We are running IIS 5.0 (port 80) - there are multiple websites running) and tomcat (port 8080). We have no problem in getting the isapi_redirect.dll to load (green arrow). http://localhost:8080/examples/ works fine, but http://localhost/examples/ gives a Server Application Error. The entries in the isapi.log files are : [jk_isapi_plugin.c (408)]: HttpFilterProc started [jk_isapi_plugin.c (429)]: In HttpFilterProc test redirection of /examples/ [jk_uri_worker_map.c (345)]: Into jk_uri_worker_map_t::map_uri_to_worker [jk_uri_worker_map.c (407)]: jk_uri_worker_map_t::map_uri_to_worker, Found a match ajp12 [jk_isapi_plugin.c (439)]: HttpFilterProc [/examples/] is a servlet url - should redirect to ajp12 [jk_isapi_plugin.c (461)]: HttpFilterProc check if [/examples/] is points to the web-inf directory It's as though it is running fine as a filter but stops before it can execute HttpExtensionProc. Please advise how we correct this. Thanks Rory