Question

我已经将项目迁移到asp.net core 3.1，但是当我部署到Azure Web应用程序时，它无法启动。

显示错误

HTTP错误500.31-ANCM无法找到常见的本地依赖项解决此问题的方法：指定的版本找不到Microsoft.NetCore.App或Microsoft.AspNetCore.App。故障排除步骤：检查系统事件日志中是否有错误消息启用记录应用程序进程的标准输出消息的步骤调试程序并检查应用程序

  <EventData>
            <Data>Could not find 'aspnetcorev2_inprocess.dll'. Exception message:
Invalid runtimeconfig.json [D:\home\site\wwwroot\Flymark.Online.Web.runtimeconfig.json] [D:\home\site\wwwroot\Flymark.Online.Web.runtimeconfig.dev.json]
</Data>
            <Data>Process Id: 23260.</Data>
            <Data>File Version: 13.1.20074.3. Description: IIS ASP.NET Core Module V2. Commit: e81033e094d4663ffd227bb4aed30b76b0631e6d</Data>
        </EventData>

OR

    <EventData>
            <Data>Could not find 'aspnetcorev2_inprocess.dll'. Exception message:
Failed to load the dll from [D:\home\site\wwwroot\hostpolicy.dll], HRESULT: 0x8007007E
An error occurred while loading required library hostpolicy.dll from [D:\home\site\wwwroot\]
</Data>
            <Data>Process Id: 21176.</Data>
            <Data>File Version: 13.1.20074.3. Description: IIS ASP.NET Core Module V2. Commit: e81033e094d4663ffd227bb4aed30b76b0631e6d</Data>
        </EventData>

我正在使用build.yml在azure dev ops中构建我的应用程序

steps:
  - task: UseDotNet@2
    inputs:
      packageType: 'sdk'
      version: '3.1.x'

  - task: DotNetCoreCLI@2
    displayName: Restore
    inputs:
      command: restore
      projects: '**/*.csproj'
      vstsFeed: 'a8d40e20-5070-473a-8928-33122e7035b7'


  - script: dotnet tool install --global dotnet-ef 
    displayName: 'dotnet install ef'
    workingDirectory: Source

  - script: dotnet publish -c Release -r win-x64 --self-contained 
    displayName: 'dotnet publish web'
    workingDirectory: Source/Web

  - script: dotnet ef migrations script --idempotent --project Online.Db --startup-project web -o $(Build.ArtifactStagingDirectory)/Online.Db.sql
    displayName: 'Prepare sql scripts'
    workingDirectory: Source

  - task: ArchiveFiles@2
    inputs:
      rootFolderOrFile: 'Source/Web/bin/Release/netcoreapp3.1/win-x64/publish' 
      includeRootFolder: false 
      archiveType: 'zip'
      archiveFile: '$(Build.ArtifactStagingDirectory)/Web.zip' 
      replaceExistingArchive: false 

  - task: PublishBuildArtifacts@1
    displayName: 'Publish Artifact: Release'
    inputs:
      PathtoPublish: '$(build.artifactstagingdirectory)'

      ArtifactName: Release

    condition: succeededOrFailed()

在azure dotnet上--info返回

.NET Core SDK (reflecting any global.json):
 Version:   3.1.103
 Commit:    6f74c4a1dd

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.14393
 OS Platform: Windows
 RID:         win10-x86
 Base Path:   D:\Program Files (x86)\dotnet\sdk\3.1.103\

Host (useful for support):
  Version: 3.1.3
  Commit:  4a9f85e9f8

.NET Core SDKs installed:
  1.1.14 [D:\Program Files (x86)\dotnet\sdk]
  2.1.513 [D:\Program Files (x86)\dotnet\sdk]
  2.2.109 [D:\Program Files (x86)\dotnet\sdk]
  3.1.103 [D:\Program Files (x86)\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.14 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.17 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.8 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.14 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.17 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.8 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.1 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.3 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.0 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.3 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 1.0.16 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.13 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.9 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.17 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.8 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.3 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.3 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

我认为问题是点点滴滴，因为dotnet信息返回win10-x86，但是当我创建新的核心应用程序并从Visual Studio进行部署时，效果很好。

Answer 1

这太疯狂了。.花了一周的时间，我进行了web.config转换并将其更改为stdoutLogFile=".\logs\stdout"之后，问题终于变成stdoutLogFile="\\?\%home%\LogFiles\stdout"

Answer 2

因此 Azure 中的 ANCM 错误似乎从未真正对应于 ANCM 消息。例如，如果它抱怨缺少依赖项，则可能是因为在 Startup.cs 中抛出了未处理的异常。是的。

查看“真实”错误的最快方法是尝试从 Kudu 运行应用程序（Azure 应用程序 -> 开发工具部分 -> 高级工具 -> “Go”，使用浏览器终端运行 {{1 }} 只需输入其路径并按回车键即可）。解决 ANCM 错误后，您将收到“app 在 localhost:5000 上启动”或类似的信息。否则，它会显示一个堆栈跟踪，告诉您确切的问题所在。

Asp.net Core 3.1-Azure应用服务上的InProcess HTTP错误500.31-ANCM无法找到本机依赖项

2 个答案: