There is not way to force Windows to reserve ports for an application that I know of. The ports are allocated on a first come, first served basis. If you are running a program (or service) that uses, for example, port 1099, then you have one of several choices. First, don't run that program. Second, change that program to use a different port. Third, change JBoss to use a different port. About once a month at work, my required corporate version of Norton Anti-Virus insists on opening port 1099 (it randomly selects an open port, usually I am lucky and it selects something other than 1099). I have complained to the corporate network administrators, asking for a way to tell Norton not to use that port. So far my requests have fallen on deaf ears. So when it happens, I reboot and Norton grabs a different port. (Option one above is not an option for me because i have no control over Norton. And option three above is not an option for me since I am constantly reinstalling and running various versions of JBoss.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3995366#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...