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Use Adobe Acrobat (in Firefox)" does not appear as an option for "Portable Document Format (PDF)" - Super User
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Clicking a .pdf link does not open .pdf file, it opens a SAVE DIALOG box | Firefox Support Forum | Mozilla Support
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Firefox 11.0 Installed Acrobat plugin 10.1.3 today doesn't work (ok in Safari) Installed extension PDF viewer 0.2.537 can now view PDF in firefox | Firefox Support Forum | Mozilla Support
The Problem: The built-in PDF reader in Firefox does not read the scripting in our interactive forms. The Solution: Change your
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Why is Adobe PDF reader no longer usable or available with Firefox? | Firefox Support Forum | Mozilla Support
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