IE Errors On File Download Through .ashx File With Caching Turned Off?

Feb 1, 2011

I have a simple 'file download' generic handler which sets the response contenttype and headers before sending the file through the same response.

I also have Response.Cache.SetCacheability(HttpCacheability.server) set in the global.asax.

As I have noticed from various sources, Internet Explorer doesn't like this no-cache setting and gives an error when trying to download the file (requested site unavailable or cannot be found).

I thought maybe I could override this setting in the .ashx page, so I alter the response's cacheability setting to public. This did not solve the issue. removing the line from global.asax does solve the problem but obviously affects the whole site.

Is there a way of setting the cachability just for my generic handler?

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