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Q&A

How to find out which packages target .NET 3.1 in a .NET 5 application?

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−0

After upgrading a Web application from ASP.NET Core 3.1 to ASP.NET Core 5.0, it worked fine on an existing server.

However, when deployed on a server that had only .NET 5.0 installed, the application pool crashed and said (as a logged event) that .NET Core 3.1 is missing.

Clearly, some packages were not fully upgraded. The target framework is 5.0 for all projects and all Microsoft.* NuGet packages are using 5.* versions (e.g. EntityFramework).

I am wondering how can I find which packages (or other settings?) still require .NET 3.1.

I found dotnet list package for listing all solution packages and tried the following:

dotnet list Ubisoft.PtbNext.sln package --include-transitive --outdated --highest-minor

which provided all packages, including the "transitive" ones:

The following sources were used:
   https://api.nuget.org/v3/index.json
   https://artifactory.Foo.org/api/nuget/nuget/
   C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\

Project `Foo.Bar.WebApi` has the following updates to its packages
   [net5.0]: 
   Top-level Package                                                        Requested   Resolved   Latest
   > Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore                   5.0.5       5.0.5      5.0.6 
   > Microsoft.AspNetCore.Mvc.NewtonsoftJson                                5.0.5       5.0.5      5.0.6 
   > Microsoft.AspNetCore.SpaServices.Extensions                            5.0.5       5.0.5      5.0.6 
   > Microsoft.EntityFrameworkCore                                          5.0.5       5.0.5      5.0.6 
   > Microsoft.EntityFrameworkCore.Tools                                    5.0.5       5.0.5      5.0.6 
   > Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore      5.0.5       5.0.5      5.0.6 
   > Microsoft.Identity.Web                                                 1.9.1       1.9.1      1.12.0
   > NLog.Schema                                                            4.7.9       4.7.9      4.7.10
   > NLog.WindowsIdentity                                                   4.7.9       4.7.9      4.7.10
   > Swashbuckle.AspNetCore                                                 6.1.3       6.1.3      6.1.4 

   Transitive Package                                                                   Resolved   Latest                  
   > Azure.Core                                                                         1.4.1      1.14.0                  
   > Azure.Identity                                                                     1.2.3      1.4.0                   
   > FluentValidation                                                                   10.0.4     10.2.2                  
   > FluentValidation.DependencyInjectionExtensions                                     10.0.4     10.2.2                  
   > Humanizer.Core                                                                     2.8.26     2.10.1                  
   > Microsoft.AspNet.WebApi.Client                                                     5.2.4      5.2.7                   
   > Microsoft.AspNetCore.Authentication.JwtBearer                                      5.0.0      5.0.6                   
   > Microsoft.AspNetCore.Authentication.OpenIdConnect                                  5.0.0      5.0.6                   
   > Microsoft.AspNetCore.JsonPatch                                                     5.0.5      5.0.6                   
   > Microsoft.Bcl.AsyncInterfaces                                                      1.0.0      1.1.1                   
   > Microsoft.Data.SqlClient                                                           2.0.1      2.1.3                   
   > Microsoft.Data.SqlClient.SNI.runtime                                               2.0.1      2.1.1                   
   > Microsoft.EntityFrameworkCore.Abstractions                                         5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Analyzers                                            5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Design                                               5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.InMemory                                             5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Relational                                           5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.SqlServer                                            5.0.5      5.0.6                   
   > Microsoft.Extensions.ApiDescription.Server                                         3.0.0      3.1.15                  
   > Microsoft.Extensions.Diagnostics.HealthChecks                                      5.0.5      5.0.6                   
   > Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions                         5.0.5      5.0.6                   
   > Microsoft.Extensions.Primitives                                                    5.0.0      5.0.1                   
   > Microsoft.Identity.Client                                                          4.29.0     4.31.0                  
   > Microsoft.Identity.Client.Extensions.Msal                                          2.12.0     2.18.4                  
   > Microsoft.IdentityModel.JsonWebTokens                                              6.10.1     6.11.1                  
   > Microsoft.IdentityModel.Logging                                                    6.10.1     6.11.1                  
   > Microsoft.IdentityModel.Protocols                                                  6.10.1     6.11.1                  
   > Microsoft.IdentityModel.Protocols.OpenIdConnect                                    6.10.1     6.11.1                  
   > Microsoft.IdentityModel.Tokens                                                     6.10.1     6.11.1                  
   > Microsoft.Net.Http.Headers                                                         2.2.0      2.2.8                   
   > Microsoft.NETCore.Platforms                                                        5.0.0      5.0.2                   
   > Microsoft.NETCore.Targets                                                          1.1.0      1.1.4                   
   > NLog                                                                               4.7.9      4.7.10                  
   > RabbitMQ.Client                                                                    5.0.1      5.2.0                   
   > runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl           4.3.0      4.3.3                   
   > runtime.fedora.23-x64.runtime.native.System.Security.Cryptography.OpenSsl          4.3.0      4.3.3                   
   > runtime.fedora.24-x64.runtime.native.System.Security.Cryptography.OpenSsl          4.3.0      4.3.3                   
   > runtime.native.System                                                              4.3.0      4.3.1                   
   > runtime.native.System.IO.Compression                                               4.3.0      4.3.2                   
   > runtime.native.System.Net.Http                                                     4.3.0      4.3.1                   
   > runtime.native.System.Net.Security                                                 4.3.0      4.3.1                   
   > runtime.native.System.Security.Cryptography.Apple                                  4.3.0      4.3.1                   
   > runtime.native.System.Security.Cryptography.OpenSsl                                4.3.0      4.3.3                   
   > runtime.opensuse.13.2-x64.runtime.native.System.Security.Cryptography.OpenSsl      4.3.0      4.3.3                   
   > runtime.opensuse.42.1-x64.runtime.native.System.Security.Cryptography.OpenSsl      4.3.0      4.3.3                   
   > runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.Apple            4.3.0      4.3.1                   
   > runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.OpenSsl          4.3.0      4.3.3                   
   > runtime.rhel.7-x64.runtime.native.System.Security.Cryptography.OpenSsl             4.3.0      4.3.3                   
   > runtime.ubuntu.14.04-x64.runtime.native.System.Security.Cryptography.OpenSsl       4.3.0      4.3.3                   
   > runtime.ubuntu.16.04-x64.runtime.native.System.Security.Cryptography.OpenSsl       4.3.0      4.3.3                   
   > runtime.ubuntu.16.10-x64.runtime.native.System.Security.Cryptography.OpenSsl       4.3.0      4.3.3                   
   > Swashbuckle.AspNetCore.Swagger                                                     6.1.3      6.1.4                   
   > Swashbuckle.AspNetCore.SwaggerGen                                                  6.1.3      6.1.4                   
   > Swashbuckle.AspNetCore.SwaggerUI                                                   6.1.3      6.1.4                   
   > System.Buffers                                                                     4.5.0      4.5.1                   
   > System.Console                                                                     4.3.0      4.3.1                   
   > System.Drawing.Common                                                              5.0.0      5.0.2                   
   > System.IdentityModel.Tokens.Jwt                                                    6.10.1     6.11.1                  
   > System.IO.Pipelines                                                                4.5.2      4.7.4                   
   > System.Linq.Dynamic.Core                                                           1.2.9      1.2.10                  
   > System.Memory                                                                      4.5.3      4.5.4                   
   > System.Net.Http                                                                    4.3.0      4.3.4                   
   > System.Net.Primitives                                                              4.3.0      4.3.1                   
   > System.Net.Security                                                                4.3.0      4.3.2                   
   > System.Reflection.Emit.ILGeneration                                                4.3.0      4.7.0                   
   > System.Reflection.Emit.Lightweight                                                 4.3.0      4.7.0                   
   > System.Reflection.TypeExtensions                                                   4.3.0      4.7.0                   
   > System.Runtime                                                                     4.3.0      4.3.1                   
   > System.Runtime.CompilerServices.Unsafe                                             4.5.1      4.7.1                   
   > System.Runtime.Extensions                                                          4.3.0      4.3.1                   
   > System.Security.Cryptography.Algorithms                                            4.3.0      4.3.1                   
   > System.Security.Cryptography.Cng                                                   4.5.0      4.7.0                   
   > System.Security.Cryptography.OpenSsl                                               4.3.0      4.7.0                   
   > System.Security.Cryptography.Pkcs                                                  4.5.0      4.7.0                   
   > System.Security.Cryptography.X509Certificates                                      4.3.0      4.3.2                   
   > System.Security.Cryptography.Xml                                                   4.5.0      4.7.0                   
   > System.Text.Encoding.CodePages                                                     4.7.0      4.7.1                   
   > System.Text.RegularExpressions                                                     4.3.0      4.3.1                   
   > System.Threading.Tasks.Extensions                                                  4.5.2      4.5.4                   
   > System.Xml.ReaderWriter                                                            4.3.0      4.3.1                   
   > Foo.Bar.ODataNuget                                                           1.0.0.19   1.0.0.23                

Project `Foo.Bar.Application` has the following updates to its packages
   [net5.0]: 
   Top-level Package                                     Requested   Resolved   Latest
   > FluentValidation.DependencyInjectionExtensions      10.0.4      10.0.4     10.2.2
   > Microsoft.EntityFrameworkCore                       5.0.5       5.0.5      5.0.6 
   > System.Linq.Dynamic.Core                            1.2.9       1.2.9      1.2.10

   Transitive Package                                Resolved   Latest                  
   > FluentValidation                                10.0.4     10.2.2                  
   > Microsoft.EntityFrameworkCore.Abstractions      5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Analyzers         5.0.5      5.0.6                   
   > Microsoft.Extensions.Primitives                 5.0.0      5.0.1                   
   > Microsoft.Net.Http.Headers                      2.2.0      2.2.8                   
   > NLog                                            4.7.9      4.7.10                  
   > System.Buffers                                  4.5.0      4.5.1                   
   > System.Text.Encodings.Web                       4.5.0      4.7.2                   
   > Foo.Bar.Common                          1.0.0      Not found at the sources
   > Foo.Bar.Domain                          1.0.0      Not found at the sources

Project `Foo.Bar.Domain` has the following updates to its packages
   [net5.0]: 
   Top-level Package                                     Requested   Resolved   Latest
   > FluentValidation.DependencyInjectionExtensions      10.0.4      10.0.4     10.2.2

   Transitive Package                                Resolved   Latest                  
   > FluentValidation                                10.0.4     10.2.2                  
   > Microsoft.EntityFrameworkCore                   5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Abstractions      5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Analyzers         5.0.5      5.0.6                   
   > Microsoft.Extensions.Primitives                 5.0.0      5.0.1                   
   > Microsoft.Net.Http.Headers                      2.2.0      2.2.8                   
   > NLog                                            4.7.9      4.7.10                  
   > System.Buffers                                  4.5.0      4.5.1                   
   > System.Text.Encodings.Web                       4.5.0      4.7.2                   
   > Foo.Bar.Common                          1.0.0      Not found at the sources

Project `Foo.Bar.Infrastructure` has the following updates to its packages
   [net5.0]: 
   Top-level Package                              Requested   Resolved   Latest  
   > Microsoft.EntityFrameworkCore                5.0.5       5.0.5      5.0.6   
   > Microsoft.EntityFrameworkCore.InMemory       5.0.5       5.0.5      5.0.6   
   > Microsoft.EntityFrameworkCore.SqlServer      5.0.5       5.0.5      5.0.6   
   > Microsoft.EntityFrameworkCore.Tools          5.0.5       5.0.5      5.0.6   
   > NLog                                         4.7.9       4.7.9      4.7.10  
   > Foo.Bar.ODataNuget                     1.0.0.19    1.0.0.19   1.0.0.23

   Transitive Package                                                                   Resolved   Latest                  
   > FluentValidation                                                                   10.0.4     10.2.2                  
   > FluentValidation.DependencyInjectionExtensions                                     10.0.4     10.2.2                  
   > Humanizer.Core                                                                     2.8.26     2.10.1                  
   > Microsoft.AspNet.WebApi.Client                                                     5.2.4      5.2.7                   
   > Microsoft.Data.SqlClient                                                           2.0.1      2.1.3                   
   > Microsoft.Data.SqlClient.SNI.runtime                                               2.0.1      2.1.1                   
   > Microsoft.EntityFrameworkCore.Abstractions                                         5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Analyzers                                            5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Design                                               5.0.5      5.0.6                   
   > Microsoft.EntityFrameworkCore.Relational                                           5.0.5      5.0.6                   
   > Microsoft.Extensions.Primitives                                                    5.0.0      5.0.1                   
   > Microsoft.Identity.Client                                                          4.14.0     4.31.0                  
   > Microsoft.Net.Http.Headers                                                         2.2.0      2.2.8                   
   > Microsoft.NETCore.Platforms                                                        5.0.0      5.0.2                   
   > Microsoft.NETCore.Targets                                                          1.1.3      1.1.4                   
   > Newtonsoft.Json.Bson                                                               1.0.1      1.0.2                   
   > RabbitMQ.Client                                                                    5.0.1      5.2.0                   
   > runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl           4.3.0      4.3.3                   
   > runtime.fedora.23-x64.runtime.native.System.Security.Cryptography.OpenSsl          4.3.0      4.3.3                   
   > runtime.fedora.24-x64.runtime.native.System.Security.Cryptography.OpenSsl          4.3.0      4.3.3                   
   > runtime.native.System                                                              4.3.0      4.3.1                   
   > runtime.native.System.IO.Compression                                               4.3.0      4.3.2                   
   > runtime.native.System.Net.Http                                                     4.3.0      4.3.1                   
   > runtime.native.System.Net.Security                                                 4.3.0      4.3.1                   
   > runtime.native.System.Security.Cryptography.Apple                                  4.3.0      4.3.1                   
   > runtime.native.System.Security.Cryptography.OpenSsl                                4.3.0      4.3.3                   
   > runtime.opensuse.13.2-x64.runtime.native.System.Security.Cryptography.OpenSsl      4.3.0      4.3.3                   
   > runtime.opensuse.42.1-x64.runtime.native.System.Security.Cryptography.OpenSsl      4.3.0      4.3.3                   
   > runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.Apple            4.3.0      4.3.1                   
   > runtime.osx.10.10-x64.runtime.native.System.Security.Cryptography.OpenSsl          4.3.0      4.3.3                   
   > runtime.rhel.7-x64.runtime.native.System.Security.Cryptography.OpenSsl             4.3.0      4.3.3                   
   > runtime.ubuntu.14.04-x64.runtime.native.System.Security.Cryptography.OpenSsl       4.3.0      4.3.3                   
   > runtime.ubuntu.16.04-x64.runtime.native.System.Security.Cryptography.OpenSsl       4.3.0      4.3.3                   
   > runtime.ubuntu.16.10-x64.runtime.native.System.Security.Cryptography.OpenSsl       4.3.0      4.3.3                   
   > System.Buffers                                                                     4.5.0      4.5.1                   
   > System.Console                                                                     4.3.0      4.3.1                   
   > System.Drawing.Common                                                              5.0.0      5.0.2                   
   > System.IO.Pipelines                                                                4.5.2      4.7.4                   
   > System.Linq.Dynamic.Core                                                           1.2.9      1.2.10                  
   > System.Memory                                                                      4.5.1      4.5.4                   
   > System.Net.Http                                                                    4.3.0      4.3.4                   
   > System.Net.Primitives                                                              4.3.0      4.3.1                   
   > System.Net.Security                                                                4.3.0      4.3.2                   
   > System.Reflection.Emit.ILGeneration                                                4.3.0      4.7.0                   
   > System.Reflection.Emit.Lightweight                                                 4.3.0      4.7.0                   
   > System.Reflection.TypeExtensions                                                   4.3.0      4.7.0                   
   > System.Runtime                                                                     4.3.0      4.3.1                   
   > System.Runtime.CompilerServices.Unsafe                                             4.5.1      4.7.1                   
   > System.Runtime.Extensions                                                          4.3.0      4.3.1                   
   > System.Security.Cryptography.Algorithms                                            4.3.0      4.3.1                   
   > System.Security.Cryptography.Cng                                                   4.5.0      4.7.0                   
   > System.Security.Cryptography.OpenSsl                                               4.3.0      4.7.0                   
   > System.Security.Cryptography.Pkcs                                                  4.5.0      4.7.0                   
   > System.Security.Cryptography.X509Certificates                                      4.3.0      4.3.2                   
   > System.Security.Cryptography.Xml                                                   4.5.0      4.7.0                   
   > System.Text.Encoding.CodePages                                                     4.7.0      4.7.1                   
   > System.Text.Encodings.Web                                                          4.5.0      4.7.2                   
   > System.Text.RegularExpressions                                                     4.3.0      4.3.1                   
   > System.Threading.Tasks.Extensions                                                  4.3.0      4.5.4                   
   > System.Xml.ReaderWriter                                                            4.3.0      4.3.1                   
   > Foo.Bar.Application                                                        1.0.0      Not found at the sources
   > Foo.Bar.Common                                                             1.0.0      Not found at the sources
   > Foo.Bar.Domain                                                             1.0.0      Not found at the sources

    

I have checked the list, but I cannot figure out how can I deduct which package is to blame for not using .NET 5.

Any idea about how to find out the culprit?

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