Most likely you need to run the windows service under an account that is allowed access to the queue _____ From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of nuaafantasy nuaafantasy Sent: 11 September 2007 10:07 To: Boost-users@lists.boost.org Subject: [Boost-users] a question about message_queue Dear All: My project use messge_queue to communicate between two processes. When I used the processes as normal process,it runs well. but It seems that the client process can't access the message queue if I set the server process as a windows services. can you help me about this? is this a problem about privilege? but message_queue do not have a option to set privileges. looking forward to your help!