Fear not, you are not alone! After applying WebSphere Application Server V6.0.1.29 fix pack, your WebSphere MQ JMS applications begin failing with error MQJMS2013. Here is an example of the MQJMS2013 error: javax.jms.JMSSecurityException: MQJMS2013: invalid security authentication supplied for MQQueueManager at com.ibm.mq.jms.MQConnection.createQM(MQConnection.java:2532) at com.ibm.mq.jms.MQConnection.createQMXA(MQConnection.java:1892) at com.ibm.mq.jms.MQQueueConnection.<init>(MQQueueConnection.java:105) at... [More]

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