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Build your own claw and agent harness with Microsoft Agent Framework
What does it take to build your own "claw" - a capable, CLI-style agent that can plan, use tools, remember things, and safely act on your behalf? Coding agents and assistants like these can feel like magic, but underneath they are an agent harness: a loop around a language model wired up...
Read moreClick to read more about this postIn memory of the man who put red and green squiggles under words
Starting in Word and expanding to nearly every other word processor, and even things that aren't word processors.
Read moreClick to read more about this postStop overloading your skills
You built a skill for your technology. API references, authentication flows, SDK patterns, error handling, version info, all packed into one skill. The agent calls it, gets all that context, and generates code. The kicker? You've just wasted a lot of tokens.
It already knows
Models have...
Read moreClick to read more about this postLatest posts
Jun 30, 2026
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Mailbox requirement set 1.16 now available for Outlook add-ins
Mailbox requirement set 1.16 is now generally available for Outlook add-ins. This release reflects our continued investment in closing the gap between COM/VSTO and web add-ins, with a focus on message and information security.
Mailbox 1.16 introduces APIs and platform updates that...
Microsoft 365 Developer Blog
Jun 30, 2026
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A compatibility note on the abuse of Windows window class extra bytes
Finding an illicit place to hide data.
The Old New Thing
Jun 30, 2026
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🚀React Native Windows v0.84 is here!!
Vineeth,
Vivek,
Sourav
We're excited to release React Native Windows 0.84.0, aligned with React Native 0.84.1. React Native Windows v0.84 delivers input-handling improvements such as standard click events and imperative focus, theme-aware defaults and robust hit-testing semantics.
🔥 What's New in RNW...
React Native
Jun 29, 2026
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.NET 8 and .NET 9 will reach End of Support on November 10, 2026
.NET 8 and .NET 9 will both reach end of support on November 10, 2026. Learn what this means and how to upgrade to .NET 10 (LTS).
.NET Blog
Jun 29, 2026
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SkiaSharp 4.0 is here: announcing the first stable release
SkiaSharp 4.148.0 is the first stable release of SkiaSharp v4. Learn what is new, why you should be excited, and join the SkiaSharp live event on June 30.
.NET Blog
Jun 29, 2026
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Packaging and Package Identity for .NET apps with WinApp CLI on Windows
Use the WinApp CLI to add identity to and package .NET desktop applications, enabling deeper integration to Windows and easier distribution.
.NET Blog
Jun 29, 2026
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WSL container is now available for public preview
At Microsoft Build 2026, we introduced WSL containers, bringing Linux container development directly into Windows through the Windows Subsystem for Linux (WSL). Containers have become a foundational part of modern development - from cloud-native applications and AI workloads to testing...
Windows Command Line
Jun 29, 2026
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Automating your Visual Studio extension builds with GitHub Actions
If you’re building and maintaining Visual Studio extensions, you’ve probably ended up with some sort of build and publishing workflow - whether it’s manual, scripted, or stitched together over time.
This post is for extension authors who want a simple, repeatable way to build,...
Visual Studio Blog
Jun 29, 2026
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The evolution of window and class extra bytes in Windows
The intended usage is encoded in the prefix.
The Old New Thing