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I have an form on a server running IIS 7.5 that allows the user to attach multiple files. However I receive an error when trying to attach .docx, .pptx, and .xlsx files.

I have verified the correct MIME types are set on the server. ie:

.docx - application/openxmlformats-officedocument.wordprocessingml.document

There are no errors appearing in the event viewer or the IIS logs, but I did find one in HTTPERR:

HTTP/1.1 POST /BLA/Primary/inc_attachFile.asp 400 25 BadRequest BLA
HTTP/1.1 POST /BLA/Primary/inc_attachFile.asp 400 25 Connection_Dropped BLA 

The odd thing is that i can successfully attach a .docx while in IE on the server itself, but when I try on a workstation I get the error. I've tried adding additional rights to several accounts on the folder but it made no difference.

Any help would be greatly appreciated.

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What's the error? –  Shane Madden Aug 11 '11 at 18:32
1  
"It is very nice that you have an error. Perhaps if we can have the error (or a description of it) we can help you to reach enlightenment." Sal Dali, the Server Fault Llama. –  voretaq7 Aug 11 '11 at 18:45
    
Thanks Sal, So there are no errors appearing in the event viewer or IIS log but I did find one in HTTPERR: HTTP/1.1 POST /BLA/Primary/inc_attachFile.asp 400 25 BadRequest BLA and HTTP/1.1 POST /BLA/Primary/inc_attachFile.asp 400 25 Connection_Dropped BLA The odd thing is that i can successfully attach a .docx while in IE on the server itself, but when I try on a workstation is get the error. I've tried adding additional rights to several accounts on the folder but it made no difference. Thanks, Steve –  Steve R Aug 12 '11 at 16:03
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