Cannot build Maui 9 with macos-15

[sven-s]

Description

I am trying to build a Maui 9 project with the following command line:

dotnet publish -f net9.0-ios -c Release -p:ArchiveOnBuild=true /p:RuntimeIdentifier=ios-arm64 cpm-app/cpm-app.csproj

I am also setting the xcode version to 16.2 via

sudo xcode-select -s /Applications/Xcode_16.2.0.app/Contents/Developer

but I get the following error i the build:

2025-01-10 14:51:35.165 xcodebuild[8338:37797] Writing error result bundle to /var/folders/sg/7ncxbtp941dd9ql29twtl6jw0000gn/T/ResultBundle_2025-10-01_14-51-0035.xcresult xcodebuild: error: SDK "/Applications/Xcode_16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" cannot be located. 2025-01-10 14:51:37.449 xcodebuild[8480:38140] Writing error result bundle to /var/folders/sg/7ncxbtp941dd9ql29twtl6jw0000gn/T/ResultBundle_2025-10-01_14-51-0037.xcresult xcodebuild: error: SDK "/Applications/Xcode_16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" cannot be located. xcrun: error: sh -c '/Applications/Xcode_16.2.0.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -find actool 2> /dev/null' failed with exit code 16384: (null) (errno=No such file or directory) xcrun: error: unable to find utility "actool", not a developer tool or in PATH

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 12
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• macOS 15
• macOS 15 Arm64
• Windows Server 2019
• Windows Server 2022
• Windows Server 2025

Image version and build link

20250106.547

Is it regression?

no

Expected behavior

The build should succeed

Actual behavior

The build fails

Repro steps

• build a maui .net 9 project

[aartis17]

@sven-s We will investigate the issue and keep you posted on further updates.
Thank you.

[DevDachi]

@aartis17 Thanks for looking into this. We are also facing same issue.

[maroy1986]

Faced the same issue. Had to change XCode to version 16.1 instead of 16.2 to make it work while waiting for a fix. It's been broken for almost a week now. See #11335 #11329 also.

[aartis17]

Hi @sven-s We are closing this issue as a duplicate of #11335. Please follow suggested item in order to be updated on the matter. Thank you.

[sven-s]

@aartis17 But #11335 targets another macos version. This issue is about maco15.

[sven-s]

@maroy1986 I tried Xcode 16.1, but that did not work:

The linker gives me this warning: ILLINK : warning MT0079: The recommended Xcode version for Microsoft.iOS 18.2.9170 is Xcode 16.2 or later.

And I got this error:

/Users/builder/azdo/_work/9/s/xamarin-macios/src/build/dotnet/ios/generated-sources/AVFoundation/AVAudioSession.g.cs(659): error MT4162: The type 'AVFoundation.AVAudioSessionMicrophoneInjectionMode' (used as a parameter in AVFoundation.AVAudioSession.SetPreferredMicrophoneInjectionMode) is not available in iOS 18.1 (it was introduced in iOS 18.2). Please build with a newer iOS SDK (usually done by using the most recent version of Xcode). [/Users/runner/work/1/s/cpm-app-extension-share/cpm-app-extension-share.csproj]

So to me, the version to go for .NET 9 Maui is Xcode 16.2

[aartis17]

Hi @sven-s ,
Could you please provide additional information about the .NET project and the workflow file you are using? I'll investigate it further.
Thanks.