Explanation of error “Security Error: 18” when using Internet Explorer and Neo4j Browser

When connecting to the Neo4j Browser http://localhost:7474 and using Internet Explorer 11, submission of cypher statements may result in error message

Security Error: 18

As the Neo4j Browser is using websockets to connect , for example ws://localhost, you would need to add ws:\\localhost\ to Internet Explorer configurations ( Internet Options / Security / Local Intranet / Sites / Advanced) and as depicted.


To access the Internet Explorer configuration click the gears icon in the upper right corner of the browser. ”’

  • Last Modified: 2020-09-23 21:26:58 UTC by Dana Canzano.
  • Relevant for Neo4j Versions: 3.2, 3.3.
  • Relevant keywords internet-explorer,browser.