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Harpo Marx Level 1 Level 1

After I updated to Adobe Acrobat Reader, Build:


the following changes occured in Safari: the Preview toolbar at the bottom-center of the page has been replaced by a similar looking Acrobat Reader toolbar.


Nastily in Acrobat Reader preferences / Internet / Display PDF in browser using: Applications/Adobe is greyed out! I can't untick it.


Responsible might be this installed Plug-in (in Safari)?: Adobe Acrobat NPAPI Plug-in, Version 10.1.3


Adobe Acrobat NPAPI Plug-in, Version 10.1.3

Adobe® Acrobat® Plug-in for Web Browsers, Version 10.1.3 — from file “AdobePDFViewerNPAPI.plugin”.
application/pdfAcrobat Portable Document Formatpdf
application/vnd.adobe.pdfAcrobat Portable Document Format (Interim)pdf
application/vnd.adobe.pdfxmlAcrobat XML Portable Document Formatpdfxml
application/vnd.adobe.x-marsAcrobat XML Portable Document Format (Interim)mars
application/vnd.adobe.xdp+xmlXML Data Packagexdp
application/vnd.adobe.xfd+xmlFormFlow99 Data Filexfd
application/vnd.adobe.xfdfAcrobat Forms Data Format in XMLxfdf
application/vnd.fdfAcrobat Forms Data Formatfdf




How can I uninstall Safari Plug-Ins?


How can I get back to viewing PDFs in Safari with Preview? (In Finder pdf documents are still set to be opened with Preview.)


Thank you.

iMac, Mac OS X (10.7.3)
Solved by Carolyn Samit on Apr 13, 2012 3:15 PM Solved



Possibly, yes.


Go to /Library/Internet Plug-Ins


If you see the  Adobe PDF browser plugin in the Internet Plug-Ins folder, move it to the Trash.


Quit then relaunch Safari ...

Reply by Carolyn Samit on Apr 13, 2012 3:30 PM Helpful

Move both to the Desktop, then relaunch Safari to test.


It's ok to delete both files >

All replies

  • Carolyn Samit Level 10 Level 10



    Possibly, yes.


    Go to /Library/Internet Plug-Ins


    If you see the  Adobe PDF browser plugin in the Internet Plug-Ins folder, move it to the Trash.


    Quit then relaunch Safari ...

  • Harpo Marx Level 1 Level 1

    Hi Carolyn,




    -> AdobePDFViewer.plugin

    -> AdobePDFViewerNPAPI.plugin


    Do you know the differneces between eliminating both or just one?



    Thank you!

  • Carolyn Samit Level 10 Level 10

    Move both to the Desktop, then relaunch Safari to test.


    It's ok to delete both files >

  • Skiziks Level 1 Level 1

    My problem viewing pdf's in Safari was that all pdf's were black screens. The pdfs wouldn't open. All this after updating Adobe Reader to 10.1.3.

    Deleting the two plugins described above restored viewing pdf's in Safari.

    The link in Carolyn Samit's submission above outlines removing the two plugins and reinstalling Acrobat Reader.

    After following this advice pdf's were no longer viewable in Safari.

    My question now is, Is it advisable to not reinstall Acrobat Reader which puts the two plugins back into the Library folder, or not reinstall Reader and leave the two plugins out? What are consequences of not reinstalling?

  • EMACKAAY Level 1 Level 1

    I could not save downloaded .pdf files, let alone change their name, in Safari 5.1.5 (OS 10.7.3; Adobe Reader 10.1.3). But I could do this with other browsers such as Firefox. After moving the two plugins to the "Disabled Plug-Ins" folder in Library/Internet Plug-ins and relaunching Safari, everything came back to normal. I view .pdf files with Preview, but can also read them with the Adober reader.

  • Skiziks Level 1 Level 1



    This was on the Adobe Reader forum:


    Read this:

  • EMACKAAY Level 1 Level 1

    Thanks for the hint. I already saw that post and unticked the 32-bit option. As I indicated above, my problems looked already solved after the removal of the plug-ins and, so far, without ill effects on Safari or the Adobe Reader.

  • Skiziks Level 1 Level 1

    After removing the two plugins pdf's worked fine for me.


    But after seeing the suggestion about unchecking the 32 bit box I reinstalled Adobe Reader which reinstalled the plugins.

    With the 32 bit box unchecked and the plugins back, the pdfs work fine in Safari.

  • EMACKAAY Level 1 Level 1

    I did not go that far, but moved the two plug-ins back from disabled to the original position. Immediately Safari baulked at pdfs. So back they went to disabled and Safari is behaving again. If something does not work without the plug-ins, I will try reinstalling the Adobe Reader, as you suggest. In the meantime, my problem looks solved.

  • Rob Gendreau Level 2 Level 2

    Here's my problem, running 10.7.3 and Safari.


    I installed the 10.1.3 and have been running in 64 mode. If when viewing a PDF I choose File>Save As... I get a dialog saying "Export as... and upon trying to do so I get an error message that it can't export.


    If, however, I choose the little floppy icon in the popup at the bottom I get a "Save a copy as..." and everything works as expected.


    If I delete the Adobe plugins as specified in earlier posts, I get the Preview view of PDFs in Safari and Save As works normally.


    I tend to like Adobe's viewer because it defaults to a bigger view, otherwise it's apples/oranges, er adobes.



  • warley Level 1 Level 1

    I have the same problem--I installed a new Acrobat and it became the default reader for Safari.  But when I go to the Internet plug-in folder, it is *empty*--not a single plug-in is listed.  When I list all the plug-ins (by going to the help menu / Installed plug-ins in Safari), there's plenty of plugins installed.  I should add I don't have the slightest idea how to use Terminal (and I am deeply annoyed that Apple is increasingly making it impossible to do fixes without using Terminal)



  • EMACKAAY Level 1 Level 1

    Have you tried to locate the files with the general search function of the Finder? Look for names containing AdobePDFViewer. There should be two and those are the ones you want to remove.


    As for Terminal, we may both belong to a minority who are uncomfortable using it. But having tried it a few times, with precise instructions as to what to do, I must admit one survives and learns ...

  • pyrrhonota Level 1 Level 1

    warley, be aware that there are two Internet Plug-Ins folders. One in the Library folder at the root level available to everyone, and one in each user's Library available only to that user.

  • BenHemmens Level 1 Level 1

    This was very uncool of Adobe - it installed itself automatically with an update.


    In case anyone from Adobe is reading, I've tossed Acrobat reader as a result. Please do not hijack other software!


    However, it would also be nice if Safari had a place to manage its plugins within its own preferences. I thought it did – it has "extensions", are they not plugins? –, but this one wasn't visible there.


    Many thanks to Carolyn for the solution.

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