In Neo4j 3.0 and its implementation of the Bolt protocol, if a remote browser connects to Neo4j (http://<remote_neo4j_host>:7474) and attempts to authenticate, the following error may be encountered:
[red]#WebSocket connection failure.
Due to security constraints in your web browser, the reason for the failure is not available to this Neo4j Driver.
Please use your browsers development console to determine the root cause of the failure.
Common reasons include the database being unavailable, using the wrong connection URL or temporary network problems.
If you have enabled encryption, ensure your browser is configured to trust the certificate Neo4j is configured to use.
WebSocket readyState is: 3#
This error can be resolved by editing the file
$NEO4J_HOME/conf/neo4j.conf and uncommenting:
# To have Bolt accept non-local connections, uncomment this line: dbms.connector.bolt.address=0.0.0.0:7687