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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.
Read moreClick to read more about this postTake full control of your floating windows in Visual Studio
Make Visual Studio floating windows work perfectly with PowerToys FancyZones. Flip one option to get independent windows, better snapping, and less friction.
Read moreClick to read more about this postMCP Apps on Azure Functions: Quickstart with TypeScript
Learn how to build and deploy MCP (Model Context Protocol) apps on Azure Functions using TypeScript. This guide covers MCP tools, resources, local development, and serverless deployment with a practical weather app example.
Read moreClick to read more about this postLatest posts
Mar 13, 2026
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Windows stack limit checking retrospective: MIPS
Optimizing out the unnecessary probes comes with its own complexity.
The Old New Thing
Mar 13, 2026
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What's New in Agent Skills: Code Skills, Script Execution, and Approval for Python
Code-Defined Skills, Script Execution, and Approval for Agent Skills in Python
When we introduced Agent Skills for Microsoft Agent Framework, you could package domain expertise as file-based skill directories and have agents discover and load them on demand. Now, the Python SDK takes...
Microsoft Agent Framework
Mar 13, 2026
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How VS Code Builds with AI
Learn how VS Code uses AI across its own development workflow with GitHub Copilot agent mode, automated testing, and AI-powered code review.
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VS Code Blog
Mar 12, 2026
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Evolving DirectX for the ML Era on Windows
Adele,
Serena
At GDC this year, we shared how machine learning is becoming foundational to real time graphics, and how DirectX is evolving to meet that shift across shader level and model level ML. ML is no longer a niche optimization or a postprocess trick. It’s increasingly embedded throughout the...
DirectX Developer Blog
Mar 12, 2026
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Microsoft at JavaOne: Empowering Java developers to lead the next era of AI
Java has powered some of the world’s most mission‑critical systems for decades and that’s a big part of why we’re excited to be back with the community at JavaOne 2026 (March 17–19 in Redwood City). At Microsoft, we get to work with Java teams every day: folks shipping at...
Microsoft for Java Developers
Mar 12, 2026
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Agent Harness in Agent Framework
Dmytro,
Chris,
Eduard
Agent harness is the layer where model reasoning connects to real execution: shell and filesystem access, approval flows, and context management across long-running sessions. With Agent Framework, these patterns can now be built consistently in both Python and .NET.
In this post,...
Microsoft Agent Framework
Mar 12, 2026
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DirectX: Bringing Console-Level Developer Tools to Windows
Norman,
Austin
On March 12th, 2026, the DirectX team and our hardware partners hosted DirectX: Bringing Console-Level GPU Developer Tools to Windows at GDC. We shared our dream of bringing console-level GPU developer tools to Windows, and today we are announcing a major step toward that goal...
DirectX Developer Blog
Mar 12, 2026
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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 Blog
Mar 12, 2026
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.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 Blog