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When you click a PDF link on a web page, it can open either within the web browser or directly in Acrobat Reader or Foxit. Each browser has its own settings to control how PDF's open from a web page. Browsers such as Mozilla Firefox and Google Chrome offer a built-in PDF viewer that does not support XFA-based PDF forms. To view XFA-based PDF forms in these browsers, you must configure to open PDFs using Acrobat or Foxit. 

  1. On your computer, open Chrome.
  2. At the top right, click More Moreand thenSettings.
  3. At the bottom, click Advanced.
  4. Under "Privacy and security," click Content settings.
  5. Near the bottom, click PDF documents.

  6. Turn on Download PDF files instead of automatically opening them in Chrome.

Alternatively, you may complete following:

  1. On your computer, open Chrome.
  2. Type chrome://settings/content/pdfDocuments in the address bar.
  3. Turn on Download PDF files instead of automatically opening them in Chrome.

PDF documents will now open directly in Adobe Acrobat or Foxit.

  1. On your computer, open Firefox.
  2. At the top right, click open menu
  3. Select Preferences
  4. Scroll to Applications.
  5. In the Applications tab, type PDF in the search field. 

  6. For Portable Document Format (PDF) content type in the search result, select Use Adobe Acrobat (in Firefox) from the Action drop-down list. You may need to select Foxit if this application is installed on your computer instead of Adobe Acrobat.
  7. Restart Firefox.

PDF documents will now open directly in Adobe Acrobat or Foxit.

 Internet Explorer
  1. On your computer open Internet Explorer
  2. Select Tools > Manage Add-ons

  3. Under Add-on Types, select Toolbars And Extensions

  4. In the Show menu, select All Add-ons.

  5. In the list of add-ons, select Adobe PDF Reader. Note: If you do not see the Adobe PDF Reader add-on, try the other options on the menu. For example, on some systems, the add-on appears when you select Run Without Permission.

  6. Click the Enable or Disable button (it toggles depending on the status of the selected add-on):

    Enable sets the Adobe PDF Reader add-on to open PDFs in the browser.

    Disable turns off the add-on so it does not open PDFs in the browser.


  • In the Finder, select a PDF, and choose File > Get Info.

  • Click the arrow next to Open With to expose the product menu.

  • Choose either Adobe Acrobat or Adobe Reader from the application menu. 
    Choose Acrobat or Reader from the application menu.

  • Click the Change All button.
    Select Change All in the Open With panel.

  • When asked if you want to change all similar documents, click Continue.

You must have root user privileges to change the Safari plug-ins. To display PDFs using the Safari PDF viewer, you must disable the Adobe PDF Viewer.

  • Quit Safari.

  • Log in as the root user. The root user privileges aren't enabled by default because the root user can change system files. For more information and instructions, see one of the following Apple documents: Enabling and using the "root" user in Mac OS X or OS X Mountain Lion: Enable and disable the root user.

  • Choose Go > Go To Folder. 

  • Type /Library in the Go To The Folder field, and click Go. 

  • Create a new folder in the Library folder, and name it Internet Plug-ins Disabled.

  • Open the Internet Plug-ins folder, and move both the AdobePDFViewer.plugin and theAdobePDFViewerNPAPI.plugin into the new Internet Plug-ins Disabled folder. 


    If both AdobePDFViewer plug-ins are still in the Internet Plug-ins folder, drag them now to the trash. You may be asked for your name and password.

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