Microsoft
Developer Blogs

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

Highlights

Abstract digital background with flowing green luminous waves and scattered light particles against a dark backdrop, evoking data streams and technology connectivity. Text:

Stop prompt injection from hijacking your agent, new security capabilities now released within Agent Framework

Prompt injection is the #1 risk on the OWASP LLM Top 10, and most agents in production today defend against it with one of two heuristics: a defensive system prompt, or a hand-rolled allowlist. Neither is deterministic. Both fail silently the day someone slips a [SYSTEM OVERRIDE] line...
Read moreClick to read more about this post

Announcing Agent Governance Toolkit MCP Extensions for .NET

Announcing a Public Preview .NET package that adds policy enforcement, startup tool scanning, fallback governance, and response sanitization to MCP servers with a single builder extension.
Read moreClick to read more about this post

Latest posts

Apr 29, 2026
Post comments count0
Post likes count1

Announcing the Private Preview of Cosmos DB Azure RBAC Integration

Sudhanshu Khera
Introduction Managing access to Azure resources often means dealing with two separate permission models: one for management operations and another for data access. For Azure Cosmos DB customers, this split can increase complexity, slow down onboarding, and create confusion around...
Azure Cosmos DB Blog
Apr 29, 2026
Post comments count0
Post likes count0

Azure DocumentDB (with MongoDB compatibility) for Banking: A Modern Customer 360 Approach

Srikanth Sridhar
Introduction: Transforming Customer Intelligence in Banking Every day, people interact with their bank across mobile apps, branches, call centers, ATMs, chatbots, and partner ecosystems. Each touchpoint holds a piece of the customer story but rarely the whole picture. For many...
Azure Cosmos DB Blog
Apr 29, 2026
Post comments count4
Post likes count1

Announcing Microsoft Desired State Configuration v3.2.0

Jason Helmick
This post announces the General Availability of Microsoft Desired State Configuration (DSC) v3.2.0, with new Windows resources, Bicep gRPC integration, WhatIf support, expression language improvements, and adapter enhancements.
PowerShell Team
Apr 29, 2026
Post comments count2
Post likes count0

VSTest is Removing its Newtonsoft.Json Dependency

McKenna Barlow
VSTest is removing its Newtonsoft.Json dependency in .NET 11 and Visual Studio 18.8. Here's who is affected and how to fix it.
.NET Blog
Apr 29, 2026
Post comments count0
Post likes count1

Governing MCP tool calls in .NET with the Agent Governance Toolkit

Jack Batzner
Learn how to govern MCP tool calls in .NET with the Agent Governance Toolkit—policy-based access control, security scanning, and response sanitization to reduce risk in AI agent systems.
.NET Blog
Apr 29, 2026
Post comments count1
Post likes count0

General Availability: Refresh Token (RT) Transfer to Apple Watch in Microsoft Entra External ID Native Authentication

Sasha Mars
We’re excited to announce the General Availability (GA) of Single Sign-On (SSO) from Native Apps to Embedded Web Views for Microsoft Entra External ID (EEID) Native Authentication. This release marks a major milestone in delivering end-to-end seamless authentication experiences for...
Microsoft Entra Identity Platform
Apr 29, 2026
Post comments count3
Post likes count1

SDK-Style Support for Extension Projects

Matt Clark
Starting in Visual Studio 18.5, you can create and build Visual Studio extensions (VSIX) using an officially supported SDK-style project. This brings VSIX projects into the modern build and deployment pipeline, improving incremental build performance and making the build → deploy →...
Visual Studio Blog
Apr 29, 2026
Post comments count1
Post likes count2

Developing a cross-process reader/writer lock with limited readers, part 2: Taking turns when being grabby

Raymond Chen
Please, not everybody, everything all at once.
The Old New Thing
Apr 29, 2026
Post comments count0
Post likes count0

The New Loop: How Power Pages Builds Software with AI

Priyanshu Agrawal
Introduction When I started writing software professionally in 2015, the tech landscape looked completely different. Tools and frameworks kept evolving since then, but the process of building software barely moved for a decade. That changed in the last couple of months. Here's what has...
Power Platform Developer Blog