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C#•7mo ago

System.Private.ServiceModel not found

I've been using a library for opcua and haven't had any problems until now, didn't change anything in dependencies, but suddenly, I get the error during runtime that the System.Private.ServiceModel is not found. When I add a reference to the exact same version as the one that the error message is indicating, it is telling me that there is a conflict:

Severity Code Description Project File Line Suppression State
Error NU1605 Warning as Error: A downgrade of the "System.Private.ServiceModel" package from 4.5.3 to 4.5.1 has been detected. Refer directly from the project to the package to select a different version.
MyProject -> MyProject.Shared -> Opc.UaFx.Advanced 2.41.1 -> System.ServiceModel.Primitives 4.5.3 -> System.Private.ServiceModel (>= 4.5.3)

Severity Code Description Project File Line Suppression State
Error NU1605 Warning as Error: A downgrade of the "System.Private.ServiceModel" package from 4.5.3 to 4.5.1 has been detected. Refer directly from the project to the package to select a different version.
MyProject -> MyProject.Shared -> Opc.UaFx.Advanced 2.41.1 -> System.ServiceModel.Primitives 4.5.3 -> System.Private.ServiceModel (>= 4.5.3)

I honestly have no idea what the problem is, I've had a similiar problem before with System.IO.Ports, but that somehow dissapeared at some point. When I do a clean build without the reference to System.Private.ServiceModel, I also don't get the dll in the output directory, despite it being referenced by the other package, and if I look at older releases, the dll was always present. This has been bugging me for a whole day and the only workaround is to manually copy the dll or add the dll to the project (which in my opinion is ugly as hell) Hope somebody might know what the problem could be. Thanks in advance.

53 Replies

reflectronic•7mo ago

is this the full error? i think there is supposed to be more text

soziapathOP•7mo ago

The only additional thing after is the project files that cause it, basically the same line as MyProject -> ... but with the .csproj suffix

reflectronic•7mo ago

the error does not make sense. it does not show what is downgrading System.Private.ServiceModel to 4.5.1 it is uspposed to show the two different paths to System.Private.ServiceModel that resolve to different versions

soziapathOP•7mo ago

Ah, yeah, sorry my bad, didn't see the difference in there

Severity Code Description Project File Line Suppression State
Error NU1605 Warning as Error: A downgrade of the "System.Private.ServiceModel" package from 4.5.3 to 4.5.1 has been detected. Refer directly from the project to the package to select a different version.
ProjectA -> ProjectA.Shared -> AdvancedLibrary 2.41.1 -> System.ServiceModel.Primitives 4.5.3 -> System.Private.ServiceModel (>= 4.5.3)
ProjectA -> ProjectA.Shared -> System.Private.ServiceModel (>= 4.5.0.3) ProjectA [path]\ProjectA.csproj

Severity Code Description Project File Line Suppression State
Error NU1605 Warning as Error: A downgrade of the "System.Private.ServiceModel" package from 4.5.3 to 4.5.1 has been detected. Refer directly from the project to the package to select a different version.
ProjectA -> ProjectA.Shared -> AdvancedLibrary 2.41.1 -> System.ServiceModel.Primitives 4.5.3 -> System.Private.ServiceModel (>= 4.5.3)
ProjectA -> ProjectA.Shared -> System.Private.ServiceModel (>= 4.5.0.3) ProjectA [path]\ProjectA.csproj

reflectronic•7mo ago

System.Private.ServiceModel (>= 4.5.0.3)

it seems like you meant to write 4.5.3 not 4.5.0.3 yes, the assembly version might be 4.5.0.3. but what matters here is the package version, not the assembly version the package 4.5.3 contains the assembly version 4.5.0.3. they are different for reasons

soziapathOP•7mo ago

okay, then at least that is resolved, but the question remains, why I need to add the reference in the first place, since the library has it as dependency

reflectronic•7mo ago

i don't know

soziapathOP•7mo ago

Okay, I added it as reference with Version 4.5.3, but I still don't get the dll in the output

reflectronic•7mo ago

it shows up in my output when i reference Opc.UaFx.Advanced under runtimes/

soziapathOP•7mo ago

same for me, but not in the root output directory, which seems to be required? Still get the error unless I copy it manually to the same path as the executable

reflectronic•7mo ago

do you not have a ProjectA.deps.json file in your build output

soziapathOP•7mo ago

I do have that dependency file and it contains the Dependency

      "System.Private.ServiceModel/4.5.3": {
        "dependencies": {
          "Microsoft.NETCore.Platforms": "3.1.0",
          "System.Reflection.DispatchProxy": "4.5.0",
          "System.Security.Principal.Windows": "4.7.0"
        },
        "runtimeTargets": {
          "runtimes/unix/lib/netstandard2.0/System.Private.ServiceModel.dll": {
            "rid": "unix",
            "assetType": "runtime",
            "assemblyVersion": "4.5.0.3",
            "fileVersion": "4.6.26720.1"
          },
          "runtimes/win/lib/netstandard2.0/System.Private.ServiceModel.dll": {
            "rid": "win",
            "assetType": "runtime",
            "assemblyVersion": "4.5.0.3",
            "fileVersion": "4.6.26720.1"
          }
        }
      },

      "System.Private.ServiceModel/4.5.3": {
        "dependencies": {
          "Microsoft.NETCore.Platforms": "3.1.0",
          "System.Reflection.DispatchProxy": "4.5.0",
          "System.Security.Principal.Windows": "4.7.0"
        },
        "runtimeTargets": {
          "runtimes/unix/lib/netstandard2.0/System.Private.ServiceModel.dll": {
            "rid": "unix",
            "assetType": "runtime",
            "assemblyVersion": "4.5.0.3",
            "fileVersion": "4.6.26720.1"
          },
          "runtimes/win/lib/netstandard2.0/System.Private.ServiceModel.dll": {
            "rid": "win",
            "assetType": "runtime",
            "assemblyVersion": "4.5.0.3",
            "fileVersion": "4.6.26720.1"
          }
        }
      },

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soziapathOP•7mo ago

I think that would be too much work to pseudonymize all the names while still keeping it functional^^

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soziapathOP•7mo ago

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

  <PropertyGroup>
    <TargetFramework>net6.0-windows</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <BaseOutputPath>..\..\..\bin</BaseOutputPath>
    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
    <UseWPF>True</UseWPF>
    <PlatformTarget>AnyCPU</PlatformTarget>
    <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
    <IsTestProject>true</IsTestProject>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.0" />
    <PackageReference Include="NUnit" Version="3.13.3" />
    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
    <PackageReference Include="Opc.UaFx.Advanced" Version="2.41.1" />
    <PackageReference Include="System.Private.ServiceModel" Version="4.5.3" />
    <PackageReference Include="pythonnet" Version="3.0.3" />
    <PackageReference Include="Syncfusion.Shared.WPF" Version="20.3.0.49" />
    <PackageReference Include="Syncfusion.Themes.Metro.WPF" Version="20.3.0.49" />
    <PackageReference Include="System.IO.Ports" Version="7.0.0" />
  </ItemGroup>


</Project>

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

  <PropertyGroup>
    <TargetFramework>net6.0-windows</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <BaseOutputPath>..\..\..\bin</BaseOutputPath>
    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
    <UseWPF>True</UseWPF>
    <PlatformTarget>AnyCPU</PlatformTarget>
    <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
    <IsTestProject>true</IsTestProject>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.0" />
    <PackageReference Include="NUnit" Version="3.13.3" />
    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
    <PackageReference Include="Opc.UaFx.Advanced" Version="2.41.1" />
    <PackageReference Include="System.Private.ServiceModel" Version="4.5.3" />
    <PackageReference Include="pythonnet" Version="3.0.3" />
    <PackageReference Include="Syncfusion.Shared.WPF" Version="20.3.0.49" />
    <PackageReference Include="Syncfusion.Themes.Metro.WPF" Version="20.3.0.49" />
    <PackageReference Include="System.IO.Ports" Version="7.0.0" />
  </ItemGroup>


</Project>

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reflectronic•7mo ago

i am certainly able to load it

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

    <PropertyGroup>
        <TargetFramework>net8.0</TargetFramework>
        <OutputType>Exe</OutputType>
        <LangVersion>latest</LangVersion>
        <ImplicitUsings>enable</ImplicitUsings>
    </PropertyGroup>

    <ItemGroup>
      <PackageReference Include="Opc.UaFx.Advanced" Version="2.41.1" />
    </ItemGroup>

</Project>

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

    <PropertyGroup>
        <TargetFramework>net8.0</TargetFramework>
        <OutputType>Exe</OutputType>
        <LangVersion>latest</LangVersion>
        <ImplicitUsings>enable</ImplicitUsings>
    </PropertyGroup>

    <ItemGroup>
      <PackageReference Include="Opc.UaFx.Advanced" Version="2.41.1" />
    </ItemGroup>

</Project>

using System.Collections.Generic;

Console.WriteLine("Hello World!");

var m = new SynchronizedCollection<int>();
m.Add(100);

Console.WriteLine(string.Join(',', AppDomain.CurrentDomain.GetAssemblies().Select(a => a.GetName().Name)));

using System.Collections.Generic;

Console.WriteLine("Hello World!");

var m = new SynchronizedCollection<int>();
m.Add(100);

Console.WriteLine(string.Join(',', AppDomain.CurrentDomain.GetAssemblies().Select(a => a.GetName().Name)));

prints out System.Private.ServiceModel among other things

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reflectronic•7mo ago

yes, it works fine

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reflectronic•7mo ago

what is the call stack when you hit this file not found error

soziapathOP•7mo ago

Ah, sorry, this was the ProjectA.Shared, this is the projectA.csproj:

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

  <PropertyGroup>
    <TargetFramework>net6.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWPF>true</UseWPF>
    <BaseOutputPath>..\..\..\bin</BaseOutputPath>
    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>    
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\..\ProjectA.Shared.csproj" />
  </ItemGroup>
  
  <ItemGroup>
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.0.0" />
    <PackageReference Include="MVTec.HalconDotNet-Windows" Version="22112.0.0" />
    <PackageReference Include="Syncfusion.Shared.WPF" Version="20.3.0.49" />
    <PackageReference Include="Syncfusion.Themes.Metro.WPF" Version="20.3.0.49" />
  </ItemGroup>

</Project>

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

  <PropertyGroup>
    <TargetFramework>net6.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWPF>true</UseWPF>
    <BaseOutputPath>..\..\..\bin</BaseOutputPath>
    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>    
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\..\ProjectA.Shared.csproj" />
  </ItemGroup>
  
  <ItemGroup>
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.0.0" />
    <PackageReference Include="MVTec.HalconDotNet-Windows" Version="22112.0.0" />
    <PackageReference Include="Syncfusion.Shared.WPF" Version="20.3.0.49" />
    <PackageReference Include="Syncfusion.Themes.Metro.WPF" Version="20.3.0.49" />
  </ItemGroup>

</Project>

Ah, is just replaced the sensitive stuff with bullshit and let chatgpt make it pretty, guess it replaced opcua as well. AdvancedLibrary is opc.uafx.advanced

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reflectronic•7mo ago

the restore error has been fixed but there is still a file not found error at runtime

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soziapathOP•7mo ago

I'll try to see if i can get a stacktrace

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soziapathOP•7mo ago

Not my decision sadly, company uses that and would probably break shit it we updated to a newer version

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soziapathOP•7mo ago

Honestly, I'm still pretty new to C# in general, never had the time to really understand all the ins and outs, since I had to jump straight into the project... Stack Trace seems to be pretty empty...

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soziapathOP•7mo ago

yeah, mostly external code it seems

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reflectronic•7mo ago

yes, the external code is what matters here

soziapathOP•7mo ago

message.txt

reflectronic•7mo ago

ok. well, nothing seems suspicious there it is possible to debug this further but i think it will be easier to try this: delete the reference to System.Private.ServiceModel instead, add a reference to

<PackageReference Include="System.ServiceModel.Primitives" Version="6.0.0" />

<PackageReference Include="System.ServiceModel.Primitives" Version="6.0.0" />

the newer version of the package is put together in a less unconventional way, so whatever is causing this issue might not have a chance to do the wrong thing

soziapathOP•7mo ago

Thanks a lot for the help! Will try that now... Still the same error

reflectronic•7mo ago

that System.Private.ServiceModel is not found? that does not make sense. it does not exist with the 6.0.0 version of the package

soziapathOP•7mo ago

It still seems to be part of the dependencies in the deps.json, I deleted the build folder, output folder, did a clean and a clean build, still seems to appear in the deps.json

reflectronic•7mo ago

it is definitely not part of mine. the word private doesn't show up anywhere

<BaseOutputPath>..\..\..\bin</BaseOutputPath>

just to be clear, the two build outputs do not go into the same folder, right

soziapathOP•7mo ago

they do go to the same folder

reflectronic•7mo ago

._. that is entirely wrong tht should never be done it would explain these inexplicable issues, because it just means one build will randomly overwrite the other based on which one happens first

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reflectronic•7mo ago

at the very least, it needs to be explained what it's for...

soziapathOP•7mo ago

honestly, i think nobdody really had any idea what they were doing. I just recently started working at the company and it's honestly baffling, even my private projects have better structure, testing, etc. But since I'm still pretty new to c#, .net, msbuild etc, I'm not really in for improving things, just wanna finish the current project and then maybe/hopefully have some time for general improvements.

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reflectronic•7mo ago

i guess, i just don't understand how this part is possible here is my project:

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

    <PropertyGroup>
        <TargetFramework>net8.0</TargetFramework>
        <OutputType>Exe</OutputType>
        <LangVersion>latest</LangVersion>
        <ImplicitUsings>enable</ImplicitUsings>
    </PropertyGroup>

    <ItemGroup>
      <PackageReference Include="Opc.UaFx.Advanced" Version="2.41.1" />
      <PackageReference Include="System.ServiceModel.Primitives" Version="6.0.0" />
    </ItemGroup>

</Project>

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

    <PropertyGroup>
        <TargetFramework>net8.0</TargetFramework>
        <OutputType>Exe</OutputType>
        <LangVersion>latest</LangVersion>
        <ImplicitUsings>enable</ImplicitUsings>
    </PropertyGroup>

    <ItemGroup>
      <PackageReference Include="Opc.UaFx.Advanced" Version="2.41.1" />
      <PackageReference Include="System.ServiceModel.Primitives" Version="6.0.0" />
    </ItemGroup>

</Project>

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reflectronic•7mo ago

and here is the only reference to System.ServiceModel in my deps.json:

    "System.ServiceModel.Primitives/6.0.0": {
      "type": "package",
      "serviceable": true,
      "sha512": "sha512-uGyB5FMdwiBmSgJtB0x9mWUuGYj/RbXjh8I6FtsZmUAVcFc6qjOasHPHnflHUk+Qqbx7cAFugDUa2HFRtDe1QA==",
      "path": "system.servicemodel.primitives/6.0.0",
      "hashPath": "system.servicemodel.primitives.6.0.0.nupkg.sha512"
    }

    "System.ServiceModel.Primitives/6.0.0": {
      "type": "package",
      "serviceable": true,
      "sha512": "sha512-uGyB5FMdwiBmSgJtB0x9mWUuGYj/RbXjh8I6FtsZmUAVcFc6qjOasHPHnflHUk+Qqbx7cAFugDUa2HFRtDe1QA==",
      "path": "system.servicemodel.primitives/6.0.0",
      "hashPath": "system.servicemodel.primitives.6.0.0.nupkg.sha512"
    }

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reflectronic•7mo ago

do you have System.ServiceModel.Primitives/6.0.0? if you do not have System.ServiceModel.Primitives/6.0.0, and you are sure you added the right package reference, then are you sure you are looking at the right deps.json file?

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