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Better Models, Smarter Defaults: Claude Sonnet 4, GPT-4.1, and More Control in Visual Studio
We’re excited to share some major improvements to the Copilot experience in Visual Studio, including smarter default models, more choices, and easier ways to manage your usage.
Smarter default model
Copilot in Visual Studio now uses GPT-4.1 as the default model (previously 4o). In our...
Read more🎉 Now in Public Preview: Create Dev Boxes on Behalf of Your Developers
We’re excited to announce that one of our most-requested features is officially in Public Preview:
You can now create Dev Boxes on behalf of your developers. Waiting around to get started is a thing of the past.
Whether you're onboarding a new hire, running a hackathon, or...
Read moreInside Access: Join Us at VS Live! Redmond for a Week of Deep Developer Learning
A long time ago, I stood in a packed room at VS Live! and watched developers erupt in applause after a debugging demo shaved hours off a real-world problem. That was the moment I realized this wasn’t just a conference—it was a place where developers and toolmakers come together to...
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Jun 26, 2025
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Why do I get errors about some weird symbol called ?main@@YAHP$01E$AAV?$Array@PE$AAVString@Platform..., part 2
Figuring out why C++/CX makes a difference.
The Old New Thing
Jun 26, 2025
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Dev Proxy v0.29 with refactored architecture, MCP server, and exposed LM prompts
Waldek,
Garry
Introducing Dev Proxy v0.29, with a major architectural overhaul, control over language model prompts, and improved diagnostics.
Microsoft 365 Developer Blog
Jun 26, 2025
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Fleet Configuration Management
This post explains the challenge of fleet configuration management, the role of an automated fleet configuration management system, and describes key considerations for building such a system.
ISE Developer Blog
Jun 25, 2025
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Better Models, Smarter Defaults: Claude Sonnet 4, GPT-4.1, and More Control in Visual Studio
We’re excited to share some major improvements to the Copilot experience in Visual Studio, including smarter default models, more choices, and easier ways to manage your usage.
Smarter default model
Copilot in Visual Studio now uses GPT-4.1 as the default model (previously 4o). In our...
Visual Studio Blog
Jun 25, 2025
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Removing Azure Resource Manager reliance on Azure DevOps sign-ins
Azure DevOps will no longer depend on the Azure Resource Manager (ARM) resource (https://management.azure.com) when you sign in or refresh Microsoft Entra access tokens. Previously, Azure DevOps required the ARM audience during sign-in and token refresh flows. This requirement meant...
Azure DevOps Blog
Jun 25, 2025
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Why do I get errors about some weird symbol called ?main@@YAHP$01E$AAV?$Array@PE$AAVString@Platform..., part 1
Welcome to the world of C++/CX. Is "welcome" the right word?
The Old New Thing
Jun 24, 2025
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Semantic Kernel Python Gets a Major Vector Store Upgrade
We're excited to announce a significant update to Semantic Kernel Python's vector store implementation. Version 1.34 brings a complete overhaul that makes working with vector data simpler, more intuitive, and more powerful. This update consolidates the API, improves developer experience,...
Semantic Kernel
Jun 24, 2025
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Abusing copyright strings to trick software into thinking it's running on your competitor's PC
I did technically cross my fingers.
The Old New Thing