Microsoft
Developer Blogs
Get the latest information, insights, and news from Microsoft.
Highlights
MCP Beyond the Chat Window: Build Diagnostics in CI
A practical tour of the Model Context Protocol tools for .NET build diagnostics - the full Binlog MCP toolset, how those tools run inside a GitHub Actions workflow, and what the evaluation data says about the efficiency gains.
Read moreClick to read more about this postNot all model upgrades are upgrades
A new model drops with lower per-token pricing and better benchmarks. You switch. A week later someone asks why the agent is burning 12x more tokens on the same task while producing worse output.
We ran 150 agent tasks across 15 scenarios on two models, Claude Sonnet 4.6 and Claude...
Read moreClick to read more about this postLatest posts
Jul 10, 2026
Post comments count0
Post likes count0
Go 1.26.5-2 Microsoft build now available
A new release of the Microsoft build of Go is now available for download.
Microsoft for Go Developers
Jul 10, 2026
Post comments count1
Post likes count1
The case of the mysterious changes to integers when there shouldn't have been any code generation effect
Decoding where those integer came from.
The Old New Thing
Jul 10, 2026
Post comments count0
Post likes count0
Shrinking Azure Pipeline task extensions using esbuild
TL;DR
We bundled an internal Azure Pipelines task extension into a single bundled JavaScript file using esbuild. The task package dropped from tens of megabytes and thousands of files to three files per task ( script.js , task.json , and icon.png ). The change took about 20 lines...
Azure DevOps Blog
Jul 10, 2026
Post comments count0
Post likes count0
Microsoft Agent Framework for Go public preview
Microsoft Agent Framework for Go is entering public preview, bringing Agent Framework concepts to Go developers building agents and multi-agent workflows.
Microsoft for Go Developers
Jul 9, 2026
Post comments count0
Post likes count0
Pure Virtual C++ 2026 [Meet the Speakers, Part 1]: Build Faster, Run Faster
Meet the speakers behind Pure Virtual C++ 2026. In part one, Ryan Shepherd and David Li show how to build faster and smaller with C++20 modules and GitHub Copilot build performance.
C++ Team Blog
Jul 9, 2026
Post comments count4
Post likes count3
Modernize .NET applications in the GitHub Copilot app
Modernize .NET applications in the GitHub Copilot app. Follow your upgrade from assessment through execution in an interactive upgrade canvas.
.NET Blog
Jul 9, 2026
Post comments count0
Post likes count3
SharePoint Copilot Apps Now in Public Preview: From Intent to Action in Microsoft 365 Copilot
SharePoint Copilot Apps are now in public preview, introducing a new way to bring guided, action-oriented business experiences into Microsoft 365 Copilot. By combining natural language reasoning with structured UX, validation, permissions, and deterministic operations, organizations can help users move from intent to trusted outcomes directly in the Copilot flow.
Microsoft 365 Developer Blog
Jul 9, 2026
Post comments count0
Post likes count1
I've decoded a #pragma detect_mismatch error and fixed the mismatch, but I still get the error
You need to rebuild everything that was dependent on the change.
The Old New Thing
Jul 9, 2026
Post comments count0
Post likes count0
Agent Harness: Scaling the claw or harness capabilities
Part 3 of Build your own claw and harness with Microsoft Agent Framework.
In Part 2 our personal finance assistant learned to work with your data safely: it reads your portfolio, asks before it trades, and remembers what matters across sessions. It's useful - but everything it knows is...
Microsoft Agent Framework