Lately on the Web, pdf files are not correctly; What is the problem and how can I fix this so I don't have to use IE?

I am a teacher and often need to open the PDF files of academic electronic databases of journal articles. In the last two or three weeks, when I try to do it using Firefox, only the first page of the pdf display and the rest are empty. In addition, a bar appears in the upper part with the message "this pdf file cannot be displayed properly." So I had to switch to Internet Explorer to open files and do my research. What happens and how can I fix this problem so that you can open PDFs from the Web in Firefox and ask them to work correctly?

Hello, firefox 19 introduced its own Viewer integrated pdf - if you want to switch it to the plugin you used before displaying a PDF file just go to the firefox options > applications and scroll down and set the default action for the portable document (pdf) format.

How to disable the built-in PDF Viewer and use another Viewer

Tags: Firefox

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