Hi, I upgrade my app to.net 9 according to: MAUI Upgrade from NET 8 to NET 9 and got this error" This version of Microsoft.MacCatalyst requires the MacCatalyst 18.2 SDK (shipped with Xcode 16.2). Either upgrade Xcode to get the required header files or set the managed linker behaviour to Link Framework SDKs Only in your project's iOS Build Options > Linker Behavior (to try to avoid the new APIs). I tried to removed my xcode and install new one and get the same xcode version 15.4 how is can be solved ? i have macos sonoma 14.4.1 Thanks,

Hello, Xcode 16.2 requires a Mac running macOS Sonoma 14.5 or later. See the release note from Apple- Xcode 16.2 Release Notes | Apple Developer Documentation Please update your MacOS, see How to upgrade to macOS Sequoia - Apple Support After that, you could download Xcode16.2 from AppStore. Best Regards, Wenyan Zhang If the answer is the right solution, please click " Accept Answer " and kindly upvote it. If you have extra questions about this answer, please click " Comment ". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

This version of Microsoft.MacCatalyst requires the MacCatalyst 18.2 SDK (shipped with Xcode 16.2).

Accepted answer

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 35,031 Reputation points Microsoft Vendor

2025-01-24T02:21:16.58+00:00

Hello,

Xcode 16.2 requires a Mac running macOS Sonoma 14.5 or later. See the release note from Apple- Xcode 16.2 Release Notes | Apple Developer Documentation

Please update your MacOS, see How to upgrade to macOS Sequoia - Apple Support

After that, you could download Xcode16.2 from AppStore.

Best Regards,

Wenyan Zhang

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Please sign in to rate this answer.

1 person found this answer helpful.
Dani_S 4,036 Reputation points

2025-01-24T05:11:11.7566667+00:00

What about my data code and all installation, i will lose them?

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 35,031 Reputation points Microsoft Vendor

2025-01-24T05:18:32.29+00:00

Installing the latest OS won't lose your data. If you are concerned about this, please backup your data.

Dani_S 4,036 Reputation points

2025-01-24T07:26:13.45+00:00

ו start update to sonoma 14.7.2 ,it will solve the problem.Later to remove my older xcode and install xcode 16.2

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 35,031 Reputation points Microsoft Vendor

2025-01-24T07:32:26.1066667+00:00

OK, waiting for your updates.

Dani_S 4,036 Reputation points

2025-01-24T08:41:11.33+00:00

Before upgrade my macos sonoma i upgraded maui sdk and workload succesfully.I Need to do it again after finshed the upgrade.

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 35,031 Reputation points Microsoft Vendor

2025-01-24T09:12:03.7533333+00:00

No, you don't have to install it again.

Dani_S 4,036 Reputation points

2025-01-24T09:54:45.72+00:00

I got this warning again:

Executing task: dotnet: clean /Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj

dotnet clean /Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj /property:GenerateFullPaths=true /consoleloggerparameters:NoSummary /p:Configuration=Debug /p:Platform="AnyCPU"

Build started 24/01/2025 11:42:22.

1>Project "/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj" on node 1 (Clean target(s)). 1>Project "/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj" (1) is building "/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj" (1:2) on node 1 (Clean target(s)). 1>_CleanAppBundle: Directory "bin/Debug/net9.0-maccatalyst/maccatalyst-arm64/MauiApp1.app/" doesn't exist. Skipping. _CleanBindingResourcePackage: Directory "bin/Debug/net9.0-maccatalyst/maccatalyst-arm64/MauiApp1.resources" doesn't exist. Skipping. _CleanDebugSymbols: Directory "bin/Debug/net9.0-maccatalyst/maccatalyst-arm64/MauiApp1.app.mSYM" doesn't exist. Skipping. _CleanDeviceSpecificOutput: Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/device-builds" doesn't exist. Skipping. Directory "bin/Debug/net9.0-maccatalyst/maccatalyst-arm64/device-builds" doesn't exist. Skipping. _CleanIntermediateToolOutput: Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/actool" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/assetpacks" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/codesign" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/coremlc" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/ibtool" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/ibtool-link" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/ibtool-manifests" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/ipa" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/metal" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/optimized" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/scntool" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/TextureAtlas" doesn't exist. Skipping. Directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/mtouch-cache" doesn't exist. Skipping. Removing directory "obj/Debug/net9.0-maccatalyst/maccatalyst-arm64/". 1>Done Building Project "/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj" (Clean target(s)). 1>Done Building Project "/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj" (Clean target(s)).

Terminal will be reused by tasks, press any key to close it.

Executing task: dotnet: rebuild /Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj

dotnet build /Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.sln /target:MauiApp1:rebuild /property:GenerateFullPaths=true /consoleloggerparameters:NoSummary /p:Configuration=Debug /p:Platform="Any CPU"

Determining projects to restore...

All projects are up-to-date for restore.

Detected signing identity:

Code Signing Key: "" (-) Bundle Id: com.companyname.mauiapp1 App Id: com.companyname.mauiapp1

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/App.xaml.cs(8,13): warning CS0618: 'Application.MainPage.set' is obsolete: 'This property is deprecated. Initialize your application by overriding Application.CreateWindow rather than setting MainPage. To modify the root page in an active application, use Windows[0].Page for applications with a single window. For applications with multiple windows, use Application.Windows to identify and update the root page on the correct window. Additionally, each element features a Window property, accessible when it's part of the current window.' [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MainPage.xaml.cs(107,20): warning CS8618: Non-nullable field 'continent' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable. [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MainPage.xaml.cs(108,20): warning CS8618: Non-nullable field 'country' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable. [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MainPage.xaml.cs(109,20): warning CS8618: Non-nullable field 'city' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable. [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MainPage.xaml.cs(26,17): warning CS8604: Possible null reference argument for parameter 'source' in 'DataModel? Enumerable.LastOrDefault<DataModel>(IEnumerable<DataModel> source)'. [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MainPage.xaml.cs(26,16): warning CS8603: Possible null reference return. [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MainPage.xaml(14,32): XamlC warning XC0022: Binding could be compiled to improve runtime performance if x:DataType is specified. See https://learn.microsoft.com/dotnet/maui/fundamentals/data-binding/compiled-bindings for more information. [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

MauiApp1 -> /Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/bin/Debug/net9.0-maccatalyst/maccatalyst-arm64/MauiApp1.dll

Optimizing assemblies for size may change the behavior of the app. Be sure to test after publishing. See: https://aka.ms/dotnet-illink

Optimizing assemblies for size. This process might take a while.

ILLINK : warning MT0182: Not linking with the framework OpenGLES (referenced by a module reference in SkiaSharp.Views.iOS.dll) because it's not available on the current platform (MacCatalyst). [/Users/sasasoftware/Desktop/8b82398c-4c31-4ec5-b53f-2b4a2e5c5ba3_archive-net8/MauiApp1/MauiApp1.csproj::TargetFramework=net9.0-maccatalyst]

Terminal will be reused by tasks, press any key to close it.

Dani_S 4,036 Reputation points

2025-01-24T11:02:25.2533333+00:00

Your quick answer will be appreciated.

Dani_S 4,036 Reputation points

2025-01-27T04:19:32.7933333+00:00

.......

Dani_S 4,036 Reputation points

2025-01-27T04:28:06.86+00:00

Your quick answer will be appreciated.

Dani_S 4,036 Reputation points

2025-01-27T04:37:31.45+00:00

.......

Dani_S 4,036 Reputation points

2025-01-27T05:56:48.2733333+00:00

.....

Dani_S 4,036 Reputation points

2025-01-27T06:30:42.45+00:00

I have Xcode 16.2 install in my Mac Sonoma 14.7.2

Dani_S 4,036 Reputation points

2025-01-27T06:32:07.3533333+00:00

Still can't debug new empty project in net 9 using vs code.

In cli I succeeded.

https://learn.microsoft.com/en-us/answers/questions/2151145/cant-debug-new-empty-project-in-net-9-using-vs-cod

Dani_S 4,036 Reputation points

2025-01-28T09:12:39.9266667+00:00

i update toupgrade to macOS Sequoi right now... i will let you know my results.

Dani_S 4,036 Reputation points

2025-01-28T09:29:41.4966667+00:00

i upgrade to macOS Sequoi and still has same problem

can you please help.

Dani_S 4,036 Reputation points

2025-01-28T09:32:09.48+00:00

.......

Dani_S 4,036 Reputation points

2025-01-28T10:16:52.42+00:00

The problem solved after uninstalling vs code and installing again. it update its pacakes.

We can close the ticket.
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.

Share via

This version of Microsoft.MacCatalyst requires the MacCatalyst 18.2 SDK (shipped with Xcode 16.2).

0 additional answers

Your answer