content-type if not provided is guessed by gluon/contenttype.py. 
for xslx is 
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'

If you need a different content-type, alter the default.py/download() 
function accordingly....

On Monday, August 26, 2013 2:13:58 PM UTC+2, Tim Richardson wrote:
>
> As a workaround, try saving the file as .xlsb and see what happens.
>
> On Monday, 26 August 2013 21:06:33 UTC+10, Andrew Buchan wrote:
>>
>>
>> I'm having a strange issue with a static file download. In the static 
>> folder I have a file with an xlsm extension, which I want users to be able 
>> to download via a hyperlink, which is created in the controller like so:
>>  
>> report_file_name = "DESIGN_SPEND_VS_ESTIMATE.xlsm"
>> ...
>> DIV(P(A('Download report: %s' % report_file_name,
>> _href=URL(r=request,c='static/downloads',f=report_file_name)))),
>> ...
>>  
>> This creates a download link which works fine in Google chrome, Fine in 
>> IE9, but not in IE8, where it tries to download the file with a .xlsx 
>> extension, which Excel cannot open, so it looks like I'm serving a corrupt 
>> file, which I'm not.
>>
>> I've read up on this and aside from the really useful advice of telling 
>> me not to use IE8 (the default browser in my client's, the only pointer I 
>> get is that it may be to do with MIME type sniffing in IE, and that I need 
>> to change .htaccess settings on the server, which is equally useless to me 
>> as I might not always be in control of the server. As it turns out, this 
>> app runs on rocket on Windows, and there's nothing in the rocket docs about 
>> mime types, and I don't know if setting a .htaccess would even work on 
>> Windows.
>>
>> Any thoughts?
>>
>

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