Help with PDF Multiple Versions of Adobe Acrobat or Reader Having multiple versions of Adobe Reader installed on the same system can cause plug-in conflicts. Remove all previous versions of Adobe Reader. Download and Install the latest version of Adobe Reader. Microsoft Edge Microsoft Edge has a built-in PDF viewer enabled by default, which opens the file directly in your browser window. To disable the built-in viewer, enter edge://settings/content/pdfDocuments?search=pdf in the address bar and enable "Always open PDF files externally". Google Chrome Browser Google Chrome has a built-in PDF viewer enabled by default, which opens the file directly in your browser window. To disable the built-in viewer, enter chrome://settings/content/pdfDocuments?search=pdf in the address bar and enable "Download PDFs". Mozilla Firefox Browser Mozilla Firefox has a built-in PDF viewer. Instructions for disabling the PDF viewer can be found at https://support.mozilla.org/en-US/kb/view-pdf-files-firefox-or-choose-another-viewer#w_disable-the-built-in-pdf-viewer-and-use-another-viewer. Other Solutions Disable Display PDF in Browser and Fast Web View Close all browsers. Open Adobe Reader. Choose Edit>Preferences>Internet. In the ‘Web Browser Options’ section, uncheck ‘Display PDF in browser’ and uncheck ‘Allow Fast Web View’. Click ‘OK’ to confirm the change. Download and Install the latest version of Adobe Reader. Mobile Devices Mobile devices do not support XFA-based PDF forms. XFA-based PDF forms allow users to fill-in and save PDF forms locally. Please use your desktop/laptop to download the file directly to your local drive and open the file using Adobe Reader. Edit Content