https://community.appian.com/discussions/f/administration/1773/hi-while-installing-appian-7-3-we-are-facing-some-issues-plz-if-anHI While installing Appian 7.3 we are facing some issues. Plz. if anybody could help. Exception in thread &quot;main&quot; java.lang.NoClassDefFoundError: 7/3/ear Caused by: java.lang.ClassNotFoundException: 7.3.ear at java.net.URLClassLoader$1.run(URLClassLoaderen-USTelligent Community 12https://community.appian.com/thread/6349?ContentTypeID=1Mon, 23 Dec 2013 09:36:39 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:59c6feb5-c9dd-405d-854b-60dd1edec8f8sunnyayes patty I have defined both the fields in the files<div style="clear:both;"></div>https://community.appian.com/thread/6329?ContentTypeID=1Fri, 20 Dec 2013 18:16:57 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:86fcb016-1056-4068-ba2e-182499418198Patty IseckeHow have you defined the following properties:<br />APPIAN_HOME_EAR=&quot;C:/&lt;APPIAN_HOME&gt;/ear&quot; in standalone.conf<br />and <br />set &quot;APPIAN_HOME_EAR=C:/&lt;APPIAN_HOME&gt;/ear&quot; in standalone.conf.bat<div style="clear:both;"></div>https://community.appian.com/thread/6314?ContentTypeID=1Fri, 20 Dec 2013 14:40:24 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:2b10dd4b-ad17-4d92-b69c-a74013cce0ddsunnyayes while executing the jboss 6.1 I am facing this issue. when I am running standalone.bat its throwing the above error.<div style="clear:both;"></div>https://community.appian.com/thread/6313?ContentTypeID=1Fri, 20 Dec 2013 14:26:12 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:47d2b297-1399-4d0c-afdb-527300bfd6ecvimalkumarsHi,<br />Could you confirm at what stage you are getting this error?<div style="clear:both;"></div>