Firefox wont open pdf files must download it

 · Firefox just did an update and now I can't view pdf files. I'm only given the option to save the file. Normally, these file open in Acrobat I tried doing a repair on Acrobat but that didn't help. I tried changing to reader and that didn't work either. I'm out of ideas. I'm hoping someone here can suggest something. All Topics Topic Computers Technology Software Browsers Firefox» Firefox won't open pdf. RickJ Posts: 7, I had a similar issue when I updated Acrobat Pro and found I had to reinstall the reader for it to redo the file assocs. Give it a go. Boy my brain must be fried!! FF needs Reader, FF needs Reader, FF needs Reader, FF needs.  · Well, originally I didn't have any problems while using FoxIt and that's why I "associated" the opening of PDF files with it. But I started not being able to download and open PDF files on several sites I knew something was wrong. I also use an IE tab in Firefox and could open those files by using the IE tab which is essentially the IE browser.

As said in my title, Firefox is no longer opening any of my pdf files. I've got it set to 'always ask' for when it opens (I tried to set it to FF, but it just wouldn't accept it, I'd select FF and then it just won't do anything, just shows 'always ask' as if I never changed it) Using Version Have tried disabling add ons, didn't help. Industry's most powerful PDF reader. View, annotate, form fill, and sign PDF across desktop, mobile, and web - no matter if you're at the office, home, or on the go. Download Now. Download enterprise packaging. If you are using Firefox, you also need to add an ff-ActiveX-host plug-in to make the web browser open the Excel file. So, if your Google Chrome won't open Excel file, you can use Microsoft chromium-based Edge or Internet Explorer to read and edit the Excel file in the native application.

PDF is the acronym of Portable Document Format, which is a file format developed by Adobe in the s. PDF files are mainly used to present documents including images and text information. The modern web browsers like Google Chrome, Mozilla Firefox, and Internet Explorer can easily open PDFs; besides, Acrobat Reader DC and Acrobat DC are two. PDF Documents Won't Download. When I click on a PDF document, the web site opens up a new tab and puts the PDF in the new tab. From there, I can scroll the PDF and zoom in and out of the PDF. However, Download or View in Preview icons (located bottom center of the page) nothing happens. The file does not download, nor will it open in preview. How to Enable Firefox's Built-In Viewer to Open PDF Files. In case that you've turned off the PDF or it's not enabled, you can always go switch it on by following these steps: Go to Menu Downloads or press CTRL+J to open your downloads. Right-click on a PDF file from the Downloads list. Select Always Open in System Viewer from the drop-down menu.