XmlDocument.Load(url) url is an SSL error when https is remote

Little scum · Posted on 6/21/2019 10:28:22 PM

XmlDocument.Load(url) error "Underlying connection is closed: Failed to establish a trust relationship for the SSL/TLS secure channel." "According to the verification process, the remote certificate is invalid."

XmlDocument.Load(url) does not report an error when the url is a local file or http, but an error is reported when it is https remote. Basic connection is closed: Failed to establish a trust relationship for the SSL/TLS secure channel. "According to the verification process, the remote certificate is invalid."

The reason is that because there is no certificate, the certificate is invalid, and the workaround is as follows:

1. Add three references: using System.Net; using System.Net.Security; using System.Security.Cryptography.X509Certificates;

2. Add the following two methods, SetCertificatePolicy, and the RemoteCertificateValidate event

Login is visible.

Using the above scheme does not work。。。。。

Login is visible.

Tried the above code, but it didn't work。。。。。。。

Final Solution:

Upgrade the project to .NET 4.5.1 and right-click on the properties to modify. After the program starts, add the following code:

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Resources:

Request aborted: Failed to create an SSL/TLS secure channel solution
https://www.itsvse.com/thread-7612-1-1.html
(Source: Architect_Programmer)

[WinForm] XmlDocument.Load(url) url is an SSL error when https is remote

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