question Re: Newly Built NIFI Cluster starts but has error in Support Questions https://community.cloudera.com/t5/Support-Questions/Newly-Built-NIFI-Cluster-starts-but-has-error/m-p/338928#M232973 <P>Found out all of my ports were not open</P> Fri, 18 Mar 2022 16:19:23 GMT Tra 2022-03-18T16:19:23Z Newly Built NIFI Cluster starts but has error https://community.cloudera.com/t5/Support-Questions/Newly-Built-NIFI-Cluster-starts-but-has-error/m-p/338927#M232972 <P>Version 1.15.3</P><P>Windows Server 2019 Standard</P><P>&nbsp;</P><P>After GUI login receive the following error:</P><P>&nbsp;</P><DIV class="message-pane-title"><STRONG>Invalid State</STRONG></DIV><DIV class="message-pane-content">The Flow Controller is initializing the Data Flow.</DIV> Fri, 18 Mar 2022 13:42:15 GMT https://community.cloudera.com/t5/Support-Questions/Newly-Built-NIFI-Cluster-starts-but-has-error/m-p/338927#M232972 Tra 2022-03-18T13:42:15Z Re: Newly Built NIFI Cluster starts but has error https://community.cloudera.com/t5/Support-Questions/Newly-Built-NIFI-Cluster-starts-but-has-error/m-p/338928#M232973 <P>Found out all of my ports were not open</P> Fri, 18 Mar 2022 16:19:23 GMT https://community.cloudera.com/t5/Support-Questions/Newly-Built-NIFI-Cluster-starts-but-has-error/m-p/338928#M232973 Tra 2022-03-18T16:19:23Z