Microsoft Developer

Dive into the biggest news from Microsoft Build and learn how to start building with it today 👇

[Microsoft Developer @msdev]

WSL container is now available for public preview.

That means you can create, run, test, and debug Linux containers directly through WSL on Windows.

Here’s how to get started + a few ways to try it 🧵

[Microsoft Azure @Azure]

Your agent worked, it shipped… but it leaked your data.

In this #AzureFriday, @shanselman and Sajeetharan Sinnathurai show how Agent Kit helps catch missing partition key filters, fix fan-out queries, and prevent cross-tenant data leaks.

Watch: https://t.co/OknmlpQ0Un

[Microsoft Developer @msdev]

@SQLEspresso Let's gooooo! Congratulations 🎉

[Microsoft Developer @msdev]

A great chance to get hands-on with the GitHub Copilot app and learn how to explore issues, build features, and review changes in parallel, all without switching between tools.

[GitHub @github]

Beginner-friendly sessions, in multiple languages. Register now for Let's Learn GitHub Copilot app 👇
https://t.co/2FsWj8Ci42

[Microsoft Azure @Azure]

In this episode of #AzureFriday, @shanselman and Charles Feddersen explore Azure HorizonDB, covering performance and scale, AI Pipelines, and AI-powered PostgreSQL developer productivity using VS Code. Watch now: https://t.co/apLLWqTtxO

[Microsoft Developer @msdev]

A dev machine spent 39 days building a collaborative word processor largely on its own.

It ran 565 sessions, made 3,706 commits, completed 1,111 features, and still never added a ruler.

Explore what it revealed about agentic development and why human judgment still matters.

https://t.co/Qv5NCWLumN

[Microsoft Developer @msdev]

OpenAI’s GPT-5.6 family is rolling out in GitHub Copilot.

GPT-5.6 comes in three variants, Sol, Terra, and Luna, giving you more flexibility to match the model to the work in front of you.

[Microsoft Developer @msdev]

@Lexcyn @shanselman Well, there goes my afternoon.

[GitHub @github]

Build smarter with the new GitHub Copilot app. 💡

Join our Let's Learn virtual sessions and find out how this all-in-one control center can help you optimize your workflow with agent-driven development.

Sign up for your session in English, Korean, Chinese, Japanese, Spanish, or Portuguese. 🗓️
https://t.co/dl62TnerXt

[TypeScript @typescript]

📣 The moment is here. 📣

TypeScript 7 is officially released! 7️⃣

https://t.co/D7Mbq7vWpy

[Visual Studio Code @code]

🚀 Build and test web apps right in the browser with @code!

Pages can now request camera, location, and device access with per-site approval prompts. The Agents window (Preview) also introduces guided onboarding tours to help you get started faster.

[GitHub @github]

🆕 @Kimi_Moonshot's Kimi K2.7 Code is now generally available in GitHub Copilot.

This is the first open-weight model offered as a selectable option in the Copilot model picker. 🎉

Early testing shows Kimi K2.7 is a lower-cost option with strong performance comparable to highly popular frontier models.

Try it out now in @code and look out for it in more GitHub Copilot surfaces. 👇
https://t.co/ER2bGMNs7i

[Microsoft Developer @msdev]

Check out all the sessions here: https://t.co/dNU3sj0gLo

[Microsoft Developer @msdev]

Azure Cosmos DB Conf 2026 is now on demand and we’re sharing some top sessions from the event.

Check out the blog for more info: https://t.co/0Mh7i0WfGZ

[Microsoft Developer @msdev]

Andrew Ruffin, Senior Product Manager at AMD, joins Azure Cosmos DB Conf 2026 to talk about the hardware quietly powering the database you rely on every day.

Tune in: https://t.co/9wjDvNMJHG

[Microsoft Developer @msdev]

Try it out, build something weird, and send the team feedback on GitHub.

Read more 👇
https://t.co/eUtIMwVLf6

[Microsoft Developer @msdev]

And if you use VS Code Dev Containers, you can plug WSL containers into that workflow too.

WSLc support is available in the VS Code Dev Containers pre-release. To try it, open Dev Container settings, find “Docker Path,” and set it to: wslc

[Microsoft Developer @msdev]

Then bring Linux containers into your Windows apps.

The new WSL container API lets Windows apps use Linux containers as part of their app logic, with support for C, C++, and C#.

Think local cloud app workflows, Linux-specific code, or contained processes.

[Microsoft Developer @msdev]

Start with the command line.

With wslc, you can run Linux containers as part of your everyday dev workflow, from running apps locally to testing GPU access.

There’s also a built-in container.exe alias, so you can use either wslc or container.

[Microsoft Developer @msdev]

First, update to the latest WSL pre-release by running:

wsl --update --pre-release

Once updated, you’ll have access to wslc.exe, the new WSL container CLI.

[Microsoft Developer @msdev]

WSL container is now available for public preview.

That means you can create, run, test, and debug Linux containers directly through WSL on Windows.

Here’s how to get started + a few ways to try it 🧵