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

Question

我在 Visual Studio 2019 中創建了一個新的 ASP.NET Core MVC 項目，並選中了啟用 HTTPS 的選項。 當我使用 IIS Express 運行項目時，網頁顯示“連接已重置”。

當我第一次為項目啟用 SSL 並以調試模式啟動時，visual studio 提示我信任自簽名證書，我單擊是。 但是，在瀏覽器中，站點沒有打開，並且顯示錯誤“連接已重置”。

該應用程序在端口 44300 上運行。

這是 Windows 10 和 Visual Studio 2019 的全新安裝。

我驗證了 IIS 生成的自簽名證書存在於證書存儲中（請參閱屏幕截圖）。 此外，該證書也存在於 Edge Chromium 和 Google Chrome 瀏覽器的受信任根證書頒發機構中。

• 我創建了一個新項目以確保我的配置或構建文件中沒有任何錯誤。 當我運行新項目時，我得到相同的結果。

• 我也嘗試過其他瀏覽器，但仍然是同樣的錯誤。

• 我使用 Visual Studio 安裝程序修復了 Visual Studio，並將所有內容重置為默認值，但沒有成功。

請告知如何解決此問題。

以下是 Jexus 經理的報告：

SSL 診斷報告：

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.

結合診斷報告：

IMPORTANT: This report might contain confidential information. Mask such before sharing with others.
-----
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.

項目診斷報告：

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

原來是卡巴斯基雲安全最新更新阻止了本地主機的訪問。 我卸載了卡巴斯基，然后嘗試，它工作得很好。

我向卡巴斯基開了一張支持票，下面是他們的回復：

這是我們方面的一個已知錯誤問題，將隨着卡巴斯基 2021 版 MR2 的發布而修復。 MR2 計划於 11 月初發布。 我們建議在 MR2 發布之前使用 2020 版。

Answer 2

我只是在控制面板中卸載 IIS 10.0 Express，然后刪除 ASP.NET（在 vs 安裝程序中修改）並再次安裝 ASP.NET