A while ago I was presented with a seemingly trival and strange issue. The issue stated something like, a user was able to download a .pptx file from a domino website and when opened it is always blank, were as other users were able to download the .pptx file and view its contents with out issues. I thought to my self, am I an astrologer and have I sinned enough to be tested with such an issue that if I would like to get serious about it, I might laugh my self to de***.
Yes it was funny, and I did all sorts of checking like is the user trying to preview the file on lotus notes which I knew would fail or does the user's machine really have Microsoft office installed and many such tests came back negative. I knew I am approaching/at the verge of the dangerous scenario - "Laughing myself to de***", i.e. get serious.
Know what?, I did really found something serious. Once again I am humbly reminded that one can never know everything.
It is a kind of a well known bug which was well documented as well. A rare phenominan with IBM lol. :P
It helped me find something that I was looking for a long time, a list of all the commonly used mime type. Wonderful:O..
The abstract of what I understood from the documentation is as follows
In some cases, the browser identifies the attachment as a zip file.
Symptom : The user may be prompted to download the file locally, even though the file type is associated with the correct application in their browser.
Cause : This issue occurs because the MIME types for Microsoft Office 2007 formats are not listed in the Web Server metabase on the Domino server (httpd.cnf).
Currently, when a HTTP request is made for an unknown file type, the server returns a Content-Type of "application/octet-stream" in the response, instead of the appropriate Office 2007 MIME type.
Resolving the problem
This issue is now fixed in Lotus Notes and Domino 8.5.1 FP4 and 8.5.2.
Fix details: SPR# JBEN7WRHM7
Refer to the Upgrade Central site for details on upgrading Notes/Domino.
To resolve the issue in a previous release, IBM recommends performing the following actions to add the Office 2007 MIME types to your current Web Server metabase (httpd.cnf):
1) Shutdown the HTTP process by issuing the following command on the Domino server console: tell http quit
2) Open the httpd.cnf file (located in the Domino Data directory) using a text editor, such as Notepad. In order to edit this type of file on most operating systems, it will be necessary to launch the editor first and then open using the file menu from within the editor.
3) Copy the Office 2007 MIME types below and paste them into the httpd.cnf file (Note: When inserted, each line below should begin with either the hash symbol "#" or "AddType")
# Microsoft Office 2007 formats
AddType .docx application/vnd.openxmlformats-officedocument.wordprocessingml.document
AddType .dotx application/vnd.openxmlformats-officedocument.wordprocessingml.template
AddType .xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
AddType .xltx application/vnd.openxmlformats-officedocument.spreadsheetml.template
AddType .pptx application/vnd.openxmlformats-officedocument.presentationml.presentation
AddType .potx application/vnd.openxmlformats-officedocument.presentationml.template
AddType .ppsx application/vnd.openxmlformats-officedocument.presentationml.slideshow
Note: The above list only includes the most commonly used Office 2007 MIME types. For a complete list of the document types addressed by SPR # JBEN7WRHM7 (including other extensions that may be needed in your environment), please refer to the following Microsoft documentation:
4) Restart the HTTP task by issuing the following command on the Domino server console: load http