Connection Establishment response type 6 size 140 version 2.2 - The configServer failed to communicate with the QRadar Console. An exception was caught. Check the server's log files for details.. java.security.cert.CertificateException: No subject alternative names matching IP address x.x.x.x found
To solve the issue you can try to create a CA certificate and put the info related to the SAN with the IP address:
‘IP Address=’