C# 浏览器标题中的IIS502.5错误-.NET核心应用程序无法执行-可疑SDK映射问题

我无法从

VisualStudio

运行我的应用程序

体验：浏览器出现几秒钟后关闭。接近前，浏览器将标题显示为“IIS502.5错误”。我怀疑

.netcore

运行时或SDK问题

我的应用程序

*.csproj

具有以下属性

<TargetFramework>netcoreapp2.1</TargetFramework>

命令

dotnet--info

显示以下信息

Microsoft Windows [Version 10.0.18362.592]
(c) 2019 Microsoft Corporation. All rights reserved.


C:\Users\blackpanter\dotnet --info
.NET Core SDK (reflecting any global.json):
Version:   3.0.100
Commit:    04339c3a26

Runtime Environment:
OS Name:     Windows
OS Version:  10.0.18362
OS Platform: Windows
RID:         win10-x64
Base Path:   C:\Program Files\dotnet\sdk\3.0.100\

Host (useful for support):
Version: 3.1.1
Commit:  a1388f194c

.NET Core SDKs installed:
2.1.300 [C:\Program Files\dotnet\sdk]
2.1.509 [C:\Program Files\dotnet\sdk]
2.1.607 [C:\Program Files\dotnet\sdk]
2.1.803 [C:\Program Files\dotnet\sdk]
2.2.110 [C:\Program Files\dotnet\sdk]
2.2.207 [C:\Program Files\dotnet\sdk]
3.0.100 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

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

故障排除

  IMPORTANT: This report might contain confidential information. Mask such 
  before sharing to others.
  -----
  System Time: 1/17/2020 6:23:43 PM
  Processor Architecture: AMD64
  OS: Microsoft Windows NT 10.0.18362.0
  Server Type: IIS Express

ASP.NET核心模块未作为IIS的一部分安装。有关更多详细信息，请参阅

因此，我已经从安装了托管包

---

但运气不佳：（

运行一些诊断以排除常见问题，故障排除后更新了问题。安装ASP.NET Core模块后，您可以重新运行诊断。您能告诉我您的visual studio的哪个版本吗？您是否尝试使用visual studio安装程序安装ASP.NET Core？

  IMPORTANT: This report might contain confidential information. Mask such 
  before sharing to others.
  -----
  System Time: 1/17/2020 6:23:43 PM
  Processor Architecture: AMD64
  OS: Microsoft Windows NT 10.0.18362.0
  Server Type: IIS Express