We have a lot of Excel, Word and PDF files on our intranet site for all the employees to download. For some users who have Windows XP Prof and IE 8, they can't open .doc or .xls file types but they are able to open PDF files. It works fine in Chrome. When the file download - security warning pops up, they are not able to open or save. If I try to open, it's blank and if I try to save, I get an error. Also, the file extension is not .doc, it shows as _doc (see image). I read the below post but still it keeps doing the same thing.
Why won't IE8 won't open ".XLS" file from server?