The .NET Insider – Issue 15

Your Digest of .NET Updates, Tools, and Insights

Author

Levan Jintcharadze
December 03, 2025

Your Monthly Dive into .NET Updates.

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, .NET MAUI, Aspire, and so much more.

devblogs.microsoft.com/dotnet/announcing-dotnet-10

.NET and .NET Framework November 2025 servicing releases updates

A recap of the latest servicing updates for .NET and .NET Framework for November 2025.

devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-november-2025-servicing-updates

Introducing C# 14

Learn what features are in C# 14, which ships as part of .NET 10.

devblogs.microsoft.com/dotnet/introducing-csharp-14

Visual Studio 2026 is here: faster, smarter, and a hit with early adopters

Dear developers, We’re thrilled to announce that Visual Studio 2026 is now generally available! This is a moment we’ve built side by side with you.

devblogs.microsoft.com/visualstudio/visual-studio-2026-is-here-faster-smarter-and-a-hit-with-early-adopters

Aspire 13 - Aspireify anything

Aspire 13 is here with revamped JS and Python experiences, new AI-focused grations, and a new iteration of deployment tooling.

devblogs.microsoft.com/aspire/aspire13

OpenAPI.NET: The Biggest Update Ever - OpenAPI at Microsoft

A celebratory announcement of what is new in OpenAPI.NET v2 and v3.

devblogs.microsoft.com/openapi/openapi-net-release-announcements

A first look at the all‑new UX in Visual Studio 2026

Visual Studio 2026 introduces a refreshed user experience, thoughtfully crafted for clarity, accessibility, and a clean interface that feels right at home on Windows. This update is the result of extensive collaboration with developers and incorporates valuable feedback from the community.

devblogs.microsoft.com/visualstudio/a-first-look-at-the-all%e2%80%91new-ux-in-visual-studio-2026

Azure MCP Server Now Built-In with Visual Studio 2026: A New Era for Agentic Workflows

Discover how Azure MCP Server integrates with Visual Studio 2026 to revolutionize your Azure development experience and efficiency.

devblogs.microsoft.com/visualstudio/azure-mcp-server-now-built-in-with-visual-studio-2026-a-new-era-for-agentic-workflows

Tutorial Videos: Setting up GitHub Copilot for your Company

This guide shares a series of videos that walk you through setting up GitHub and GitHub Copilot end-to-end for your company. These are especially useful

devblogs.microsoft.com/all-things-azure/tutorial-videos-setting-up-github-copilot-for-your-company

Running a Vite Frontend from .NET Aspire

One of the nicest features of .NET Aspire is that it can orchestrate not just APIs and databases, but also frontends.

rasper87.blog/2025/10/28/running-a-vite-frontend-from-net-aspire

Cozy Aspire Dashboarding

The Aspire dashboard is your home for local development. Let's explore customizing it with friendly URLs and icons for a cozier experience.

victorfrye.com/blog/posts/cozy-aspire-dashboarding

Supercharge Your Test Coverage with GitHub Copilot Testing for .NET

Boost your testing workflow with GitHub Copilot testing for .NET, available now in Visual Studio. Automatically generate, build, and run high-quality unit tests for files, projects, or entire solutions.

devblogs.microsoft.com/dotnet/github-copilot-testing-for-dotnet

Reinventing how .NET Builds and Ships (Again)

An exploration of how .NET evolved from a distributed build system to Unified Build, dramatically reducing complexity and build times while improving flexibility and predictability for shipping .NET releases.

devblogs.microsoft.com/dotnet/reinventing-how-dotnet-builds-and-ships-again

How Copilot Studio uses .NET and WebAssembly for performance and innovation

Learn how Microsoft Copilot Studio uses .NET to provide a consistent AI agent execution across platforms, including on the web via WebAssembly.

devblogs.microsoft.com/dotnet/copilot-studio-dotnet-wasm

Introducing F# 10

Learn about new F# 10 language features, performance upgrades, and tooling improvements shipping with .NET 10.

devblogs.microsoft.com/dotnet/introducing-fsharp-10

Post-Quantum Cryptography in .NET

What we've added for PQC, and how we got there.

devblogs.microsoft.com/dotnet/post-quantum-cryptography-in-dotnet

A step-by-step guide to modernizing .NET applications with GitHub Copilot agent mode

Learn how Visual Studio 2026 and GitHub Copilot app modernization upgrade .NET versions and frameworks, fix build issues, and migrate apps to Azure with less manual effort

devblogs.microsoft.com/dotnet/modernizing-dotnet-with-github-copilot-agent-mode

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