title: change user under which Tomcat is running
body: <p>i am using Apache tomcat 7 on windows 8.<br>
  i tried to change user under which Tomcat is running (<a href="https://superuser.com/questions/301864/run-tomcat-service-as-different-user-on-windows-7">https://superuser.com/questions/301864/run-tomcat-service-as-different-user-on-windows-7</a>)
  my computer->manage->services->Apache tomcat->Log on and i added my username and password.<br>
  but when i tried to run tomcat,i got this error:<br>
  Error 1069:The service did not start due a log on failure.what should i do ?<br>
  <strong><em>how to know the right username and password?</em></strong></p>