This is a servicing release to the previous .NET 9 release.

Note: these are the base SDKs that add support for the platforms in question, for MAUI (which is built on top of our SDKs), go here instead: https://docs.microsoft.com/en-us/dotnet/maui/.

Versions

This release consists of the following versions:

• iOS: 18.5.9207
• tvOS: 18.5.9207
• macOS: 15.5.9207
• Mac Catalyst: 18.5.9207

Installation

You can use workload set version 9.0.302.0 in order to install these versions of the SDKs.

Please make sure to be using the latest 9.0.302 before issuing the dotnet workload install command below. You can
validate your installed dotnet version using dotnet --version do make sure it shows 9.0.302 or greater before proceeding.

dotnet workload install <workload id(s)> --version 9.0.302.0

Available workload ids

• ios
• tvos
• macos
• maccatalyst
• android (see https://github.com/dotnet/android)
• maui (see https://github.com/dotnet/maui)

Example command installing all listed workloads.

dotnet workload install ios tvos macos maccatalyst maui android --version 9.0.302.0

You can use dotnet workload --info to validate the workload versions installed in your system.

What's Changed

• [src/runtime] Don't allow native code to resolve a weak reference for an object in the finalizer queue. by @rolfbjarne in #23086
• [src] Fix checking if a constraint implements INativeObject. Fixes #23070. by @rolfbjarne in #23123
• Update Xamarin.Messaging and renamed Xamarin paths by @rolfbjarne in #23087
• [UIKit] Make sure to invoke the correct constructor. by @dalexsoto in #23131
• Updated external/Xamarin.MacDev by @dalexsoto in #23139

Full Changelog: dotnet-9.0.1xx-xcode16.4-9199...dotnet-9.0.1xx-xcode16.4-9207