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I have Adobe reader installed, but can't open pdfs in Firefox and it doesn't show in the Applications tab.

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When I click on a pdf link, the new tab opens but doesn't show the content of the pdf. There is no error message. When I look under Tools, Options, applications, there is no option for handling pdfs. I have the Adobe reader for Firefox installed.

When I click on a pdf link, the new tab opens but doesn't show the content of the pdf. There is no error message. When I look under Tools, Options, applications, there is no option for handling pdfs. I have the Adobe reader for Firefox installed.

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