Cannot download files over SSL in Internet Explorer - where is Cache-Control: no-cache header being set?

[Baljeet Nijjhar <baljeet.nijjhar@xxxxxxxxxxxxxx>]

Hi

I am having trouble downloading files over SSL in Internet Explorer. After some digging, I believe this is because a Cache-Control: no-cache HTTP header is being added by my Oracle Apache 2 HTTP proxy server to the responses sent from my application server. This causes the seemingly well-known problem described in: http://support.microsoft.com/kb/316431

My question is how to (temporarily at least) disable the adding of the Cache-Control header. I have tried the following to no avail:

a) Header unset Cache-Control in httpd.conf/ssl.conf

b) Header set Cache-Control <something else> - it sends Cache-Control: no-cache, <something else>

c) session.cache_limiter = none in php.ini - no change

d) creating a filter in my application server and setting the Cache-Control header there; I end up with two Cache-Control headers.

I have kept the default for the modules loaded but wonder if some module is required to be turned off.

Has anyone got any clues what else I can try? Or what is the answer to this problem?

thanks, Baljeet.