Build issue after updating VS to latest

Question

Build issue after updating VS to latest

Sreenivasan, Sreejith 80

I am getting below errors after updating the VS to latest.

Errors:

The workload 'net8.0-ios' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/maui-support-policy for more information about the support policy.
SupportedOSPlatformVersion 11.0 cannot be higher than TargetPlatformVersion 1.0.

My version details adding below:

Microsoft Visual Studio Professional 2022 (64-bit) - Current Version 17.14.18 (October 2025)

The project was working fine before updating VS and I am targeting .net 8. I did few workarounds and no luck.

In my .NET MAUI App, I have added .NET Class Library and .NET MAUI Class Library projects. Adding all projects .csproj details below:

.NET MAUI .csproj:


<Project Sdk="Microsoft.NET.Sdk">

	<PropertyGroup>

		<TargetFrameworks>net8.0-android;net8.0-ios</TargetFrameworks>

		<OutputType>Exe</OutputType>

		<RootNamespace>Inventiva</RootNamespace>

		<UseMaui>true</UseMaui>

		<SingleProject>true</SingleProject>

		<ImplicitUsings>enable</ImplicitUsings>

		<Nullable>enable</Nullable>

		<!-- Display name -->

		<ApplicationTitle>Inventiva</ApplicationTitle>

		<!-- App Identifier -->

		<ApplicationId>com.companyname.inventiva</ApplicationId>

		<!-- Versions -->

		<ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>

		<ApplicationVersion>1</ApplicationVersion>

		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">11.0</SupportedOSPlatformVersion>

		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'">21.0</SupportedOSPlatformVersion>

		<!-- Release Build Settings -->

		<PublishTrimmed>false</PublishTrimmed>

		<RunAOTCompilation>false</RunAOTCompilation>

		<PublishReadyToRun>false</PublishReadyToRun>

	</PropertyGroup>

	<ItemGroup>

		<!-- App Icon -->

		<MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appicon.svg" Color="#512BD4" />

		<MauiSplashScreen Include="Resources\Splash\splashlogo.png" Color="#FFFFFF" />

		

		<!-- Splash Screen -->

		<!--<MauiSplashScreen Include="Resources\Splash\splash.svg" Color="#512BD4" BaseSize="128,128" />-->

		<!-- Images -->

		<MauiImage Include="Resources\Images\*" />

		<MauiImage Update="Resources\Images\dotnet_bot.png" Resize="True" BaseSize="300,185" />

		<!-- Custom Fonts -->

		<MauiFont Include="Resources\Fonts\*" />

		<!-- Raw Assets (also remove the "Resources\Raw" prefix) -->

		<MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />

	</ItemGroup>

	<ItemGroup>

	  <None Remove="Platforms\Android\Assets\pdfjs\build\pdf.mjs" />

	  //remaining

	</ItemGroup>

	<ItemGroup>

		//nuget packages

	</ItemGroup>

	<ItemGroup>

		<ProjectReference Include="..\Clinical6SDK\Clinical6SDK.csproj" />

		<ProjectReference Include="..\MAUI.Clinical6\MAUI.Clinical6.csproj" />

	</ItemGroup>

	<ItemGroup Condition="'$(TargetFramework)' == 'net8.0-android'">

	  //nuget packages

	</ItemGroup>

</Project>

.NET Class Library .csproj:


<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>

    <TargetFramework>net8.0</TargetFramework>

    <ImplicitUsings>enable</ImplicitUsings>

    <Nullable>enable</Nullable>

  </PropertyGroup>

  <ItemGroup>

	//nuget packages

  </ItemGroup>

</Project>

.NET MAUI Class Library .csproj:


<Project Sdk="Microsoft.NET.Sdk">

	<PropertyGroup>

		<TargetFrameworks>net8.0-android;net8.0-ios</TargetFrameworks>

		<UseMaui>true</UseMaui>

		<SingleProject>true</SingleProject>

		<ImplicitUsings>enable</ImplicitUsings>

		<Nullable>enable</Nullable>

		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">11.0</SupportedOSPlatformVersion>

		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'">21.0</SupportedOSPlatformVersion>

	</PropertyGroup>

	<ItemGroup>

	  <AndroidAsset Remove="Platforms\Android\Assets\Extensions\DrawableExtensions.cs" />

	</ItemGroup>

	<ItemGroup>

	  <AndroidResource Remove="Platforms\Android\Resources\drawable\pma_background.png" />

	  //remaining

	</ItemGroup>

	<ItemGroup>

	  <None Remove="Platforms\Android\Assets\Roboto-Bold.ttf" />

	  //remaining

	</ItemGroup>

	<ItemGroup>

	  <MauiImage Include="Platforms\Android\Resources\drawable\pma_background.png" />

	  //remaining

	</ItemGroup>

	<ItemGroup>

		//nuget packages

	</ItemGroup>

	<ItemGroup Condition="'$(TargetFramework)' == 'net8.0-android'">

		//nuget packages

	</ItemGroup>

	

	<ItemGroup>

	  <ProjectReference Include="..\Clinical6SDK\Clinical6SDK.csproj" />

	</ItemGroup>

	<ItemGroup>

	  <MauiXaml Update="AppShared.xaml">

	    <Generator>MSBuild:Compile</Generator>

	  </MauiXaml>

	  //remaining

	</ItemGroup>

	<ItemGroup Condition="'$(TargetFramework)' == 'net8.0-android'">

	  <PackageReference Include="Xamarin.AndroidX.Activity.Ktx">

	    <Version>1.10.1.2</Version>

	  </PackageReference>

	  //Remaining

	</ItemGroup>

</Project>

Do I need to update it to .net 9? I like to go with .net 8. I am facing this issue on windows visual studio. I can't build Android application due to this issue. Before updating VS it was working fine.

Update 1

I removed the ios sections from .csproj and now I am able to build and run the Android part.

<TargetFrameworks>net8.0-android</TargetFrameworks> // removed ;net8.0-ios
<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">11.0</SupportedOSPlatformVersion>

Update 2

I have updated TargetFrameworks and and commented the below line from both MAUI project and MAUI class library .csproj files as per your suggestion.

 
//Commented below part
<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">11.0</SupportedOSPlatformVersion>

But I am getting below errors

The workload 'net8.0-ios11.0' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/maui-support-policy for more information about the support policy.
1.0 is not a valid TargetPlatformVersion for ios. Valid versions include: None

Answer accepted by question author

1 additional answer

Your answer

Answer 1

Michael Le (WICLOUD CORPORATION) 3,495 Microsoft External Staff

Hello Sreenivasan,

To resolve the specific build error you're encountering, you can try update the target framework versions in your project files.

Add this line to both your main MAUI project and MAUI class library .csproj files:

<TargetFrameworks>net8.0-android;net8.0-ios11.0</TargetFrameworks>

And remove the SupportedOSPlatformVersion line for iOS if it exists.

Do I need to update it to .net 9? I like to go with .net 8.

Since .NET MAUI 10 releases next month, you can still continue development on MAUI 8 for the time being, but start testing your app on MAUI 10 as soon as possible. It is always recommended to keep your projects updated to the latest stable versions.

You can continue development for now, but be aware of these considerations:

Security updates are no longer provided for MAUI 8
Xcode compatibility may become an issue for iOS deployments
New iOS/Android API features won't be available

I hope this clarifies.

Sreenivasan, Sreejith 80 Reputation points

2025-10-23T06:43:00.4866667+00:00

@Michael Le (WICLOUD CORPORATION)

I have tried your suggestions and edited the question with my findings, please check update 1 and update 2.
Michael Le (WICLOUD CORPORATION) 3,495 Reputation points Microsoft External Staff

2025-10-23T07:11:12.0133333+00:00
Thank you for the follow up. Can you please try the following steps and let me know the results:

Reinstall the ios workload: open visual studio installer, modify your installation, and reinstall the .net maui workload

Verify xcode installation: ensure you have xcode 15.2 or compatible version installed and run sudo xcode-select --install

Clear build caches: delete all bin and obj folders in your solution, then clean and rebuild

But it is likely not a configuration problem on your side. Without receiving updates, .NET MAUI 8 can't be guaranteed to work with the current Visual Studio toolchain.
Sreenivasan, Sreejith 80 Reputation points

2025-10-23T07:19:33.9433333+00:00

@Michael Le (WICLOUD CORPORATION)

Reinstall the ios workload:

I have no admin access so I can't reinstall the MAUI workload.

Verify xcode installation

I am facing this issue in windows version.

Did you see my update1?
Michael Le (WICLOUD CORPORATION) 3,495 Reputation points Microsoft External Staff

2025-10-23T08:38:30.3866667+00:00

Sorry if I misunderstood but I'm confused about your current setup.

In Update 1, you only confirmed that removing iOS from your project allowed you to successfully build for Android.

However, in Update 2, you were still attempting to resolve the iOS build issue. The error Valid versions include: None indicates that Visual Studio on your Windows machine cannot locate any Apple development tools. Even on Windows, if you want to build for iOS, you must have a Mac with Xcode installed and properly configured as a build host. That is why I asked about it.

As noted in this GitHub issue, contributors have warned that using unsupported framework versions may result in compatibility issues with current toolchains. Attempting workarounds on .NET MAUI 8 cannot be guaranteed to provide reliable results.

For reliable cross-platform development supporting both Android and iOS, you should plan to upgrade your project to a supported framework version, either 9 (currently available) or the upcoming .NET MAUI 10.
Sreenivasan, Sreejith 80 Reputation points

2025-10-23T09:14:03.62+00:00

@Michael Le (WICLOUD CORPORATION)

I removed iOS section to check whether the issue will resolve or not. I am trying to fix the build issue by keeping both android and iOS.

For reliable cross-platform development supporting both Android and iOS, you should plan to upgrade your project to a supported framework version, either 9 (currently available) or the upcoming .NET MAUI 10.

Is there any way to fix this by keeping iOS with .net8?
Michael Le (WICLOUD CORPORATION) 3,495 Reputation points Microsoft External Staff

2025-10-23T10:08:51.8766667+00:00

Unfortunately, .NET MAUI 8 is out of support.

Answer 2

Bruce (SqlWork.com) 81,191 Volunteer Moderator

Maui 8 support ended last May. The real issue besides no Maui support is Xcode support. Maui 8 only supports Xcode v16.1 and some point Apple will not support Xcode 16.1 for signing apps. When this happens you will not be able to publish to the store without upgrading to a later version of Maui.

at this late date, you should be looking at updating to Maui 10, which releases next month.

Sreenivasan, Sreejith 80 Reputation points

2025-10-23T04:14:01.1166667+00:00

@Bruce (SqlWork.com) I am facing this issue on windows visual studio. I can't build Android application due to this issue. Before updating VS it was working fine.

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Build issue after updating VS to latest

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