使用XMS.NET通过证书SSL连接IBM MQ时遭遇2059(MQRC_Q_MGR_NOT_AVAILABLE)错误的求助

大家好，我最近在做一个.NET应用，需要用IBM.XMS（XMS.NET）客户端通过SSL连接IBM MQ队列管理器。我已经把客户端证书（.crt文件）导入到Windows证书存储的受信任的根证书颁发机构里了，但不管怎么试，一直碰到这个错误：

MQException: 2059 - MQRC_Q_MGR_NOT_AVAILABLE

我把自己的代码贴出来，麻烦各位帮忙看看哪里可能出问题了：

using IBM.XMS;
using System;

class Program
{
    static void Main()
    {
        try
        {
            Console.WriteLine("Setting environment variable MQSSLKEYR...");
            // Environment.SetEnvironmentVariable("MQSSLKEYR", @"C:\Users\ShivamK\Desktop\Dev\AA_Certificates\dev\dev\keystore"); // Without extension
            Console.WriteLine("Creating XMS Factory...");

            XMSFactoryFactory factoryFactory = XMSFactoryFactory.GetInstance(XMSC.CT_WMQ);
            IConnectionFactory connectionFactory = factoryFactory.CreateConnectionFactory();

            // Connection properties
            connectionFactory.SetStringProperty(XMSC.WMQ_HOST_NAME, "xxx.xx.com");
            connectionFactory.SetIntProperty(XMSC.WMQ_PORT, 1444);
            connectionFactory.SetStringProperty(XMSC.WMQ_CHANNEL, "ABCD.01");
            connectionFactory.SetIntProperty(XMSC.WMQ_CONNECTION_MODE, XMSC.WMQ_CM_CLIENT);
            connectionFactory.SetStringProperty(XMSC.WMQ_QUEUE_MANAGER, "EMMMQQ");

            // SSL
            connectionFactory.SetStringProperty(XMSC.WMQ_SSL_CIPHER_SPEC, "TLS_RSA_WITH_AES_128_CBC_SHA256");

            // Auth
            connectionFactory.SetStringProperty(XMSC.USERID, "S10147878");
            connectionFactory.SetStringProperty(XMSC.PASSWORD, "B7hkhkjk");

            Console.WriteLine("Creating Connection...");
            using IConnection connection = connectionFactory.CreateConnection();
            using ISession session = connection.CreateSession(false, AcknowledgeMode.AutoAcknowledge);

            IDestination destination = session.CreateQueue("queue:///CGOOPSHDLG.XYZ.OPSDATA.01");
            using IMessageConsumer consumer = session.CreateConsumer(destination);

            connection.Start();
            Console.WriteLine("Waiting for a message...");
            IMessage message = consumer.Receive(10000); // wait for 10s

            if (message is ITextMessage textMessage)
                Console.WriteLine($"Received message: {textMessage.Text}");
            else
                Console.WriteLine("No message received or message not text.");

            connection.Stop();
        }
        catch (XMSException ex)
        {
            Console.WriteLine("XMS Exception: " + ex.Message);
            if (ex.LinkedException != null)
                Console.WriteLine("Linked Exception: " + ex.LinkedException.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine("General Exception: " + ex.Message);
        }
    }
}

我自己排查过的点：

• 确认了主机名、端口、通道名称、队列管理器名称这些配置都是和MQ管理员给的一致的
• 尝试过开启/关闭MQSSLKEYR环境变量的设置（路径指向的是没有后缀的keystore文件）
• 证书确实已经导入到Windows的受信任根证书存储里了

有没有大佬能指点一下，这个2059错误到底是哪里出问题了？是不是SSL证书的配置还有什么遗漏的地方？

内容来源于stack exchange