Symptoms:
How to get rid of HTTP send failed messages in sysmon log
It may appear that you have the following messages in the sysmon log:
Mar 19 11:12:22 -466602016#2: Send called
Mar 19 11:12:22 -466602016#2: ...sendRqstHeaders: start
Mar 19 11:12:22 -466602016#2: ...sendRqstHeaders: end
Mar 19 11:12:22 -466602016#2: ...sendPostData: start
Mar 19 11:12:22 -466602016#2: ...sendPostData: end
Mar 19 11:12:22 -466602016#2: ...getRespHeaders: start
Mar 19 11:12:22 -466602016#2: ...getRespHeaders: end
Mar 19 11:12:22 -466602016#2: Send complete
Mar 19 11:12:22 -466602016#1: HTTP send failed