hi there, recently i tried to set up iis with tomcat using isapi_redirect.dll. i followed the instructions given in the online documentation "Tomcat IIS HowTo" but it simply would not not work. the problem was that isapi_redirect.dll did not forward the originally requested uri to tomcat but instead always forwarded "/jakarta/isapi_redirect.dll" which always resulted in a 404 error. after searching in the mailing list for some hours, i found an article posted by Gasnier Lise which contained the solution to the problem: the HowTo says under "Configuring the ISAPI Redirector" in step 9: For PWS, you'll need to use regedit and add/edit the "Filter DLLs" key under HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\W3SVC\Parameters. This key contains a "," separated list of dlls ( full paths ) - you need to insert the full path to isapi_redirect.dll. this does not work! you have to specify the path to the directory that contains the dlls, not the full path to the dlls themselves. this solved the problem with isapi_redirect.dll not forwarding the requested uri to the ajp12 worker. please correct this in the HowTo as soon as possible. from the mailing list i can see that many people ran into this same problem than i did. yours, kai hudalla qi/rzs54 :: robert bosch gmbh :: +49 5121 492139 Harrisberger's Fourth Law of the Lab: Experience is directly proportional to the amount of equipment ruined.