In Visual Studio 2022 I developped a Xamarin.Forms solution that compiles and runs on Android and UWP (Windows). I used Microsoft's Upgrade Assistant to upgrade to .Net 8.0 and .Net MAUI. This results in 4 errors for the UWP project (German version of VS):
Fehler NU1202 Das Paket System.Security.Principal.Windows 5.0.0 ist nicht mit net8.0-windows10.0.19041 (.NETCoreApp,Version=v8.0)/win10-x64 kompatibel. Paket System.Security.Principal.Windows 5.0.0 unterstützt Folgendes: uap10.0.16299 (UAP,Version=v10.0.16299)That means: packet System.Security.Principal.Windows 5.0.0 is not compatible with net8.0-windows10.0.19041 (.NETCoreApp,Version=v8.0).
Packet System.Security.Principal.Windows 5.0.0 supports uap10.0.16299 (UAP,Version=v10.0.16299).
Any ideas what to do?
Edit:This is my project file after applying the upgrade assistant:
<Project Sdk="Microsoft.NET.Sdk"><PropertyGroup><Platform Condition=" '$(Platform)' == ''">x86</Platform><TemplateGuid>{98C37F10-6541-44BE-B1E6-7EB3EB8C08F1}</TemplateGuid><OutputType>Exe</OutputType><RootNamespace>BeMoSoft.Packer.UWP</RootNamespace><DefaultLanguage>en-US</DefaultLanguage><TargetPlatformMinVersion>10.0.16299.0</TargetPlatformMinVersion><EnableDotNetNativeCompatibleProfile>true</EnableDotNetNativeCompatibleProfile><UseWinUI>true</UseWinUI><Platforms>x86;x64;arm64</Platforms><ApplicationManifest>app.manifest</ApplicationManifest><EnablePreviewMsixTooling>true</EnablePreviewMsixTooling><RuntimeIdentifiers>win10-x86;win10-x64;win10-arm64</RuntimeIdentifiers><PublishProfile>win10-$(Platform).pubxml</PublishProfile><TargetFrameworks>net8.0-windows10.0.19041.0</TargetFrameworks><UseMaui>True</UseMaui></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'"><OutputPath>bin\ARM\Debug\</OutputPath><DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'"><OutputPath>bin\ARM\Release\</OutputPath><DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess><UseDotNetNativeToolchain>true</UseDotNetNativeToolchain></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'"><OutputPath>bin\x64\Debug\</OutputPath><DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'"><OutputPath>bin\x64\Release\</OutputPath><DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess><UseDotNetNativeToolchain>true</UseDotNetNativeToolchain></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'"><OutputPath>bin\x86\Debug\</OutputPath><DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'"><OutputPath>bin\x86\Release\</OutputPath><DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess><UseDotNetNativeToolchain>true</UseDotNetNativeToolchain></PropertyGroup><ItemGroup><AppxManifest Include="Package.appxmanifest"><SubType>Designer</SubType></AppxManifest></ItemGroup><ItemGroup><Content Include="icon_backup.png" /><Content Include="icon_journeys.png" /><Content Include="icon_settings.png" /><Content Include="icon_task.png" /><Content Include="icon_journey.png" /><Content Include="icon_templates.png" /><Content Include="packer_logo.png" /><Content Include="Properties\Default.rd.xml" /><Content Include="Assets\LargeTile.scale-100.png" /><Content Include="Assets\LargeTile.scale-200.png" /><Content Include="Assets\LargeTile.scale-400.png" /><Content Include="Assets\SmallTile.scale-100.png" /><Content Include="Assets\SmallTile.scale-200.png" /><Content Include="Assets\SmallTile.scale-400.png" /><Content Include="Assets\SplashScreen.scale-100.png" /><Content Include="Assets\SplashScreen.scale-200.png" /><Content Include="Assets\SplashScreen.scale-400.png" /><Content Include="Assets\Square150x150Logo.scale-100.png" /><Content Include="Assets\Square150x150Logo.scale-200.png" /><Content Include="Assets\Square150x150Logo.scale-400.png" /><Content Include="Assets\Square44x44Logo.altform-unplated_targetsize-16.png" /><Content Include="Assets\Square44x44Logo.altform-unplated_targetsize-256.png" /><Content Include="Assets\Square44x44Logo.altform-unplated_targetsize-48.png" /><Content Include="Assets\Square44x44Logo.scale-100.png" /><Content Include="Assets\Square44x44Logo.scale-200.png" /><Content Include="Assets\Square44x44Logo.scale-400.png" /><Content Include="Assets\Square44x44Logo.targetsize-16.png" /><Content Include="Assets\Square44x44Logo.targetsize-256.png" /><Content Include="Assets\Square44x44Logo.targetsize-48.png" /><Content Include="Assets\StoreLogo.scale-100.png" /><Content Include="Assets\StoreLogo.scale-200.png" /><Content Include="Assets\StoreLogo.scale-400.png" /><Content Include="Assets\Wide310x150Logo.scale-100.png" /><Content Include="Assets\Wide310x150Logo.scale-200.png" /><Content Include="Assets\Wide310x150Logo.scale-400.png" /><Content Include="xamarin_logo.png" /><Content Include="icon_about.png" /><Content Include="icon_feed.png" /></ItemGroup><ItemGroup><ProjectReference Include="..\Packer\Packer.csproj" /><ProjectReference Include="..\UpdateClient\UpdateClient.csproj" /></ItemGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Test|ARM'"><DebugSymbols>true</DebugSymbols><OutputPath>bin\ARM\Test\</OutputPath><DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP;CODE_ANALYSIS</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess><LangVersion>7.3</LangVersion></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Test|x64'"><DebugSymbols>true</DebugSymbols><OutputPath>bin\x64\Test\</OutputPath><DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP;CODE_ANALYSIS</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess><LangVersion>7.3</LangVersion></PropertyGroup><PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Test|x86'"><DebugSymbols>true</DebugSymbols><OutputPath>bin\x86\Test\</OutputPath><DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP;CODE_ANALYSIS</DefineConstants><NoWarn>;2008</NoWarn><UseVSHostingProcess>false</UseVSHostingProcess><LangVersion>7.3</LangVersion></PropertyGroup><PropertyGroup /><ItemGroup><PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" /><PackageReference Include="Microsoft.Maui.Controls.Compatibility" Version="$(MauiVersion)" /><PackageReference Include="Microsoft.WindowsAppSDK" Version="1.5.240311000" /><PackageReference Include="Microsoft.Graphics.Win2D" Version="1.2.0" /><PackageReference Include="Microsoft.Windows.Compatibility" Version="8.0.3" /></ItemGroup></Project>