Could Not Create Ssl/Tls Secure Channel Vb.Net

When encountering the error “Could not create SSL/TLS secure channel” in VB.NET, it usually means that the SSL certificate used by the server cannot be validated or there is an issue with the TLS encryption protocol. This error commonly occurs when making HTTP requests to secure (HTTPS) endpoints. To resolve this error, you can try the following solutions:

1. Enable TLS 1.2:

   By default, .NET Framework uses older versions of TLS such as 1.0 or 1.1. However, many modern servers only support TLS 1.2 or higher. To enable TLS 1.2, you can add the following code before making the HTTP request:

   
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12


2. Ignore SSL/TLS certificate errors:

   If you trust the server and want to ignore any SSL/TLS certificate validation errors, you can use the following code:

   
ServicePointManager.ServerCertificateValidationCallback = Function(sender, certificate, chain, sslPolicyErrors) True


   This essentially skips the certificate validation step and allows the connection to be established regardless of any errors.

3. Specify certificate validation callback:

   If you need to perform custom certificate validation, you can specify a callback function to validate the SSL/TLS certificate. Here’s an example:

   
ServicePointManager.ServerCertificateValidationCallback = Function(sender, certificate, chain, sslPolicyErrors)
' Perform custom validation logic here
Return True ' Return True if certificate is considered valid, False otherwise
End Function


These solutions should help in resolving the “Could not create SSL/TLS secure channel” error in VB.NET. However, it’s important to note that ignoring certificate errors or disabling protocol versions can pose security risks, so use them with caution.