Hi, Since I installed Norton Security 2008 on my machine at home, I cannot run JBoss until I switch of the firewall completely. I tried to open the UDP-ports 1200 until 1500, (because they seem to be used dynamically, at least they chang with each start) but it didn't help. 17:36:00,890 ERROR [UDP] exception=java.net.BindException: Cannot assign requested address: Datagram send failed, msg=[d | st: 228.1.2.3:45551, src: d530-a65fc15421:1458 (2 headers), size = 0 bytes], mcast_addr=228.1.2.3:45551 | Did anybody meet this problem and figured out how to solve it? Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4159597#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...