1726902 - PREPARE/INIT/USER_PASSWORD Error while trying to get initial context during upgrade or EHP installation

Disclaimer: Image/data in this KBA is from SAP internal systems, sample, data, or demo systems. Any resemblance to the real data is purely coincidental.

During Prepare phase of upgrade or EHP Installation, it ends with the below error:

The execution of PREPARE/INIT/USER_PASSWORDS ended in error.

Could not execute dialog UserPasswords. See previous messages.
Error while trying to validate Administrator password.
     Possible reason: the J2EE engine is not started.
     Error while trying to get initial context.
    
com.sap.engine.services.jndi.persistent.exceptions.NamingException: Exception during getInitialContext operation. No server is running. [Root exception is com.sap.engine.services.security.exceptions.BaseLoginException: Exception in creating new RemoteLoginContext instance.]
com.sap.engine.services.security.exceptions.BaseLoginException: Exception in creating new RemoteLoginContext instance.
com.sap.engine.services.rmi_p4.P4ConnectionException: Incorrect client ID. The stub is not connected yet.
Nested exception is: 
com.sap.engine.services.rmi_p4.P4ConnectionException: The stub cannot establish connection.

SAP NetWeaver Application Server for Java

sapjup ,sapehpi ,sum ,com.sap.engine.services.rmi_p4.P4ConnectionException ,getInitialContext , com.sap.engine.services.security.exceptions.BaseLoginException ,Exception in creating new RemoteLoginContext ,bindHost , Could not execute dialog UserPasswords , KBA , BC-JAS-ADM-ADM , Administration , BC-JAS-SEC , Security, User Management , BC-UPG-TLS-TLJ , Upgrade tools for Java , BC-EHP-INS-TLJ , EHP Installer deprecated. Please use BC-UPG-TLS-TLJ , Problem