cant open pdf file ..it says....the adobe/acrobat reader that is running can not be used to view PDF files in a web browser. please exit adobe/acrobat reader and exit your web brouser and try again

-> [[Troubleshooting extensions and themes]] -> Clear Cookies & Cache * https://support.mozilla.com/en-US/kb/Template:clearCookiesCache -> [[How to clear the cache#w_clear-the-cache|Clear the Network Cache]] '''Plugins Updates''' Your Flash plugin is quite older. You need to update it. * Adobe Flash Player 11.0.1.152 (3.59 MB) * http://get.adobe.com/flashplayer/ Your Java plugin is quite older. You need to update it. * Java Version 6 Update 29 * http://java.com/en/download/index.jsp * [[Using the Java plugin with Firefox]] -> Update All your Firefox Plugins * https://www-dev.allizom.org/en-US/plugincheck/ * http://www.mozilla.com/en-US/plugincheck/ '''When Downloading Plugins Update setup files, Remove Checkmark from Downloading other Optional Softwares with your Plugins (e.g. Toolbars, McAfee, Google Chrome, etc.)''' Check and tell if its working.