title: ElasticSearch installation error with CLASSPATH
body: <p>I am getting the below mentioned error when i am trying to install elastic search version 6.6.0 on my windows 10 OS. The command i am using to install is </p>
  
  <p>-- Command:
  elasticsearch -Ecluster.name=TestES -Enode.name=First_Node</p>
  
  <p>-- Error:
  \Java\jre-9.0.4\bin\java.exe" -cp "!ES_CLASSPATH!" "org.elasticsearch.tools.launchers.TempDirectory""` was unexpected at this time.</p>
  
  <p>-- Java Version install on my pc:
  java version "9.0.4"
  Java(TM) SE Runtime Environment (build 9.0.4+11)
  Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode)</p>
  
  <p>Please guide how to fix this issue.</p>
  
  <p>Regards
  Qasim</p>