281175 - Firefox prompt me to download .aspx file when accessing it through localhost (IIS)!

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[svdelle]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

I've installed ASP.NET and IIS. I can access a ASP.NET page (.aspx suffix) fine 
with Opera and IE, but not with Firefox.
Firefox displays the file-download-dialog to let me save the file to disk. In 
other words Firefox do not recognize ASP.NET applications ...

Reproducible: Always

Steps to Reproduce:
1. Type http://localhost/test.aspx
2. Press Enter
Actual Results:  
3. File download dialog appears, asking me to download test.aspx

Expected Results:  
Displayed the page!

I've been developing ASP.NET for some time now (so my setup works fine), and 
never had problems until using Firefox ...

Comment 1

[Christian Schmidt]

You ASP.NET application probably sends out some weird headers, e.g. a wrong
Content-Type header.

Try installing the LiveHTTPheaders extension in Firefox and see what headers it
sends:
http://livehttpheaders.mozdev.org/

Comment 2

[Matthias Versen [:Matti]]

>In other words Firefox do not recognize ASP.NET applications 

That is not only true for Firefox, it's also true for IE, Opera ...
They al get only the html output of your script (they never see asp).

Configure your server to send the correct mime-type and it should work.
Reopen this bug if you are sure that your server sends the correct mime type and
if you attach a packet trace (Ethreal) or a mozilla http log.

-> invalid (and never a blocker for our development)