Question

I’m developing c# application to call Exchange Management Shell Cmdlets. It always comes out with an exception of “The server certificate on the destination computer (208.243.XX.2XX:443) has the following errors:
The SSL certificate is signed by an unknown certificate authority.
The SSL certificate contains a common name (CN) that does not match the hostname. “

But I did write code to accept all certificate, don’t know why still get the error.

My code:

    PSCredential credential = new PSCredential("administrator", securePwd);

    WSManConnectionInfo connectionInfo = new WSManConnectionInfo(new Uri("https://208.243.49.20/powershell"), "http://schemas.microsoft.com/powershell/Microsoft.Exchange", credential);
    connectionInfo.AuthenticationMechanism = AuthenticationMechanism.Basic;

    Runspace runspace = System.Management.Automation.Runspaces.RunspaceFactory.CreateRunspace(connectionInfo);
    PowerShell powershell = PowerShell.Create();
    PSCommand command = new PSCommand();
    command.AddCommand("New-Mailbox");
    command.AddParameter("Name", "TestName");
    powershell.Commands = command;
    ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(
    delegate { return true; }
);
    try
    {
        runspace.Open();//This is where the exception happens
        powershell.Runspace = runspace;
        Collection<PSObject> result= powershell.Invoke();
    }

Answer 1

WSManConnectionInfo object has two properties to skip certificate checks.

connectionInfo.SkipCACheck = true;

connectionInfo.SkipCNCheck = true;