Microsoft and Syncfusion are collaborating on Blazor through a free, MIT-licensed component toolkit, merged framework fixes, and setup tooling. The Syncfusion Toolkit for Blazor needs no license key and can be used commercially. For Blazor developers, the work affects component choice, project setup and the quality of ASP.NET Core fixes.
Infragistics has made more than 50 of its Blazor controls free and open source under the MIT license, and its engineers are contributing directly to the framework. New .NET 11 analyzers from the collaboration are merged into ASP.NET Core, so every Blazor developer gets the tooling benefits, whether or not they use its components.
Microsoft shipped out-of-band security updates for .NET 8, 9, 10 and .NET 11 RC3. CVE-2026-111497 fixes a Brotli decompression buffer overflow, and CVE-2026-114148 fixes unsafe ownership metadata in Linux tarballs. Two earlier fixes that the October 13 release missed were also re-shipped. Rebuilding self-contained apps and container images is required to pick up the fix.
iOS apps built with Xcode 27 must adopt the UIKit scene lifecycle, or they can vanish right after the splash screen. Microsoft explains an agent skill that prepares existing .NET MAUI projects, plus the manual steps for the scene delegate, Info.plist manifest and minimum OS versions. It also covers moving AppDelegate callbacks to scene events.
The GitHub Copilot SDK lets you keep GitHub's agent runtime while routing model inference to your own Microsoft Foundry or Azure OpenAI deployment through BYOK. The article walks through a .NET 10 console sample that configures ProviderConfig, authenticates with Microsoft Entra ID or an API key, and sends one prompt.
Microsoft has announced the public preview of dotnetup, a toolchain manager that installs, manages and updates .NET SDKs and runtimes in the user account on macOS and Linux. It needs no admin rights, supports side-by-side versions and respects global.json. It is a practical option for local machines and CI workers.