Xamarin.iOS & Xamarin.Mac Files

[!NOTE] * Xcode 26.1 is required with this release. Xcode 26.1 requires macOS 15.6+.

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/.

This release consists of the following versions:

• iOS: 26.1.10494
• tvOS: 26.1.10494
• macOS: 26.1.10494
• Mac Catalyst: 26.1.10494

Installation

You can use workload set version 10.0.100.1 in order to install these versions of the SDKs.

Please make sure to be using the latest .NET SDK 10.0.100 before issuing the dotnet workload install command below. You can validate your installed dotnet version using dotnet --version do make sure it shows 10.0.100 before proceeding.

:::sh
dotnet workload install <workload id(s)> --version 10.0.100.1

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.

:::sh
dotnet workload install ios tvos macos maccatalyst maui android --version 10.0.100.1

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

Full release notes: https://github.com/dotnet/macios/wiki/.NET-10-release-notes

What's Changed

• [LocalAuthentication] Fix nullability for LAContext.CanEvaluatePolicy. Fixes [#12981]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23911
• [UIKit] Add a weakly typed UIMenu.Identifier property and UIMenu.Create overload. Fixes [#14177]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23913
• [AVFoundation] Improve documentation for AVFileTypes.Mpeg3. Fixes [#8735]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23908
• [WebKit] Improve documentation for WKHttpCookieStore.[Add|Remove]Observer. Fixes [#9984]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23910
• [xcode26.1] Bump to Xcode 26.1 Beta 1 by @dalexsoto in https://github.com/dotnet/macios/pull/23873
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/23934
• [UIKit] Fix incorrect property type for UIButtonConfiguration.SymbolContentTransition. Fixes [#23925]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23930
• [Foundation] Fix the property type for NSUrlAuthenticationChallenge.Sender. Fixes [#7333]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23906
• [tools] ShazamKit is now available in the simulator. Fixes [#15138]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23921
• [xcode26.1] Update AVFoundation to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23899
• [xcode26.1] Update CarPlay to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23880
• [xcode26.1] Update AuthenticationServices to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23904
• [xcode26.1] Update AccessorySetupKit to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23897
• [xcode26.1] Update Metal to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23901
• [xcode26.1] Update UIKit to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23887
• [xcode26.1] Update AutomaticAssessmentConfiguration to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23878
• [xcode26.1] Update HomeKit to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23884
• [xcode26.1] Update CallKit to beta 1. by @rolfbjarne in https://github.com/dotnet/macios/pull/23902
• [bgen] Fix APIs with both [Protected] and [Internal]. Fixes [#6889]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23937
• [bgen] Handle [DesignatedInitializer] being in two places at once. Fixes [#10106]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23940
• [CoreAnimation] Improve docs for CALayer.[Set|Get]Contents. Fixes [#23933]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23943
• [NetworkExtension] Fix nullability for NETunnelProvider.HandleAppMessage. Fixes [#16789]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23948
• [AppKit] Bind the NSBindingOption constants as a strong dictionary. Fixes [#17983]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23954
• [Foundation] Update bindings for NSCoder. Fixes [#4471]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23945
• [CoreFoundation] Improve the handling of data callbacks in CFSocket.OnCallback. by @rolfbjarne in https://github.com/dotnet/macios/pull/23955
• [CoreFoundation] Generate any CFProxy keys. Fixes [#18911]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23956
• [xcode26.1] Bump to beta 2. by @rolfbjarne in https://github.com/dotnet/macios/pull/23959
• [runtime] The 'libextension-dotnet.a' library is required for tvOS. Fixes [#13260]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23957
• [bgen] Warn with [Protocol]+[BaseType], but no [Model]. Fixes [#17286]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23949
• [msbuild] Ensure all resources are available on Windows before packing them. Fixes [#23928]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23971
• [msbuild] Unify and improve code to execute tasks remotely. Fixes [#23927]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23944
• [devops] Make the test filter configurable when running remote tests. by @rolfbjarne in https://github.com/dotnet/macios/pull/23970
• [AVFoundation] Add a strongly typed AVAssetWriter factory method. Fixes [#21509]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23982
• [CoreGraphics] Implement getting the refresh rate for a CGDisplay. Fixes [#9958]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23922
• [main] Update dependencies from dotnet/sdk by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/23974
• [msbuild] Use TaskRunner.CopyInputsAsync2 to copy inputs to the remote build server. by @rolfbjarne in https://github.com/dotnet/macios/pull/23965
• [dotnet] Don't overwrite any existing value for DOTNET_DiagnosticPorts when computed through our build logic. by @rolfbjarne in https://github.com/dotnet/macios/pull/23993
• [Photos] Bump to Xcode 26.1 Beta 2. by @rolfbjarne in https://github.com/dotnet/macios/pull/24001
• [msbuild] Renumber msbuild error codes to avoid duplicating them. by @rolfbjarne in https://github.com/dotnet/macios/pull/24012
• [UIKit] Update to Xcode 26.1 beta 2. by @rolfbjarne in https://github.com/dotnet/macios/pull/24013
• Use 'global using' statements in most projects to simplify code. by @rolfbjarne in https://github.com/dotnet/macios/pull/23895
• [CoreGraphics] Update to Xcode 26.1 beta 2. by @rolfbjarne in https://github.com/dotnet/macios/pull/24000
• [HomeKit] Update to Xcode 26.1 beta 2. by @rolfbjarne in https://github.com/dotnet/macios/pull/24009
• [AudioToolbox] Improve AudioQueue API a little bit. Fixes [#11183]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23988
• [Foundation] Update to Xcode 26.1 beta 2. by @rolfbjarne in https://github.com/dotnet/macios/pull/24016
• [CoreMedia] Improve CMFormatDescription.SubType properties. Fixes [#23217]. by @rolfbjarne in https://github.com/dotnet/macios/pull/23262
• Bump mlaunch. by @rolfbjarne in https://github.com/dotnet/macios/pull/24040
• [CoreImage] Adjust a little bit how filters are bound and verified. by @rolfbjarne in https://github.com/dotnet/macios/pull/23987
• [xcode26.1] Bump to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24051
• [Foundation] Improve cookie storage a bit in NSUrlSessionHandler. Fixes [#23950]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24058
• [tests] Add a test to verify and keep track of app size changes. by @rolfbjarne in https://github.com/dotnet/macios/pull/23999
• [introspection] Apple fixed FB18122430 in Xcode 26.1. by @rolfbjarne in https://github.com/dotnet/macios/pull/24070
• [msbuild] Fix DetectSigningIdentity with entitlements in the simulator. Fixes [#24032]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24076
• [runtime] Adopt safer native compiler flags: Wignored-qualifiers by @rolfbjarne in https://github.com/dotnet/macios/pull/24068
• [Accessibility] Update bindings to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24060
• [runtime] Adopt safer native compiler flags: Wmissing-field-initializers by @rolfbjarne in https://github.com/dotnet/macios/pull/24071
• [runtime] Retry downloading coreclrhost.h if it fails. by @rolfbjarne in https://github.com/dotnet/macios/pull/24069
• [AppKit] Update bindings to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24080
• [build] Make it possible to select to build for either the simulator or device. by @rolfbjarne in https://github.com/dotnet/macios/pull/24092
• [runtime] Adopt safer native compiler flags: Wcast-function-type-mismatch by @rolfbjarne in https://github.com/dotnet/macios/pull/24083
• [runtime] Adopt safer native compiler flags: Wsemicolon-before-method-body by @rolfbjarne in https://github.com/dotnet/macios/pull/24078
• [runtime] Adopt safer native compiler flags: Wsign-compare by @rolfbjarne in https://github.com/dotnet/macios/pull/24084
• [runtime] Adopt safer native compiler flags: ftrivial-auto-var-init=zero by @rolfbjarne in https://github.com/dotnet/macios/pull/24085
• [runtime] Adopt safer native compiler flags: Wshadow by @rolfbjarne in https://github.com/dotnet/macios/pull/24088
• [AppKit] Update bindings for NSTextView. Fixes [#24098]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24109
• [msbuild] Fix the PropertyListEditor task to correctly handle two input files. Fixes [#24091]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24105
• [runtime] Adopt safer native compiler flags: Wformat-nonliteral by @rolfbjarne in https://github.com/dotnet/macios/pull/24090
• Bump mlaunch to get improved launch failure message. Fixes [#23923]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24101
• [runtime] Adopt safer native compiler flags: report numerous other warnings by @rolfbjarne in https://github.com/dotnet/macios/pull/24093
• [AuthenticationServices] Update bindings to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24119
• [AutomaticAssessmentConfiguration] Update bindings to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24121
• [metal] Update bindings to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24122
• [UIKit] Update bindings to Xcode 26.1 Beta 3 by @dalexsoto in https://github.com/dotnet/macios/pull/24124
• [xcode26.1] Merge main into xcode26.1 by @dalexsoto in https://github.com/dotnet/macios/pull/24126
• [main] Update dependencies from dotnet/dotnet by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/24136
• [msbuild] Improve logging in the DetectSigningIdentity task. by @rolfbjarne in https://github.com/dotnet/macios/pull/24120
• [release/10.0.1xx] Update dependencies from dotnet/dotnet by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/24135
• [xcode26.1] Bump to Xcode 26.1 Release Candidate by @dalexsoto in https://github.com/dotnet/macios/pull/24131
• [AVFoundation] Fix naming of AVMetadataObjectType.CatHead, and update corresponding test to work on earlier OS versions. by @rolfbjarne in https://github.com/dotnet/macios/pull/24137
• [release/10.0.1xx] Update dependencies from dotnet/dotnet by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/24140
• [tests] Add/improve logging in BitmapContextTest.CreateAdaptive. by @rolfbjarne in https://github.com/dotnet/macios/pull/24144
• [bgen] Don't emit/use [Preserve] attributes anymore. Fixes [#19524]. by @rolfbjarne in https://github.com/dotnet/macios/pull/22860
• [tools] Don't set MONO_GC_PARAMS if we're not using Mono. by @rolfbjarne in https://github.com/dotnet/macios/pull/24148
• [release/10.0.1xx] Update dependencies from dotnet/dotnet by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/24156
• [UIKit] Fix crash in UIScreen.Capture() and UIView.Capture() by replacing deprecated UIGraphicsBeginImageContextWithOptions with UIGraphicsImageRenderer. Fixes [#24053]. by @Copilot in https://github.com/dotnet/macios/pull/24054
• Fixed typo in word mutated by @aphex3k in https://github.com/dotnet/macios/pull/24170
• [UIKit] Fix GCHandle memory leak in NetworkReachability.SetNotification. Fixes [#12962]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24147
• [xcode26.1] Update to stable bits by @dalexsoto in https://github.com/dotnet/macios/pull/24169
• [Foundation] Fix nullability in NSAction. by @rolfbjarne in https://github.com/dotnet/macios/pull/24172
• [main] Merge xcode26.1 into main by @dalexsoto in https://github.com/dotnet/macios/pull/24175
• Revert "[dotnet] Pass --preserve-symbol-paths to the trimmer to ensure trimmed assemblies aren't different between architectures. (#23858)" by @rolfbjarne in https://github.com/dotnet/macios/pull/24173
• [release/10.0.1xx] Bring Xcode 26.1 support by @dalexsoto in https://github.com/dotnet/macios/pull/24183
• [release/10.0.1xx] [src] Fix calling ConformsToProtocol on native instances that don't have a managed peer yet. Fixes [#24111]. by @rolfbjarne in https://github.com/dotnet/macios/pull/24190
• [release/10.0.1xx] [dotnet] Fix loading oldest reference assemblies for library projects Fixes [#24043]. by @dalexsoto in https://github.com/dotnet/macios/pull/24194
• [release/10.0.1xx] Update dependencies from dotnet/macios by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/24197
• [release/10.0.1xx] [msbuild] Fix confusion about where the codesign[-bundle].items files are stored. Fixes [#24052]. by @dalexsoto in https://github.com/dotnet/macios/pull/24201
• [release/10.0.1xx] Update dependencies from dotnet/macios by @dotnet-maestro[bot] in https://github.com/dotnet/macios/pull/24202

New Contributors

• @aphex3k made their first contribution in https://github.com/dotnet/macios/pull/24170

Full Changelog: https://github.com/dotnet/macios/compare/dotnet-10.0.1xx-xcode26.0-11017...dotnet-10.0.1xx-xcode26.1-10494