Same problem as Bug 56299 https://issues.apache.org/bugzilla/show_bug.cgi?id=56299, but with mod_proxy_connect module. error.log: 014] [mpm_winnt:notice] [pid 9300:tid 468] AH00354: Child: Starting 64 worker threads. [Wed Sep 10 12:58:30.443062 2014] [proxy_connect:notice] [pid 9300:tid 984] [client 127.0.0.1:55543] AH01026: err/hup on backconn [Wed Sep 10 13:04:28.835732 2014] [proxy_connect:notice] [pid 9300:tid 976] [client 127.0.0.1:55622] AH01026: err/hup on backconn [Wed Sep 10 13:26:32.320732 2014] [proxy_connect:notice] [pid 9300:tid 960] [client 127.0.0.1:55810] AH01026: err/hup on backconn [Wed Sep 10 13:26:49.155232 2014] [proxy_connect:notice] [pid 9300:tid 976] [client 127.0.0.1:55814] AH01026: err/hup on backconn [Wed Sep 10 13:28:08.935732 2014] [proxy_connect:notice] [pid 9300:tid 968] [client 127.0.0.1:55839] AH01026: err/hup on backconn [Wed Sep 10 13:28:23.123732 2014] [proxy_connect:notice] [pid 9300:tid 960] [client 127.0.0.1:55837] AH01026: err/hup on backconn [Wed Sep 10 14:23:47.926731 2014] [proxy_connect:notice] [pid 9300:tid 976] [client 127.0.0.1:56238] AH01026: err/hup on backconn
*** This bug has been marked as a duplicate of bug 57168 ***