1571274 - Cannot connect to server using message server ms://

• You are unable to logon to the Process Integration (PI) Enterprise Services Repository (ESR) or Integration Builder Directory.
• You get the error Cannot connect to server using message server: ms://<server name>:

In the Stacktrace section you see entries like below:

• Cannot connect to server using message server: ms://<server name>:51004/P4 (SERVER_MS_NOT_AVAILABLE)
  MESSAGE ID: com.sap.aii.ib.core.ejbutil.rb_all.SERVER_MS_NOT_AVAILABLE
  STACKTRACE:
  com.sap.aii.utilxi.misc.api.ReconnectRuntimeException: Cannot connect to server using message server: ms://<server name>:51004/P4
• Caused by: com.sap.engine.services.jndi.persistent.exceptions.NamingException: Exception while trying to get InitialContext.
• Caused by: java.io.IOException: Can't get Socket. Reason:Malformed reply from SOCKS server
• Caused by: java.io.IOException: Can't get Socket. Reason:Connection timed out:
• Caused by: com.sap.engine.interfaces.cross.DestinationException: cannot establish connection with any of the available instances:
  com.sap.engine.services.rmi_p4.P4IOException: Cannot open connection to host:

• SAP NetWeaver Process Integration 7.1
• SAP enhancement package 1 for SAP NetWeaver Process Integration 7.1
• SAP NetWeaver 7.3
• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5

Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.4, PI 7.4, PO 7.4, Process Orchestration 7.5, PI 7.5, PO 7.5, XI, AEX, JRE. JDK, Problem When Logging On, XI, Integration Directory, cluster, login , KBA , BC-XI-IBD , Integration Builder - Design , BC-XI-IBC , Integration Builder - Configuration , BC-XI-IBF , Framework , Problem