.NET Blog
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Announcing .NET 10
Announcing the release of .NET 10, the most productive, modern, secure, intelligent, and performant release of .NET yet. With updates across ASP.NET Core, C# 14...
Latest posts
.NET 10.0.7 Out-of-Band Security Update
We are releasing .NET 10.0.7 as an out-of-band security update to address CVE-2026-40372.
Writing Node.js addons with .NET Native AOT
The C# Dev Kit team replaced C++ Node.js addons with C# and Native AOT, removing a dependency on Python. This post walks through building a Node.js native addon entirely in C# using N-API, LibraryImport, and UnmanagedCallersOnly.
Pin Clustering in .NET MAUI Maps
.NET MAUI 11 adds pin clustering to the Map control, automatically grouping nearby pins into cluster markers. Learn how to enable clustering, create separate clustering groups, and handle cluster taps on Android and iOS.
.NET and .NET Framework April 2026 servicing releases updates
A recap of the latest servicing updates for .NET and .NET Framework for April 2026.
.NET 11 Preview 3 is now available!
Find out about the new features in .NET 11 Preview 3 across the .NET runtime, SDK, libraries, ASP.NET Core, .NET MAUI, C#, Entity Framework Core, container images, and more!
Your Migration’s Source of Truth: The Modernization Assessment
Introducing GitHub Copilot Modernization and diving into the assessment report as part of cloud modernization process
ASP.NET Core 2.3 end of support announcement
ASP.NET Core 2.3 will reach end of support on April 13, 2027. Learn what this means for your applications and how to upgrade to a modern supported version of .NET.
Explore union types in C# 15
C# 15 introduces union types — declare a closed set of case types with implicit conversions and exhaustive pattern matching. Try unions in preview today and see the broader exhaustiveness roadmap.
Generative AI for Beginners .NET: Version 2 on .NET 10
Announcement of Version 2 of Generative AI for Beginners .NET, a free course rebuilt for .NET 10 with Microsoft.Extensions.AI, updated RAG patterns, and new agent framework content across five structured lessons for building production-ready AI apps.
Ten Months with Copilot Coding Agent in dotnet/runtime
After ten months using GitHub Copilot Coding Agent (CCA) in dotnet/runtime, the .NET team shares data-driven lessons on cloud-AI-assisted development.
Accelerating .NET MAUI Development with AI Agents
Learn how custom-built AI agents are dramatically improving the .NET MAUI contribution workflow, reducing issue resolution time by 50-70% while increasing test coverage and code quality.
RT.Assistant: A Multi-Agent Voice Bot Using .NET and OpenAI
Guest blog post on building a real time assistant using OpenAI Realtime API using .NET, F#, Microsoft.Extensions.AI and .NET MAUI.
Modernize .NET Anywhere with GitHub Copilot
See how the modernize-dotnet agent helps you assess apps, create upgrade plans, and modernize .NET projects from Visual Studio, VS Code, GitHub Copilot CLI, and GitHub.
.NET 10.0.5 Out-of-Band Release – macOS Debugger Fix
An out-of-band release of .NET 10.0.5 to fix a critical debugger crash affecting macOS users with Visual Studio Code.
.NET 11 Preview 2 is now available!
Find out about the new features in .NET 11 Preview 2 across the .NET runtime, SDK, libraries, ASP.NET Core, Blazor, C#, .NET MAUI, and more!
.NET and .NET Framework March 2026 servicing releases updates
A recap of the latest servicing updates for .NET and .NET Framework for March 2026.
Extend your coding agent with .NET Skills
Introducing the dotnet/skills repository and how .NET agent skills can improve coding agent workflows.
Release v1.0 of the official MCP C# SDK
Discover what’s new in the v1.0 release of the official MCP C# SDK, including enhanced authorization, richer metadata, and powerful patterns for tool calling and long-running requests.
Vector Data in .NET – Building Blocks for AI Part 2
Discover how Microsoft.Extensions.VectorData brings unified vector database access to .NET - one interface for semantic search across any vector store with built-in support for embeddings, filtering, and RAG patterns.
The Dongle Died at Midnight – WinForms Agent Saved my German Mom’s Business Trip
Vibe Coding. IntelliSense on Steroids. Intention-Based Development. Call it what makes you happy - it's "just" the next evolutionary step in software development for me. Which let me build my stranded 82-year-old retirement-resistant mom an ersatz time-study app when her dongle died at midnight.
GitHub Copilot Testing for .NET Brings AI-powered Unit Tests to Visual Studio 2026
GitHub Copilot testing for .NET is now available in Visual Studio 18.3, offering AI-powered tools to quickly create, build, and run unit tests. With flexible prompts and full IDE integration, it supports testing from single methods to entire solutions, helping reduce repetitive tasks and speed up feedback. Try it and share your feedback to shape its future.
.NET 11 Preview 1 is now available!
Find out about the new features in .NET 11 Preview 1 across the .NET runtime, SDK, libraries, ASP.NET Core, Blazor, C#, .NET MAUI, and more!
.NET and .NET Framework February 2026 servicing releases updates
A recap of the latest servicing updates for .NET and .NET Framework for February 2026.
.NET Framework 3.5 Moves to Standalone Deployment in new versions of Windows
An announcement of .NET Framework 3.5 servicing updates on new versions of Windows.
.NET AI Essentials – The Core Building Blocks Explained
Learn how Microsoft.Extensions.AI provides a unified API for building intelligent .NET applications with any LLM provider - one interface, endless possibilities, with built-in middleware, telemetry, structured outputs and more.
Join Microsoft at NDC London 2026 – Let’s Build the Future of .NET Together
Meet the .NET team at NDC London 2026 to explore the latest in .NET 10, Azure, and AI-powered development through sessions and 1:1 meetups.
.NET and .NET Framework January 2026 servicing releases updates
A recap of the latest servicing updates for .NET and .NET Framework for January 2026.