What does this mean and how can it be resolved properly? Package 'Microsoft.AspNet.Mvc 5.2.8' was restored using '...' instead of the project target framework 'net8.0'. This package may not be fully compatible with your project.

[myyandar]

What does this mean and how can it be resolved properly?

Package 'Microsoft.AspNet.Mvc 5.2.8' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework 'net8.0'. This package may not be fully compatible with your project.

EF Core version:
Database provider: Microsoft.EntityFrameworkCore.SqlServer
Target framework: .NET 8.0
Operating system:
IDE: Visual Studio 2022 17.12.1

This is not a coding issue.

[ErikEJ]

You have a reference to an old ASP.NET dll (.NET Framework) - please share a full repro.

What does this have to do with EF Core?

[myyandar]

The problem has been there since the very first time I updated packages. Perhaps my project file may give indications:

net8.0 enable enable aspnet-IssWeb-96ac3037-0def-4d49-b7a7-f3bd94d2fc41 all runtime; build; native; contentfiles; analyzers; buildtransitive

[myyandar]

[myyandar]

Please guide me through updating the "old.dll" you mentioned to a .Net 8 MVC web application-compatible one.

[ErikEJ]

You need to format you project file as code, no one can read it here.

[myyandar]

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

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>aspnet-IssWeb-96ac3037-0def-4d49-b7a7-f3bd94d2fc41</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Azure.Identity" Version="1.11.4" />
    <PackageReference Include="MailKit" Version="4.8.0" />
    <PackageReference Include="Microsoft.AspNet.Mvc" Version="5.3.0" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Facebook" Version="8.0.10" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Google" Version="8.0.10" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" Version="8.0.10" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Twitter" Version="8.0.10" />
    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="8.0.10" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.10" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.10" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="8.0.10" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.10" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.10">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
    <PackageReference Include="Microsoft.IdentityModel.JsonWebTokens" Version="8.2.1" />
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="8.0.7" />
    <PackageReference Include="MimeKit" Version="4.8.0" />
    <PackageReference Include="PayPalCheckoutSdk.DotNet7" Version="1.0.5" />
    <PackageReference Include="Stripe.net" Version="47.1.0-beta.3" />
    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.2.1" />
    <PackageReference Include="System.Text.Json" Version="9.0.0" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="Areas\Admin\Data\" />
    <Folder Include="Areas\Admin\Models\" />
  </ItemGroup>

  <ItemGroup>
    <None Include="wwwroot\Templates\EmailTemplate.html" />
  </ItemGroup>

</Project>
`