XCode build error on .NET 10.0.100 (unable to build on any version of xcode)

[jaysidri]

Apple platform

iOS

Framework version

net10.0-*

Affected platform version

.NET 10.0.100

Description

Seems I can't get any recent version of XCode to build my app that uses MAUI 10.0.100 GA

The agent (macOS 15.7.1) has the following versions of xcode:

macOS version:  15.7.1

Installed Xcode versions:
Xcode_16.0.0.app
Xcode_16.0.app
Xcode_16.1.0.app
Xcode_16.1.app
Xcode_16.2.0.app
Xcode_16.2.app
Xcode_16.3.0.app
Xcode_16.3.app
Xcode_16.4.0.app
Xcode_16.4.app
Xcode_16.app
Xcode_26.0.1.app
Xcode_26.0.app
Xcode_26.1_Release_Candidate.app
Xcode_26.1.0.app
Xcode_26.1.app
Xcode.app

Selecting 16.4:

/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.1/26.1.10494/targets/Xamarin.Shared.Sdk.targets(2371,3): error : This version of .NET for iOS (26.1.10494) requires Xcode 26.1. The current version of Xcode is 16.4. Either install Xcode 26.1, or use a different version of .NET for iOS. See https://aka.ms/xcode-requirement for more information. [/Users/runner/work/1/s/xxxx.csproj::TargetFramework=net10.0-ios]

Selecting 26.1:

/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.1/26.1.10494/tools/msbuild/Xamarin.Shared.targets(1034,3): error : /usr/bin/xcrun exited with code 72: [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.1/26.1.10494/tools/msbuild/Xamarin.Shared.targets(1034,3): error : xcrun: error: sh -c '/Applications/Xcode_26.1.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_26.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -find actool 2> /dev/null' failed with exit code 16384: (null) (errno=Invalid argument) [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.1/26.1.10494/tools/msbuild/Xamarin.Shared.targets(1034,3): error : xcrun: error: unable to find utility "actool", not a developer tool or in PATH [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/work/1/s/xxx/obj/Release/net10.0-ios/iossimulator-x64/actool/cloned-assets/Assets.xcassets : error : xcrun: error: sh -c '/Applications/Xcode_26.1.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_26.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -find actool 2> /dev/null' failed with exit code 16384: (null) (errno=Invalid argument) [/Users/runner/work/1/s/xxx/xxxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/work/1/s/xxx/obj/Release/net10.0-ios/iossimulator-x64/actool/cloned-assets/Assets.xcassets : error : xcrun: error: unable to find utility "actool", not a developer tool or in PATH [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/work/1/s/xxx/obj/Release/net10.0-ios/iossimulator-x64/actool/cloned-assets/Assets.xcassets : error :  [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.1/26.1.10494/tools/msbuild/Xamarin.Shared.targets(1034,3): error : actool exited with code 72 [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]
/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net10.0_26.1/26.1.10494/tools/msbuild/Xamarin.Shared.targets(1034,3): error : Failed to load actool log file `obj/Release/net10.0-ios/iossimulator-x64/actool/asset-manifest.plist`: Failed to parse PList data type:  [/Users/runner/work/1/s/xxx/xxx.csproj::TargetFramework=net10.0-ios]

Steps to Reproduce

Create an Azure DevOps task:

- task: Bash@3
    displayName: 'Build iOS App'
    inputs:
      targetType: 'inline'
      script: |
        cd xxx
        # Determine target framework based on SDK version
        if [[ "$(DotNetSdkVersion)" == 10.* ]]; then
          TARGET_FRAMEWORK="net10.0-ios"
        else
          TARGET_FRAMEWORK="net9.0-ios"
        fi
        echo "Using target framework: $TARGET_FRAMEWORK"
        dotnet build ./xxx.csproj -f $TARGET_FRAMEWORK -c Release -r iossimulator-x64 -p:RuntimeIdentifier=iossimulator-x64 -p:EnableAssemblyILStripping=false -p:EnableCodeSigning=false -p:CodesignKey="" -p:CodesignProvision="" -p:CodesignEntitlements=""

Did you find any workaround?

No response

Build logs

No response

[SteveBush]

My Azure DevOps build pipelines for the latest MAUI on NET 10.X are failing. Tried manually setting all XCode SDKs. See #24021.

I have been able to build using GitHub Actions with the macOS-26 GitHub-hosted image and Xcode 26.1.0.

[zippo227]

I had to add this to my GitHub Action.

  - name: Select xcode 26.1
    run: sudo xcode-select -s /Applications/Xcode_26.1.1.app/Contents/Developer

  - name: Ensure iOS is installed
    run: |
      xcodebuild -downloadPlatform iOS

[SteveBush]

I had to add this to my GitHub Action.

  - name: Select xcode 26.1
    run: sudo xcode-select -s /Applications/Xcode_26.1.1.app/Contents/Developer

  - name: Ensure iOS is installed
    run: |
      xcodebuild -downloadPlatform iOS

This works for GitHub Actions but I have not found a solution that works on Azure DevOps pipelines.

[zippo227]

I had to add this to my GitHub Action.

  - name: Select xcode 26.1
    run: sudo xcode-select -s /Applications/Xcode_26.1.1.app/Contents/Developer

  - name: Ensure iOS is installed
    run: |
      xcodebuild -downloadPlatform iOS

This works for GitHub Actions but I have not found a solution that works on Azure DevOps pipelines.

Even though it "works" on GitHub, it is not ideal. The download is adding several minutes to iOS builds on .NET 10 compared to .NET 9.

[DevEddy]

Ran into the same issue. Any infos on this?

[zippo227]

I'm no longer having success using Xcode_26.1.1.app. It seems that GitHub removed it. I'm using Xcode_26.1.app now.

https://github.com/actions/runner-images/blob/main/images/macos/macos-26-arm64-Readme.md#xcode

[edgarssults]

I have the same issue even though I'm supposedly installing all the prerequisites.

- script: |
    sudo xcode-select -s /Applications/Xcode_26.1.app
    xcodebuild -version
  displayName: 'Install Xcode 26.1'

- task: UseDotNet@2
  displayName: 'Install .NET 10.0.x'
  inputs:
    packageType: 'sdk'
    version: 10.0.x

- task: CmdLine@2
  displayName: 'Install MAUI 10.0.x'
  inputs:
    script: 'dotnet workload install maui-android maui-ios --skip-sign-check --source https://api.nuget.org/v3/index.json'

// Install Apple certificate and provisioning profile here

- task: DotNetCoreCLI@2
  displayName: 'Build App'
  inputs:
    command: 'publish'
    publishWebProjects: false
    projects: 'Maui.sln'
    arguments: '-f net10.0-ios -c Release -p:CodesignKey="$(iOSCodesignKey)" -p:CodesignProvision="$(iOSCodesignProvision)"'
    zipAfterPublish: false
    modifyOutputPath: false

Finished external tool execution #1 in 00:00:09.1336913 and with exit code 72.
  2025-11-26 15:22:55.083 xcodebuild[22775:277234] Writing error result bundle to /var/folders/vx/zmvzwd094y53mqcpn3jbm7580000gn/T/ResultBundle_2025-26-11_15-22-0055.xcresult
  xcodebuild: error: SDK "/Applications/Xcode_26.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" cannot be located.
  2025-11-26 15:22:57.969 xcodebuild[23060:277841] Writing error result bundle to /var/folders/vx/zmvzwd094y53mqcpn3jbm7580000gn/T/ResultBundle_2025-26-11_15-22-0057.xcresult
  xcodebuild: error: SDK "/Applications/Xcode_26.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" cannot be located.
  xcrun: error: sh -c '/Applications/Xcode_26.1.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_26.1.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

[zippo227]

I have the same issue even though I'm supposedly installing all the prerequisites.

- script: |
    sudo xcode-select -s /Applications/Xcode_26.1.app
    xcodebuild -version
  displayName: 'Install Xcode 26.1'

- task: UseDotNet@2
  displayName: 'Install .NET 10.0.x'
  inputs:
    packageType: 'sdk'
    version: 10.0.x

- task: CmdLine@2
  displayName: 'Install MAUI 10.0.x'
  inputs:
    script: 'dotnet workload install maui-android maui-ios --skip-sign-check --source https://api.nuget.org/v3/index.json'

// Install Apple certificate and provisioning profile here

- task: DotNetCoreCLI@2
  displayName: 'Build App'
  inputs:
    command: 'publish'
    publishWebProjects: false
    projects: 'Maui.sln'
    arguments: '-f net10.0-ios -c Release -p:CodesignKey="$(iOSCodesignKey)" -p:CodesignProvision="$(iOSCodesignProvision)"'
    zipAfterPublish: false
    modifyOutputPath: false

Finished external tool execution #1 in 00:00:09.1336913 and with exit code 72.
  2025-11-26 15:22:55.083 xcodebuild[22775:277234] Writing error result bundle to /var/folders/vx/zmvzwd094y53mqcpn3jbm7580000gn/T/ResultBundle_2025-26-11_15-22-0055.xcresult
  xcodebuild: error: SDK "/Applications/Xcode_26.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" cannot be located.
  2025-11-26 15:22:57.969 xcodebuild[23060:277841] Writing error result bundle to /var/folders/vx/zmvzwd094y53mqcpn3jbm7580000gn/T/ResultBundle_2025-26-11_15-22-0057.xcresult
  xcodebuild: error: SDK "/Applications/Xcode_26.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" cannot be located.
  xcrun: error: sh -c '/Applications/Xcode_26.1.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_26.1.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

I don't see where you added the code from the sample. You will need to add this:

  - name: Ensure iOS is installed
    run: |
      xcodebuild -downloadPlatform iOS

[edgarssults]

I don't see where you added the code from the sample. You will need to add this:

  - name: Ensure iOS is installed
    run: |
      xcodebuild -downloadPlatform iOS

I'm using Azure DevOps like in the original issue description.

My 'Install Xcode 26.1' step outputs this:

Xcode 26.1
Build version 17B54

I tried adding xcodebuild -downloadPlatform iOS to the script, but it's still failing with the same error.

[zippo227]

I don't see where you added the code from the sample. You will need to add this:

  - name: Ensure iOS is installed
    run: |
      xcodebuild -downloadPlatform iOS

I'm using Azure DevOps like in the original issue description.

My 'Install Xcode 26.1' step outputs this:

Xcode 26.1
Build version 17B54

I tried adding xcodebuild -downloadPlatform iOS to the script, but it's still failing with the same error.

Are you building only for iOS and Android? It looks like it is looking for a MacOSX sdk.

In case it's helpful try listing the installed versions?

      - name: List Xcode installations
        run: sudo ls -1 /Applications | grep "Xcode"

The Azure DevOps documentation from Microsoft seems to link to the same GitHub page as linked previously. But here's the Microsoft page.

https://learn.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azure-devops&tabs=macos-images%2Cyaml

[edgarssults]

Are you building only for iOS and Android? It looks like it is looking for a MacOSX sdk.

In case it's helpful try listing the installed versions?

      - name: List Xcode installations
        run: sudo ls -1 /Applications | grep "Xcode"

I'm building for both in separate pipeline jobs and separate VMs. Similarly to OP.
This is the version output, same as OP:

Xcode_16.0.0.app
Xcode_16.0.app
Xcode_16.1.0.app
Xcode_16.1.app
Xcode_16.2.0.app
Xcode_16.2.app
Xcode_16.3.0.app
Xcode_16.3.app
Xcode_16.4.0.app
Xcode_16.4.app
Xcode_16.app
Xcode_26.0.1.app
Xcode_26.0.app
Xcode_26.1.1.app
Xcode_26.1.app
Xcode.app

And again, we're using Azure DevOps, not GitHub.

[rolfbjarne]

I believe this is because something breaks when using Xcode through a symlink.

Executing this on the machine in question will show which Xcode paths are symlinks:

ls -lad /Applications/Xcode

Example output from my machine:

$ ls -lad /Applications/*Xcode*
drwxr-xr-x@ 3 rolf  staff  96 May 13  2025 /Applications/Xcode_16.4.0.app
drwxr-xr-x@ 3 rolf  staff  96 Sep 17 10:19 /Applications/Xcode_26.0.1.app
drwxr-xr-x@ 3 rolf  staff  96 Oct 28 11:37 /Applications/Xcode_26.1.0.app
drwxr-xr-x@ 3 rolf  staff  96 Nov  7 10:34 /Applications/Xcode_26.1.1.app
lrwxr-xr-x@ 1 rolf  admin  30 Jun 12 13:27 /Applications/Xcode.app -> /Applications/Xcode_16.4.0.app

So please make sure to not select an Xcode path that's a symlink (in my case that would be /Applications/Xcode.app).

Can you try that and see if that works?