Available in: 79 languages [14] Type: Web browser Feed reader Mobile web browser: License: MPL 2.0 [15] [16] Website: mozilla.org /firefox: Standard(s) HTML5, CSS3. My., and I don't want to say advice, but my course of action would be to back up the machine and ensure any and all data/settings, bookmarks and files are safe. Perhaps installing adobe has cancelled the default setting for opening pdf files, leaving no program set. When you click on the download icon in Firefox. So we couldn't open.pdf in the browser in our SP2010 site. I set the setting to permissive browser file handling in central admin. I then found out that there's a.
Adobe Won't Open in IE. When attempting to view PDF (Portable Document Format) files in Internet Explorer 7 and 8, the Web browser may display a red 'X,' a blank page. Using WIN 7 64bit. Up graded to IE 11 fro IE 9. Now pdf. files will not display. Don't have a clue. Have the same problem on another older computer that I use for.