Microsoft
Developer Blogs

Get the latest information, insights, and news from Microsoft.

Announcing Sponsorship on NuGet.org

Announcing Sponsorship on NuGet.org - An easy way to recognize package maintainers and grow the NuGet community stronger!

Upgrading to Microsoft Agent Framework in Your .NET AI Chat App

Step-by-step review on how to upgrade your .NET AI chat app to Microsoft Agent Framework for better architecture, tool integration, and intelligent reasoning.

How did the Windows 95 user interface code get brought to the Windows NT code base?

Ported bit by bit.

Oct 29, 2025

New GitHub Copilot capabilities for C++ developers: Upgrade MSVC, improve build performance, and refactor C++ code

Erika Sweet

Yesterday at GitHub Universe, GitHub announced support for custom agents. Custom agents are specialized configurations with custom prompts and context that focus Copilot on specific development tasks. On the C++ team, we have a similar goal: Provide differentiated capabilities that...

C++ Team Blog

Microsoft for Java Developers Feature Image

Oct 29, 2025

Java OpenJDK October 2025 Patch & Security Update

Derek Keeler

Hello Java customers! We are happy to announce the latest July 2025 patch & security update release for the Microsoft Build of OpenJDK. Download and install the binaries today. OpenJDK 25.0.1 OpenJDK 21.0.9 OpenJDK 17.0.17 OpenJDK 11.0.29 Check our release notes...

Microsoft for Java Developers

Oct 29, 2025

Migrating from IDCRL authentication to modern authentication in SharePoint

SharePoint team

In the next few months, Microsoft will be removing the legacy authentication protocol known as IDCRL (Identity Client Run Time Library) in SharePoint.

Microsoft 365 Developer Blog

Oct 29, 2025

Put your AI to the Test with Microsoft.Extensions.AI.Evaluation

McKenna,

Shyam

AI is changing how we build software, but it also introduces new challenges: how do you know if your AI application is giving the right answers and producing the right outcomes? Evaluations (often referred to simply as ‘evals’) provide a structured way to measure quality so you can...

Microsoft for Developers

Oct 29, 2025

Deprecation of the previewImageUrl property for Insights items that reference file attachments

Microsoft Graph team

The previewImageUrl property is no longer returned for file attachment items.

Microsoft 365 Developer Blog

Oct 29, 2025

What to do when you have a crash in the runtime control flow guard check

Raymond Chen

You don't have to understand it, but you should be able to extract data from it.

The Old New Thing

Oct 28, 2025

MCP Registry and Allowlist Controls Now Available in GitHub Copilot for Xcode (Public Preview)

Jialuo Gan

We’re excited to announce that MCP Registry and Allowlist Controls in GitHub Copilot for Xcode are now available in public preview in pre-release builds. These capabilities help Xcode developers discover, install, and manage Model Context Protocol (MCP) servers directly in the IDE,...

Xcode