Hi all, When i run *ping.cpp * at .\boost_1_53_0\doc\html\boost_asio\example\icmp, it comes with the error message: "Exception: open: An attempt was made to access a socket in a way forbidden by its access permissions". Debug shows that it comes from calling ",* socket_ (io_service , icmp::v4() )*" in the constructor. Google says the running computer must have administrator right, i do have it. i also checked my firewall settings, it looks fine to me also. Does anyone can give a help? Thanks, -shunguang -- View this message in context: http://boost.2283326.n4.nabble.com/ICMP-Ping-example-running-problem-tp46514... Sent from the Boost - Users mailing list archive at Nabble.com.