Files won't open automatically

If PDF files are downloaded instead of displayed, try these solutions

Reset download actions

1. Open your profile folder:At the top of the Firefox window, click on the Firefox button, go over to the Helpmenu and select Troubleshooting Information. The Troubleshooting Information tab will open.
2. Under the Application Basics section, click on Show Folder. A window with your profilefiles will open.
3. At the top of the Firefox window, click on the Firefox button and then select Exit
4. Delete the mimetypes.rdf file.

Check Application settings

If the PDF reader plugin comes bundled with a reader application, check the application plugin setting if there is some.

• Adobe Reader:
  1. Open Adobe Reader.
  2. Once in Adobe Reader, click the Edit menu in the menu bar, and then clickPreferences... The Preferences window will open.
  3. In the Categories section, click on Internet.
  4. Make sure the first check box, Display PDF in browser, is checked.
  5. Click OK to dismiss the Preferences window, and then close Adobe Reader.

If you still can't view a PDF in Firefox, continue with the next following instructions.

Re-initialize the plugins database

Follow the instructions in Re-initializing the plugins database.This will force Firefox to rebuild its plugin database. If you still can't view a PDF in Firefox, continue with the next following instructions.

Re-install the application

If the PDF reader plugin comes bundled with a reader application and the above troubleshooting methods for Firefox did not work, uninstall and re-install the application.

• Adobe Reader:
  1. See Adobe's instructions for uninstalling (Reader versions 8 and above). You should also uninstall any other versions of Reader that are installed.
  2. Install the latest version of Adobe Reader from Adobe's download page.

If you still can't view a PDF in Firefox, please refer the KB Doc : http://helpx.adobe.com/acrobat/kb/cant-view-pdf-web.html