Although this is a very late reply! Hopefully it will help the visitors here.
Unable to access HUB
Port 4242 is not being utilized
Repository Trace System Log:
System.Repository.Repository.QRSMain 10 cd4e6bf8-b263-4fd7-89fc-75792637da34 Fatal exception Duplicate or invalid root certificates are not allowed; see logs at Qlik.Sense.Communication.Security.CertSetup.ThrowAndLogFatalRootError(String msg)↵↓ ................
Removed the Duplicate Certificates from MMC for Both Current User and Local computer .
As soon as we restart the Services , Qlik Creates a new certificate and updates the repository