Visual Studio 2019 - IIS Express - 连接已重置 (ERR_CONNECTION_RESET)

Question

我在 Visual Studio 2019 中创建了一个新的 ASP.NET Core MVC 项目，并选中了启用 HTTPS 的选项。 当我使用 IIS Express 运行项目时，网页显示“连接已重置”。

当我第一次为项目启用 SSL 并以调试模式启动时，visual studio 提示我信任自签名证书，我单击是。 但是，在浏览器中，站点没有打开，并且显示错误“连接已重置”。

该应用程序在端口 44300 上运行。

这是 Windows 10 和 Visual Studio 2019 的全新安装。

我验证了 IIS 生成的自签名证书存在于证书存储中（请参阅屏幕截图）。 此外，该证书也存在于 Edge Chromium 和 Google Chrome 浏览器的受信任根证书颁发机构中。

• 我创建了一个新项目以确保我的配置或构建文件中没有任何错误。 当我运行新项目时，我得到相同的结果。

• 我也尝试过其他浏览器，但仍然是同样的错误。

• 我使用 Visual Studio 安装程序修复了 Visual Studio，并将所有内容重置为默认值，但没有成功。

请告知如何解决此问题。

以下是 Jexus 经理的报告：

SSL 诊断报告：

IMPORTANT: This report might contain confidential information. Mask such before sharing with others.
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System Time: 10/19/2020 8:01:52 AM
Processor Architecture: AMD64
OS: Microsoft Windows NT 10.0.19041.0
Server Type: IIS Express

SERVER SSL PROTOCOLS

PCT 1.0: 
PCT 1.0 is not secure. OS default is used. You might explicitly disable it via registry.
SSL 2.0: 
SSL 2.0 is not secure. OS default is used. You might explicitly disable it via registry.
SSL 3.0: 
SSL 3.0 is not secure. OS default is used. You might explicitly disable it via registry.
TLS 1.0: 
TLS 1.0 is not secure. OS default is used. You might explicitly disable it via registry.
TLS 1.1: 
TLS 1.1 is not secure. OS default is used. You might explicitly disable it via registry.
TLS 1.2: 
SChannel EventLogging: 1 (hex)
To tune TLS related settings, please follow https://support.microsoft.com/en-us/kb/187498 or try out IIS Crypto from https://www.nartac.com/Products/IISCrypto/.
Microsoft documentation on cipher suites can be found at https://docs.microsoft.com/en-us/windows/desktop/secauthn/cipher-suites-in-schannel.
-----
[W3SVC/1]
ServerComment  : WebSite1
ServerAutoStart: True
ServerState    : Stopped

BINDING: http *:8080:localhost

[W3SVC/2]
ServerComment  : DemoApp
ServerAutoStart: True
ServerState    : Stopped

BINDING: http *:50682:localhost

BINDING: https *:44300:localhost
SSLCertHash: 33a6ad6b596b6d1d0a6dff64f69b9457383ff658
SSL Flags: None
Testing EndPoint: 127.0.0.1
#CertName: IIS Express Development Certificate
#Version: 3
#You have a private key that corresponds to this certificate.
#Signature Algorithm: sha256RSA
#Key Exchange Algorithm: RSA Key Size: 2048
This is not an ECC certificate, so *_ECDSA_* cipher suites cannot be used.
#Subject: CN=localhost
#Issuer: CN=localhost
#Validity: From 10/18/2020 8:39:54 AM To 10/18/2025 3:00:00 AM
#Serial Number: 167D0B2FB51D5BB54D222FDC298ACDE9
DS Mapper Usage: Disabled
Archived: False
#Key Usage: DataEncipherment, KeyEncipherment, DigitalSignature
#Enhanced Key Usage: Server Authentication (1.3.6.1.5.5.7.3.1)
#Subject Alternative Name: DNS Name=localhost
Certificate verified.

结合诊断报告：

IMPORTANT: This report might contain confidential information. Mask such before sharing with others.
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System Time: 10/19/2020 8:05:14 AM
Processor Architecture: AMD64
OS: Microsoft Windows NT 10.0.19041.0
Server Type: IIS Express
-----
This machine has 3 IP addresses to take external traffic.
* 172.23.176.1.
* 192.168.100.3.
* 172.25.112.1.
-----
[W3SVC/2]
ServerComment  : DemoApp
ServerAutoStart: True
ServerState: Stopped

BINDING: HTTP *:50682:localhost
No conflicting TCP reserved port range is found.
This site can take local traffic at 127.0.0.1:50682.
This site can take local traffic at [::1]:50682.
 * Web browsers should use URL http://localhost:50682. Requests must have a Host header of "localhost".
   Start DNS query for localhost.
   DNS Query returns 2 result(s).
    * [::1]
    * 127.0.0.1

BINDING: https *:44300:localhost
No conflicting TCP reserved port range is found.
This site can take local traffic at 127.0.0.1:44300.
This site can take local traffic at [::1]:44300.
 * Web browsers should use URL https://localhost:44300. Requests must have a Host header of "localhost".
   Start DNS query for localhost.
   DNS Query returns 2 result(s).
    * [::1]
    * 127.0.0.1
Binding Diagnostics does not verify certificates and other SSL/TLS related settings.
Please run SSL Diagnostics at the server level to analyze SSL/TLS configuration. More information can be found at https://docs.jexusmanager.com/tutorials/ssl-diagnostics.html.

项目诊断报告：

IMPORTANT: This report might contain confidential information. Mask such before sharing with others.
-----
Scan the folder C:\Users\ragha\source\repos\DemoApp\DemoApp for project files.
1 project(s) is detected.
* DemoApp.csproj


Project file: C:\Users\ragha\source\repos\DemoApp\DemoApp\DemoApp.csproj.
IIS Express configuration file: C:\Users\ragha\source\repos\DemoApp\.vs\DemoApp\config\applicationHost.config.
Analyze ASP.NET Core project.
Visual Studio launchSettings.json: C:\Users\ragha\source\repos\DemoApp\DemoApp\Properties\launchSettings.json.
Extract debugging profiles.
Found 2 profile(s).
* IIS Express
* DemoApp


Extract IIS settings.
sslPort is 44300.
application URL is http://localhost:50682.
Binding localhost on *:50682 (HTTP).
Binding localhost on *:44300 (HTTPS).
A matching binding is found for https://localhost:44300/.

Answer 1

原来是卡巴斯基云安全最新更新阻止了本地主机的访问。 我卸载了卡巴斯基，然后尝试，它工作得很好。

我向卡巴斯基开了一张支持票，下面是他们的回复：

这是我们方面的一个已知错误问题，将随着卡巴斯基 2021 版 MR2 的发布而修复。 MR2 计划于 11 月初发布。 我们建议在 MR2 发布之前使用 2020 版。

Answer 2

我只是在控制面板中卸载 IIS 10.0 Express，然后删除 ASP.NET（在 vs 安装程序中修改）并再次安装 ASP.NET