MSMQ independent clients can send messages to public queues while disconnected from the network. The disconnect can be a brief interruption in a network server or the mobile use of a laptop or portable computer.
MSMQ supports disconnected messaging automatically, without additional application design or network configuration. However, you cannot install MSMQ independent clients while the PSC is disconnected because MSMQ Setup must have access to the MQIS on the PSC.