Big Business Client works with Sleep settings on your computer to connect again to Big Business Server on waking . This is handy, except when Server is not to be found.
If Server was shut off, or if you switched networks, or it has been too long in Sleep mode, Client may not connect again and try to Quit. Or, it may need you to End Task.
In the Task Manager, click once to select Big Business Client and then click End Task. To open the Task Manager right-click on the Windows taskbar and choose from menu.