On Windows,
logging off when WebSphere Message Broker components (a
broker, the Configuration Manager, or the User Name Server)
are active can cause a problem. You might see messages, including BIP2070, BIP2642, BIP1102,
and BIP1103 in the Windows Event
log if this is the case.
When you log off, any queue managers that support these WebSphere Message Broker components are stopped unless they are defined to run as Windows services. The components all run as Windows services and remain active, but they find that the queue manager and queue manager objects that are associated with them are no longer available.