vb.net - 无法修复错误“无法加载 System.Net.Http，版本 = 4.2.0.0”
问题描述
在我的生产服务器上，我收到错误：
无法加载文件或程序集 'System.Net.Http, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' 或其依赖项之一。该系统找不到指定的文件。
在我的本地机器上它工作正常，但在服务器上它会抛出上述错误，所以某处必须有一个丢失的文件。请参阅更新 3，在其中我尝试添加丢失的 dll，然后引发不同的错误。
我按照这些链接中的说明进行操作：
- 未找到 System.Net.Http 4.2.0.0 的奇怪问题
- https://github.com/Azure/diagnostics-eventflow/issues/155
- https://github.com/dotnet/standard/issues/891
正如最后一个链接中所述，我在我还不想迁移的相同场景中（https://docs.microsoft.com/en-us/nuget/consume-packages/migrate-packages-config- to-package-reference )，因为我不想遇到不兼容问题，所以我首先要解决当前问题。
我已经查找了System.Net.Http（以及其他一些）的所有引用并手动更改了版本号，这是我的 .vbproj 文件中的旧代码块：
<Reference Include="System.Net.Http, Version=4.1.1.3, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Net.Http.4.3.4\lib\net46\System.Net.Http.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Runtime, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Runtime.4.3.0\lib\net462\System.Runtime.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Runtime.Serialization" />
<Reference Include="System.Security.Cryptography.Algorithms, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.Algorithms.4.3.0\lib\net463\System.Security.Cryptography.Algorithms.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.Encoding, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.Encoding.4.3.0\lib\net46\System.Security.Cryptography.Encoding.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.Primitives, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.Primitives.4.3.0\lib\net46\System.Security.Cryptography.Primitives.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.X509Certificates, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.X509Certificates.4.3.0\lib\net461\System.Security.Cryptography.X509Certificates.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
这是我的最新.vbproj文件：
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props" Condition="Exists('packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" />
<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProductVersion>
</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{6455BF17-B42E-4854-96B1-D4D0E7767B0C}</ProjectGuid>
<ProjectTypeGuids>{349c5851-65df-11da-9384-00065b846f21};{F184B08F-C81C-45F6-A57F-5ABD9991F28F}</ProjectTypeGuids>
<OutputType>Library</OutputType>
<RootNamespace>MyProject</RootNamespace>
<AssemblyName>MyProject</AssemblyName>
<TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
<OptionExplicit>On</OptionExplicit>
<OptionCompare>Binary</OptionCompare>
<OptionStrict>Off</OptionStrict>
<OptionInfer>On</OptionInfer>
<MvcBuildViews>false</MvcBuildViews>
<UseIISExpress>true</UseIISExpress>
<Use64BitIISExpress />
<IISExpressSSLPort>44316</IISExpressSSLPort>
<IISExpressAnonymousAuthentication />
<IISExpressWindowsAuthentication />
<IISExpressUseClassicPipelineMode />
<UseGlobalApplicationHostFile />
<NuGetPackageImportStamp>
</NuGetPackageImportStamp>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<DefineDebug>true</DefineDebug>
<DefineTrace>true</DefineTrace>
<OutputPath>bin\</OutputPath>
<DocumentationFile>MyProject.xml</DocumentationFile>
<NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>pdbonly</DebugType>
<DefineDebug>false</DefineDebug>
<DefineTrace>true</DefineTrace>
<Optimize>true</Optimize>
<OutputPath>bin\</OutputPath>
<DocumentationFile>MyProject.xml</DocumentationFile>
<NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
</PropertyGroup>
<ItemGroup>
<Reference Include="AjaxControlToolkit, Version=16.1.1.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\AjaxControlToolkit.dll</HintPath>
</Reference>
<Reference Include="aspnetforum, Version=7.2.7.0, Culture=neutral, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\aspnetforum.dll</HintPath>
</Reference>
<Reference Include="Hammock, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c148cfba29ed1a4d, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\Hammock.dll</HintPath>
</Reference>
<Reference Include="Hammock.ClientProfile, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c148cfba29ed1a4d, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\Hammock.ClientProfile.dll</HintPath>
</Reference>
<Reference Include="HtmlAgilityPack, Version=1.7.1.0, Culture=neutral, PublicKeyToken=bd319b19eaf3b43a, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\HtmlAgilityPack.dll</HintPath>
</Reference>
<Reference Include="Microsoft.AspNet.FriendlyUrls, Version=1.0.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\Microsoft.AspNet.FriendlyUrls.dll</HintPath>
</Reference>
<Reference Include="Mollie, Version=2.0.2.0, Culture=neutral, processorArchitecture=MSIL">
<HintPath>packages\Mollie.Net.2.0.2\lib\netstandard2.0\Mollie.dll</HintPath>
</Reference>
<Reference Include="Mollie.Api, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\Mollie.Api.dll</HintPath>
</Reference>
<Reference Include="MySql.Data, Version=6.6.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\MySql.Data.dll</HintPath>
</Reference>
<Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
<HintPath>packages\Newtonsoft.Json.12.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
</Reference>
<Reference Include="PresentationCore" />
<Reference Include="PresentationFramework" />
<Reference Include="skmValidators, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\skmValidators.dll</HintPath>
</Reference>
<Reference Include="System" />
<Reference Include="System.ComponentModel.Composition" />
<Reference Include="System.Data" />
<Reference Include="System.Drawing" />
<Reference Include="System.IO, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.IO.4.3.0\lib\net462\System.IO.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Net.Http, Version=4.3.4, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Net.Http.4.3.4\lib\net46\System.Net.Http.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Runtime, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Runtime.4.3.0\lib\net462\System.Runtime.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Runtime.Serialization" />
<Reference Include="System.Security.Cryptography.Algorithms, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.Algorithms.4.3.0\lib\net463\System.Security.Cryptography.Algorithms.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.Encoding, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.Encoding.4.3.0\lib\net46\System.Security.Cryptography.Encoding.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.Primitives, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.Primitives.4.3.0\lib\net46\System.Security.Cryptography.Primitives.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.X509Certificates, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>packages\System.Security.Cryptography.X509Certificates.4.3.0\lib\net461\System.Security.Cryptography.X509Certificates.dll</HintPath>
<Private>True</Private>
<Private>True</Private>
</Reference>
<Reference Include="System.Core" />
<Reference Include="System.Web" />
<Reference Include="System.Web.Services" />
<Reference Include="System.EnterpriseServices" />
<Reference Include="System.Net.Http.WebRequest">
</Reference>
<Reference Include="System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<Private>True</Private>
<HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.Helpers.dll</HintPath>
</Reference>
<Reference Include="System.Web.Mvc, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<Private>True</Private>
<HintPath>packages\Microsoft.AspNet.Mvc.5.2.7\lib\net45\System.Web.Mvc.dll</HintPath>
</Reference>
<Reference Include="System.Web.Optimization">
<HintPath>packages\Microsoft.AspNet.Web.Optimization.1.1.3\lib\net40\System.Web.Optimization.dll</HintPath>
</Reference>
<Reference Include="System.Web.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<Private>True</Private>
<HintPath>packages\Microsoft.AspNet.Razor.3.2.7\lib\net45\System.Web.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<Private>True</Private>
<HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.WebPages.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Deployment, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<Private>True</Private>
<HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.WebPages.Deployment.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<Private>True</Private>
<HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.WebPages.Razor.dll</HintPath>
</Reference>
<Reference Include="TweetSharp, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c148cfba29ed1a4d, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\TweetSharp.dll</HintPath>
</Reference>
<Reference Include="WebGrease">
<Private>True</Private>
<HintPath>packages\WebGrease.1.6.0\lib\WebGrease.dll</HintPath>
</Reference>
<Reference Include="Antlr3.Runtime">
<Private>True</Private>
<HintPath>packages\Antlr.3.5.0.2\lib\Antlr3.Runtime.dll</HintPath>
</Reference>
<Reference Include="WindowsBase" />
</ItemGroup>
<ItemGroup>
<Reference Include="Newtonsoft.Json">
<HintPath>packages\Newtonsoft.Json.11.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
</Reference>
<Reference Include="System.Net.Http.Formatting">
<HintPath>packages\Microsoft.AspNet.WebApi.Client.5.2.7\lib\net45\System.Net.Http.Formatting.dll</HintPath>
</Reference>
<Reference Include="System.Web.Http">
<HintPath>packages\Microsoft.AspNet.WebApi.Core.5.2.7\lib\net45\System.Web.Http.dll</HintPath>
</Reference>
<Reference Include="System.Web.Http.WebHost">
<HintPath>packages\Microsoft.AspNet.WebApi.WebHost.5.2.7\lib\net45\System.Web.Http.WebHost.dll</HintPath>
</Reference>
<Reference Include="Microsoft.CodeDom.Providers.DotNetCompilerPlatform">
<HintPath>packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\lib\net45\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.dll</HintPath>
</Reference>
</ItemGroup>
<ItemGroup>
<Import Include="System" />
<Import Include="System.Collections" />
<Import Include="System.Collections.Generic" />
<Import Include="System.Data" />
<Import Include="System.Linq" />
<Import Include="System.Xml.Linq" />
<Import Include="System.Diagnostics" />
<Import Include="System.Collections.Specialized" />
<Import Include="System.Configuration" />
<Import Include="System.Text" />
<Import Include="System.Text.RegularExpressions" />
<Import Include="System.Web" />
<Import Include="System.Web.Caching" />
<Import Include="System.Web.Mvc" />
<Import Include="System.Web.Mvc.Ajax" />
<Import Include="System.Web.Mvc.Html" />
<Import Include="System.Web.Routing" />
<Import Include="System.Web.SessionState" />
<Import Include="System.Web.Security" />
<Import Include="System.Web.Profile" />
<Import Include="System.Web.UI" />
<Import Include="System.Web.UI.WebControls" />
<Import Include="System.Web.UI.WebControls.WebParts" />
<Import Include="System.Web.UI.HtmlControls" />
</ItemGroup>
<ItemGroup>
<Folder Include="App_Data\" />
<Folder Include="App_WebReferences\" />
<Folder Include="Models\" />
</ItemGroup>
<PropertyGroup>
<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
<VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
</PropertyGroup>
<Import Project="$(MSBuildBinPath)\Microsoft.VisualBasic.targets" />
<Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
<Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" Condition="false" />
<Target Name="MvcBuildViews" AfterTargets="AfterBuild" Condition="'$(MvcBuildViews)'=='true'">
<AspNetCompiler VirtualPath="temp" PhysicalPath="$(WebProjectOutputDir)" />
</Target>
<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
</PropertyGroup>
<Error Condition="!Exists('packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props'))" />
</Target>
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.
<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target> -->
</Project>
我的 packages.config
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Antlr" version="3.5.0.2" targetFramework="net472" />
<package id="bootstrap" version="3.4.1" targetFramework="net472" />
<package id="jQuery" version="3.3.1" targetFramework="net472" />
<package id="jQuery.Validation" version="1.17.0" targetFramework="net472" />
<package id="Microsoft.AspNet.Mvc" version="5.2.7" targetFramework="net472" />
<package id="Microsoft.AspNet.Razor" version="3.2.7" targetFramework="net472" />
<package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net472" />
<package id="Microsoft.AspNet.WebApi" version="5.2.7" targetFramework="net472" />
<package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" targetFramework="net472" />
<package id="Microsoft.AspNet.WebApi.Core" version="5.2.7" targetFramework="net472" />
<package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.7" targetFramework="net472" />
<package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net472" />
<package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.0" targetFramework="net472" />
<package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.11" targetFramework="net472" />
<package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net472" />
<package id="Modernizr" version="2.8.3" targetFramework="net472" />
<package id="Mollie.Net" version="2.0.2" targetFramework="net472" />
<package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
<package id="System.IO" version="4.3.0" targetFramework="net472" />
<package id="System.Net.Http" version="4.3.4" targetFramework="net472" />
<package id="System.Runtime" version="4.3.0" targetFramework="net472" />
<package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net472" />
<package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net472" />
<package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net472" />
<package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net472" />
<package id="WebGrease" version="1.6.0" targetFramework="net472" />
</packages>
我还在我的 web.config 中注释掉了整个<runtime>部分（包含 assemblyBindings）。
仍然，错误仍然存在，我还能做什么？
更新 1
根据@welotty 的回答，我做了以下事情：
我fuslogvw从 VS2019 开发人员命令提示符运行，但我只看到并清空窗口（没有应用程序）：
我看不到在哪里可以选择要分析的目录或我的特定应用程序的任何其他设置。
更新 2
根据@welotty 的评论，我得fuslogvw跑了。我清除了所有消息，在 Visual Studio 2019 中构建了我的应用程序，现在看到了这个（没有提到System.Net.Http）：
我打开了System.IO日志，我在日志下面得到了这个，但也没有提到System.Net.Http）
*** Assembly Binder Log Entry (24-Aug-2019 @ 4:47:53 PM) ***
The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe
--- A detailed error log follows.
=== Pre-bind state information ===
LOG: DisplayName = System.IO
(Partial)
WRN: Partial binding information was supplied for an assembly:
WRN: Assembly Name: System.IO | Domain ID: 1
WRN: A partial bind occurs when only part of the assembly display name is provided.
WRN: This might result in the binder loading an incorrect assembly.
WRN: It is recommended to provide a fully specified textual identity for the assembly,
WRN: that consists of the simple name, version, culture, and public key token.
WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue.
LOG: Appbase = file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = MSBuild.exe
Calling assembly : Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe.Config
LOG: Using host configuration file:
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO.DLL.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO/System.IO.DLL.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO.EXE.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO/System.IO.EXE.
LOG: All probing URLs attempted and failed.
*** Assembly Binder Log Entry (24-Aug-2019 @ 4:47:53 PM) ***
The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.
首先：我将如何解决这些问题？日志指出The system cannot find the file specified，其次：我认为这与我的实际问题无关？
更新 3
我注意到我的生产服务器上System.Net.Http.dll的文件夹实际上缺少它。bin所以我从本地机器上复制了 dll。但是，然后我收到错误：
无法加载要执行的参考程序集。
我在这里检查过，但这对于像将新 dll 添加到 bin 文件夹这样简单的事情来说似乎非常复杂。不确定是否重要，但我的产品服务器没有文件夹：C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.7.2。
为什么我会收到此错误？
解决方案
我知道这是旧的，但我今天遇到了一个 .net 4.8 项目。我能够追踪到这个问题，对我来说，我正在通过 Swashbuckle 使用 Swagger。它使用需要 System.Net.Http v4.0.0.0 的 WebActivatorEx，绑定将其重定向到最新版本 4.2.0.0，所以这是我的修复。在我的 web.config 中。请注意，newVersion 不是最新版本，而是 WebActivator Ex 使用和要求的版本。
<dependentAssembly>
<assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.0.0.0" />
</dependentAssembly>
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