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Highlights

In 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.
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Stop 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...
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Jun 30, 2026
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SharePoint Framework (SPFx) roadmap update – July 2026

Vesa Juvonen
June celebrates the announcement of upcoming SharePoint Copilot Apps, ships the quality-focused SPFx 1.23.2 release, and shares the roadmap for the AI era - shaped by your feedback.
Microsoft 365 Developer Blog
Jun 30, 2026
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Compose your API surface with Data API builder custom paths

Jerry Nixon
Data API builder (DAB) 2.0 adds compound paths for REST endpoints, giving developers more control over how their API surface is organized. Instead of mirroring database topology, endpoints can now reflect simple names, business areas, or schema ownership.
Azure SQL Dev Corner
Jun 30, 2026
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MCP Beyond the Chat Window: Build Diagnostics in CI

Jan,
Yuliia
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.
.NET Blog
Jun 30, 2026
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MSIX Per-User vs All Users: Install, Provision, and Uninstall Packages

Howard Kapustein
MSIX supports making a package available to all users; the formal term is provisioning. Provisioning a package family makes it available to all users, whereas registration makes a package available to a single user. Per-User vs All Users Traditional installers often provide a...
Inside MSIX
Jun 30, 2026
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Mailbox requirement set 1.16 now available for Outlook add-ins

Office Extensibility team
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

Raymond Chen
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

Rahul Bhandari (MSFT)
.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

Matthew Leibowitz
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