If AMQMSRVN is running under the local user account MUSR_MQADMIN (or another local user account), you can change the password for the account as follows:
If AMQMSRVN is running under a domain user account, you can also change the password for the account as follows:
The user account that AMQMSRVN runs under executes any MQSC commands that are issued by user interface applications, or performed automatically on system startup, shutdown, or service recovery. This user account must therefore have WebSphere MQ administration rights. By default it is added to the local mqm group on the server. If this membership is removed, the IBM MQSeries service will not work.
If a security problem arises with the DCOM configuration or with the user account that AMQMSRVN runs under, error messages and descriptions appear in the system event log. One common error is for a user not to have access or launch rights to the server. This error appears in the system log as a DCOM error with the following message description:
Access denied attempting to launch a DCOM server. The server is: {55B99860-F95E-11d1-ABB6-0004ACF79B59}
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