System.Security.Authentication.AuthenticationException: The remote certificate is not valid according to the verification process.

Haven't written a blog for a long time, today suddenly encountered a magical problem.

Good site on WIN10 and Windows Sever 2012 is not a problem, moved to Windows Sever 2003 on the emergence of such an error:

Server Error in '/' Application. The remote certificate is invalid according to the validation procedure.

Description: An unhandled exception occurred during, the execution of the current Web request. Review the stack trace for more information about the error and where it is originated in the code.

Exception Details: System.Security.Authentication.AuthenticationException:The Remote certificate is invalid according to the validation Procedure.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:  

[authenticationexception:the remote certificate is invalid according to the validation procedure.] System.Net.Security.SslState.StartSendAuthResetSignal (Protocoltoken message, Asyncprotocolrequest asyncrequest, Exception Exception) +1752731 System.Net.Security.SslState.CheckCompletionBeforeNextReceive (Protocoltoken message, Asyncprotocolrequest asyncrequest) +6079773 System.Net.Security.SslState.StartSendBlob (byte[] Incoming, Int32 count, Asyncprotocolrequest asyncrequest) +137 System.Net.Security.SslState.ProcessReceivedBlob (byte[] buffer, Int32 count, Asyncprotocolrequest asyncrequest) +53 System.Net.Security.SslState.StartReadFrame (byte[] buffer, Int32 readbytes, Asyncprotocolrequest asyncrequest) +120 System.Net.Security.SslState.StartReceiveBlob (byte[] buffer, Asyncprotocolrequest asyncrequest) +85 System.Net.Security.SslState.CheckCompletionBeforeNextReceive ( Protocoltoken message, asyncprotocolrequest asyncrequest) +61 System.Net.Security.SslState.StartSendBlob (BYte[] Incoming, Int32 count, Asyncprotocolrequest asyncrequest) +137 System.Net.Security.SslState.ProcessReceivedBlob (byte[] Buffer, Int32 count, Asyncprotocolrequest asyncrequest) +53 System.Net.Security.SslState.StartReadFrame (byte[ ] buffer, Int32 readbytes, asyncprotocolrequest asyncrequest) +120 System.Net.Security.SslState.StartReceiveBlob (Byte [] buffer, asyncprotocolrequest asyncrequest) +85 System.Net.Security.SslState.CheckCompletionBeforeNextReceive ( Protocoltoken message, asyncprotocolrequest asyncrequest) +61 System.Net.Security.SslState.StartSendBlob (byte[] Incoming, Int32 count, Asyncprotocolrequest asyncrequest) +137 System.Net.Security.SslState.ProcessReceivedBlob (Byte [] Buffer, Int32 count, Asyncprotocolrequest asyncrequest) +53 System.Net.Security.SslState.StartReadFrame (byte[] Buffer, Int32 readbytes, asyncprotocolrequest asyncrequest) +120 System.Net.Security.SslState.StartReceiveBlob (byte[ ] buffer, asyncprotocolrequest asyncrequest) +85 System.net.sEcurity. Sslstate.checkcompletionbeforenextreceive (Protocoltoken message, asyncprotocolrequest asyncrequest) +61 System.Net.Security.SslState.StartSendBlob (byte[] Incoming, Int32 count, Asyncprotocolrequest asyncrequest) +137 System.Net.Security.SslState.ProcessReceivedBlob (byte[] buffer, Int32 count, Asyncprotocolrequest asyncrequest) +53 System.Net.Security.SslState.StartReadFrame (byte[] buffer, Int32 readbytes, asyncprotocolrequest asyncrequest) +120 System.Net.Security.SslState.StartReceiveBlob (byte[] buffer, asyncprotocolrequest asyncrequest) +85 System.Net.Security.SslState.CheckCompletionBeforeNextReceive (Protocoltoken message, asyncprotocolrequest Asyncrequest) +61 System.Net.Security.SslState.StartSendBlob (byte[] Incoming, Int32 count, Asyncprotocolrequest Asyncrequest) +137 System.Net.Security.SslState.ProcessReceivedBlob (byte[] buffer, Int32 count, Asyncprotocolrequest Asyncrequest) +53 System.Net.Security.SslState.StartReadFrame (byte[] buffer, Int32 readbytes, Asyncprotocolrequest asyncrequest) +120 System.Net.Security.SslState.StartReceiveBlob (byte[] buffer, Asyncprotocolrequest asyncrequest) +85 System.Net.Security.SslState.CheckCompletionBeforeNextReceive ( Protocoltoken message, asyncprotocolrequest asyncrequest) +61 System.Net.Security.SslState.StartSendBlob (byte[] Incoming, Int32 count, Asyncprotocolrequest asyncrequest) +137 System.Net.Security.SslState.ForceAuthentication ( Boolean Receivefirst, byte[] buffer, asyncprotocolrequest asyncrequest) +143 System.Net.Security.SslState.ProcessAuthentication (Lazyasyncresult lazyresult) +99 System.Net.TlsStream.CallProcessAuthentication (Object State) +47 System.Threading.ExecutionContext.runTryCode ( Object userData) +80 System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup (TryCode code, CleanupCode Backoutcode, Object userData) +0 System.Threading.ExecutionContext.RunInternal (ExecutionContext ExecutionContext, ContextCallback callback, Object State) +105 System.Threading.ExecutionContext.Run (ExecutionContext ExecutionContext, ContextCallback callback, Object State, Boolean ignoresyncctx) +125 System.Threading.ExecutionContext.Run (ExecutionContext ExecutionContext, ContextCallback callback, Object State) +43 System.Net.TlsStream.ProcessAuthentication (lazyasyncresult result) +798 Sy Stem. Net.TlsStream.Write (byte[] buffer, Int32 offset, Int32 size) +58 System.Net.PooledStream.Write (byte[] buffer, Int32 offs ET, Int32 size) +26 System.Net.ConnectStream.WriteHeaders (Boolean async) +139[webexception:the underlying connection WA s closed:could not establish trust relationship for the SSL/TLS secure channel.] System.Net.HttpWebRequest.GetResponse () +6038659 Travel_Agency.server.WX_Enter.ProcessRequest (HttpContext context ) +1044 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute () +100 System.Web.HttpApplication.ExecuteStep (IExecutionStep step, boolean& completedsynchronously) +75

Presumably: The remote certificate is not valid according to the verification process. The underlying connection has been closed: failed to establish a trust relationship for the SSL/TLS secure channel

At the end of the process, the general handler is requested to add:

Servicepointmanager.servercertificatevalidationcallback = (sender, certificate, chain, sslpolicyerrors) = true;
Regardless of whether the certificate is valid, all passes. Temporarily fix the problem
This is a method on a static type, so you only need to add it once, but at the same time, this is the application Global certificate processing, if you want to do different certificate processing in different places, please note.

System.Security.Authentication.AuthenticationException: The remote certificate is not valid according to the verification process.