.