When I try to open attachments with .xlsx file extensions, Firefox identifies as a Firefox HTML document and the "open file" window does not show Excel as an option - when I try to Browse to Excel the window does not open to "my programs" where I might be able be able to designate the correct association. (it shows "Program Data" and "Program files" but these don't work to make the association. The file will save ok but, I want to be able to open them as I can easily do in IE. Is the only solution to give up on Firefox and go back to IE?
The following steps should resolve this:
See my screenshot for an illustration of the change.
Please let me know if that doesn't help for any reason.
I found and deleted the mimeTypes.rdf file and closed and reopened Firefox, and then tried opening the attached file, but again it thinks it is a Firefox HTML document and does not give Excel as a choice for programs to open it (shows graphics type programs that can open HTML's) any of those shown just open a page of garbage text and symbols. As I mentioned I do not see that the Browse tab takes me to an Excel choice.
When I get to the content type window, there is no reference to Excel or .xlsx or anything similar, so I cannot change anything in the Action choice..
You will have to make sure to add the correct file extension when saving the file if Firefox doesn't do this automatically.
I'm not saving these files - in this case it is the Society of Automotive Engineers that is saving the files. And remember that the same files open with no problem in IE.