Hi I have solved the problem temporarily by compromising as below. I have followed the same guide. But only the cahage is instead of creating the registry entry. I have created a text file with name isapi_redirect.properties and placed in bin folder. Used 32bit isapi_redirect-1.2.28.dll. The environment is as below: Windows 2003 Enterprise Edition(64bit) IIS 7 (64bit) but isapi_redirect.dll is 32bit Started working. But still I want to use my application completely with 64bit environment, if I use 64bit dll it is not working. Can some one help me if there are any additional steps to be done. Thanks & Regards, RamkumarMP View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4260771#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...