Windup on windows cannot start RMI server

!ENTRY org.jboss.tools.windup.runtime 4 0 2017-05-04 04:58:06.597
!MESSAGE Error while attempting to retrieve the ExecutionBuilder from RMI registry.
!STACK 0
java.rmi.ConnectException: Connection refused to host: 10.0.2.15; nested exception is: 
	java.net.ConnectException: Connection refused: connect
	at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
	at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
	at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
	at sun.rmi.server.UnicastRef.newCall(Unknown Source)
	at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
	at org.jboss.tools.windup.runtime.WindupRmiClient.getExecutionBuilder(WindupRmiClient.java:164)
	at org.jboss.tools.windup.runtime.WindupRmiClient.updateWindupServer(WindupRmiClient.java:136)
	at org.jboss.tools.windup.ui.util.WindupLauncher$4$1.isDone(WindupLauncher.java:155)
	at org.jboss.tools.windup.ui.util.FutureUtils.waitForFuture(FutureUtils.java:82)
	at org.jboss.tools.windup.ui.util.WindupLauncher$4.doRun(WindupLauncher.java:170)
	at org.jboss.tools.windup.ui.util.FutureUtils$AbstractDelegatingMonitorJob.run(FutureUtils.java:112)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: java.net.ConnectException: Connection refused: connect
	at java.net.DualStackPlainSocketImpl.connect0(Native Method)
	at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
	at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
	at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
	at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
	at java.net.PlainSocketImpl.connect(Unknown Source)
	at java.net.SocksSocketImpl.connect(Unknown Source)
	at java.net.Socket.connect(Unknown Source)
	at java.net.Socket.connect(Unknown Source)
	at java.net.Socket.<init>(Unknown Source)
	at java.net.Socket.<init>(Unknown Source)
	at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source)
	at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source)
	... 12 more