The SAP Cloud Connector user interface is not available on default URL (https://localhost:8443), the browser shows an empty screen.
To get more details about connection establishment, activate SSL trace, see link
How to enable SSL trace in SAP Cloud Connector
In <drive>:\sap\scc20\log\ljs_trace.log look for the reason of the connection error, look for http-bio-<port number>-exec thread:
The "no cipher suites in common" message means that browser and SAP Cloud Connector could not agree in a common cipher suite during handshake.
Install the latest SAPJVM8.1 version see wiki page How to install a SAPJVM8.1 patch for SAP Cloud Connector.