Earlier versions of IE were known to sometimes disregard the Content-Type (which you set correctly to application/pdf) and look at the suffix of the URL instead. For instance, they would render HTML if you served a .html as text/plain, etc. You may try creating URLs that end with .pdf Separately, you're not sending a Content-Length header: HTTP request sent, awaiting response... HTTP/1.1 200 OK Server: Apache-Coyote/1.1 Pragma: No-cache Cache-Control: no-cache Expires: Wed, 31 Dec 1969 19:00:00 EST Content-Type: application/pdf Date: Mon, 29 Aug 2011 19:47:27 GMT Connection: close Length: unspecified [application/pdf] which disregards RFC 2616, http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13 On Mon, Aug 29, 2011 at 3:30 PM, Eric Lease Morgan <[log in to unmask]> wrote: > I need some technical support when it comes to Internet Explorer (IE) and > PDF files. > > Here at Notre Dame we have deposited a number of PDF files in a Fedora > repository. Some of these PDF files are available at the following URLs: > > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:1000793/PDF1 > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:832898/PDF1 > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:999332/PDF1 > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:832657/PDF1 > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:1001919/PDF1 > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:832818/PDF1 > * > http://fedoraprod.library.nd.edu:8080/fedora/get/CATHOLLIC-PAMPHLET:834207/PDF1 > > Retrieving the URLs with any browser other than IE works just fine. > > Unfortunately IE's behavior is weird. The first time someone tries to load > one of these URL nothing happens. When someone tries to load another one, it > loads just fine. When they re-try the first one, it loads. We are banging > our heads against the wall here at Catholic Pamphlet Central. Networking > issue? Port issue? IE PDF plug-in? Invalid HTTP headers? On-campus versus > off-campus issue? > > Could some of y'all try to load some of the URLs with IE and tell me your > experience? Other suggestions would be greatly appreciated as well. > > -- > Eric Lease Morgan > University of Notre Dame > > (574) 631-8604 >