Search for service=SecurityService and click on it to open the selection.
Find the section named void resetMasterAdminUser() and click Invoke.
Additional Information
VoyenceControl 4.0 system management console login: The default username is smc-user with a password of sysadmin.
VoyenceControl 3.6 system management console login: The default username is voyence with a password of sysadmin.
jmx-console 3.6 login: The default username for the jmx-console is admin, and the password is set at install time.
jmx-console 4.x login: The default username for the jmx-console is jmx-user, and the password is set at install time.