Everything you need to know to develop great apps, games and other experiences for and on Windows.
Redmond, WA
Joined September 2008
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The next era of the PC is taking shape on Windows. ✨
Windows is becoming the home for hybrid intelligence.
🔐 MXC GA
🧠 Frontier coding models running locally
✨ GitHub Copilot HydraFusion
💻 llama.cpp + Windows ML
⚡ Surface Laptop Ultra + Dev Box preorders
🖥️ New RTX Spark PCs
Windows Developer retweeted
I came home from a Microsoft dinner with a Surface Laptop Ultra in a metal briefcase. Consider me a Windows woman now.
128GB of unified memory has me curious about the future of private, local AI. Here’s the unboxing and my first look. It's going for ~$6k.
Windows Developer retweeted
Set up OpenClaw out of the box on the new @nvidia RTX Spark laptops.
Choose a local model or connect a cloud provider, and follow the guided setup without opening a terminal.
Thanks to the NVIDIA and @Microsoft teams who worked with us on this.
nvidianews.nvidia.com/news/n…
Bring powerful local AI compute to your desk. ⚡
Surface RTX Spark Dev Box helps developers and AI engineers experiment, evaluate models + iterate locally.
Available for preorder now. Shipping to customers in the U.S. in November. msft.it/6018as83w
A new generation of Builder PCs is here. ⚡
Powered by NVIDIA RTX Spark and built for demanding local AI workloads, new PCs from ASUS, Dell, HP, Lenovo, MSI + Surface are available for preorder today.
Explore the lineup: msft.it/6013aSAMH
This week, @pavandavuluri showed hybrid intelligence on Windows: local workflows, cloud models with permission. MXC helps contain agent actions on the PC.
Try Portable Computer for Windows by @perplexity_ai: apps.microsoft.com/detail/9p…
Windows Developer retweeted
Hermes Agent is now live (and featured) in the @Microsoft Store for seamless one-click install.
More updates for the Windows ecosystem coming soon!
GitHub Copilot HydraFusion is extending intelligent routing to Windows, tapping into models running locally on your device. 💻☁️
Coming to GitHub Copilot app, Copilot CLI + VS Code in experimental preview later this month: msft.it/6015aU2Tv
Windows Developer retweeted
An update for builders using Codex on Windows:
We’ve built a new sandbox mode using @Microsoft’s Execution Containers (MXC) for faster setup, stronger network enforcement, and granular file access controls.
Requires a compatible Windows 11 device.
Today, we announced new @Windows platform capabilities and @surface devices built to empower people and organizations for the era of hybrid intelligence. Here are some of the highlights:
- It all starts with trust. Microsoft Execution Containers (MXC) is now generally available on Windows 11, keeping agents contained within boundaries the operating system enforces.
- HydraFusion brings hybrid intelligence to life, allowing models to run locally while seamlessly accessing the cloud when more scale or capability is needed. We're working with @github to extend HydraFusion to Windows.
- This fall, Search on the taskbar adds thousands of quick actions, making it easier to adjust settings and get things done as fast as you can type.
- @MSFTCopilot is getting more powerful on Windows. With hybrid intelligence, it can tap into your PC's local capabilities and turn your requests into action, while keeping you in control.
- Local agents are coming to Windows too. Muse is on its way as a native Windows app with MXC integration, and Hermes, OpenClaw, and Perplexity are already building local experiences on Windows.
- Surface Laptop Ultra, built with NVIDIA RTX Spark, is the most powerful Surface we've ever built. It's available for pre-order today, along with the Surface RTX Spark Dev Box and new RTX Spark PCs from our partners. Call of Duty is coming to RTX Spark in 2027.
Read more on the Windows Blog: blogs.windows.com/windowsexp…
More agents. More partners. A more secure foundation. 🤝
With MXC now GA on Windows 11, a growing ecosystem of partners is bringing support for policy-driven agent containment.
See who's building with MXC: msft.it/6019aUbSL
More open-source model choice is coming to Windows. 💻
We’re bringing llama.cpp support to Windows ML, giving developers a faster way to experiment with emerging models and deploy across GPU, NPU + CPU.
Learn more: msft.it/6017aUZFv
Frontier coding intelligence, running locally. ⚡
MAI Code 1.1 Flash brings a 256K context window to your PC, alongside NVIDIA Nemotron Bolt 74B + Deepseek v4 Pro Flash on RTX Spark.
Learn more: msft.it/6019aUz6B
MXC is generally available on Windows 11, and @Replit is one of the first partners providing support.
View the demo to see how you can use local sandboxes in the Replit Desktop App, and join the waitlist for early access: msft.it/6011aosNW
Meet Surface Laptop Ultra. ⚡
Built around NVIDIA RTX Spark with up to 128 GB unified memory and the ability to run AI models exceeding 120B parameters locally.
Available for preorder today.
blogs.windows.com/devices/20…
The next era of the PC is taking shape on Windows. ✨
Windows is becoming the home for hybrid intelligence.
🔐 MXC GA
🧠 Frontier coding models running locally
✨ GitHub Copilot HydraFusion
💻 llama.cpp + Windows ML
⚡ Surface Laptop Ultra + Dev Box preorders
🖥️ New RTX Spark PCs
Hey there, you can preorder our new powerful Surface devices here: blogs.windows.com/devices/20…
Windows Developer retweeted
Excited to announce the Replit desktop app preview with @Microsoft (@msdev).
On @Windows, Replit builds and runs apps locally, and each build runs in its own sandbox powered by Microsoft Execution Containers and @Nvidia OpenShell.
Join the waitlist for early access: replit.com/lp/desktop-previe…
MXC is now GA on Windows 11. 🔐
Define which files and networks agents can access, with policies enforced at runtime.
It’s part of how Windows is building the most secure platform for agents.
Learn more: blogs.windows.com/windowsdev…
Windows Developer retweeted
Today marks a new chapter for Windows, as we bring unmetered intelligence to every desk and every home, and make every PC a place where agents can work securely on your behalf.
Some highlights of what we announced:
• MAI-Code-1.1 Flash: 137B parameter coding model w/ 256K context window, which is now optimized to run on your PC!
• GitHub Copilot now hands off work to local models like MAI-Code-1.1 Flash, helping projects cost a lot less without sacrificing quality.
• With Hybrid Intelligence, Copilot can now take action directly on the PC and keep sensitive work on your device.
• And with Code in Copilot, you can essentially build any software you need on your desktop, without any cloud token spend, and it’s just super at it. You’re no longer limited to what’s in an app store! Your PC becomes an infinite software factory.
• Security is foundational to all this, which is why we are also bringing together Windows and Agent 365 so agents can work within secure boundaries on-device, including MXC a local sandbox for agent execution. Windows becomes your secure agent box!
• All this comes to life on a new generation of devices, like Surface Laptop Ultra, powered by NVIDIA RTX Spark.
Can’t wait to see what you build with all this.
