Could you try uploading that image again? You can attach it to a reply to yourself: https://support.mozilla.org/questions/1078576#question-reply

I assume you are getting the Open/Save/Cancel dialog. Could you try this:

• Open Firefox's Browser Console (Ctrl+Shift+j)
• On the toolbar at the upper left, click Net twice to make sure all categories are displayed
• Then click Clear to weed out the noise
• Switch back to the browser and hit your download link, you can cancel the download
• Back in the console, click the URL of the download link to view the request and response headers: What Content-Type was sent by the server?

It is usually best to add a file extension to make Firefox recognize a file as a specific file type. Also make sure that the server is configured to send the correct content (MIME) type in case you use a non standard file extension.

• https://developer.mozilla.org/Properly_Configuring_Server_MIME_Types
• https://developer.mozilla.org/How_Mozilla_determines_MIME_Types

Image re-attached

Does Internet Explorer 8 show a full file name with an extension rather than just ICT? That may be helping it figure out what the content is. Firefox may truncate file names that contain actual spaces; you can replace spaces with %20 in your ASPX code.

But more importantly, the content type application/unknown is never going to match up with the correct download handerl. IE8 "sniffs" the beginning of a file to aid in recognition, and Firefox does not do that. So it's important to try to send a real content-type.

I started searching around for information on HP Records Manager and quickly realized it's over my head. However, you might be able to find the right resources/solution for this since you obviously have a big head start on me.

Thanks guys. I will have a chat to the HPRM administrator today to ask about the content MIME type. Itried to add the document type at the end but that failed as HPRM didn't recognise the extension.

I will let you know if I find a solution unless someone else there lets me know first :)

Not sure what I have done exactly but suddenly the links are working, but not for my co-workers????? It comes up with the same pop-up but I just hit enter and the document opens correctly...

Possibly you associated application/unknown with an application that works for the type of documents you tested?

You can use Live Http Headers to check the HTTP response headers.

• https://addons.mozilla.org/firefox/addon/live-http-headers/

Checked that. Its opening PDF and word docs now with no problem for me, just not anyone else it seems.

If you need a testbed you could...

Create a new Firefox profile

A new profile will have your system-installed plugins (e.g., Flash) and extensions (e.g., security suite toolbars), but no themes, other extensions, or other customizations. It also should have completely fresh settings databases and a fresh cache folder.

This will create a parallel savings folder and not disturb your main profile.

Exit Firefox and start up in the Profile Manager using Start > search box (or Run):

firefox.exe -P

Don't delete anything here!

Any time you want to switch profiles, exit Firefox and return to this dialog.

Click the Create Profile button, assign a name like TEST081815, and skip the option to relocate the profile folder. After creating the profile, select it and start Firefox in that profile.

Presumably this will be more similar to your users' configuration.

When returning to the Profile Manager, you might be tempted to use the Delete Profile button. But... it's a bit too easy to accidentally delete your "real" profile, so I recommend resisting the temptation. If you do want to clean up later, I suggest making a backup of all your profiles first in case something were to go wrong.