https://community.cloudera.com/t5/Support-Questions/Not-able-to-access-NiFi-web-UI/m-p/106398#M69276 <P>yesterday, I have installed Apache NiFi in my Linux Server root directory as per in the administration guide and its started and worked fine till yesterday but it is not working today. The error in web UI is "The connection was reset" but in my Linux status it shows Nifi running.</P> Sat, 28 May 2016 15:07:31 GMT iyappan 2016-05-28T15:07:31Z