The HTTP cookie used to manage the synchronization session is not recognized. All HTTP requests for the same session must go to the same MobiLink server instance. The most likely cause is an HTTP intermediary not sending all HTTP requests for the same session to the same MobiLink server. This error can also occur when a server is quickly shut down and restarted between HTTP requests for the same session.

• MobiLink client network protocol options
• -x mlsrv12 option