Why can't I open PDF files in Firefox?

I cannot get PDF files to open for viewing in Firefox. I am on Mac OS platform. This seems to be such an ongoing issue. I have followed the troubleshooting procedures to no avail. I like the look of Firefox better than Chrome, but I am switching over to Chrome because PDF's are so much easier to handle on Chrome, and I am sick of wasting time with this. Any last minute tips or advice?

The Adobe Reader plugin may not be working properly on Mac.
* https://support.mozilla.org/kb/pdf-files-are-blank-and-cant-be-downloaded-mac
* https://support.mozilla.org/kb/Opening+PDF+files+within+Firefox
Disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.
PDF files may be found under entries like Portable document or Adobe PDF document or Adobe Acrobat Document.
*Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader

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Why can't I open pdf files in firefox anymore?

When opening pdf files it will only go in a loop and won't stop making new tabs.
The only way to stop this is by clicking on the home button several times or close firefox

It depends. When a server says that a file is of the application/pdf content type, it should load in the built-in PDF viewer, or in the Adobe plugin. However, if the server says it is a different content type, even if it has a .pdf extension, directing Firefox to open it can lead to an infinite loop of more and more tabs or windows opening.
The typical strong medicine for this is to rename the settings file that associates the problem content type with Firefox. This also will delete any past associations created for different content types and revert to the default.
Open your current Firefox settings (AKA Firefox profile) folder using either
* "3-bar" menu button > "?" button > Troubleshooting Information
* Help menu > Troubleshooting Information
In the first table on the page, click the "Show Folder" button
Leaving that window open, switch back to Firefox and Exit, either:
* "3-bar" menu button > "power" button
* File menu > Exit
Pause while Firefox finishes its cleanup, then rename '''mimeTypes.rdf''' to something like mimeTypes.old
Start Firefox back up again and you should get the standard behavior. This time, if Firefox doesn't know how to handle a PDF, please do not redirect it to open in Firefox. (If Firefox knows how to handle it, it won't pop the question in the first place.)
If I've misunderstood what happened, could you give a link to the problem download?
''Removed stray text from copy/paste error.''

Why can I not open PDF-files in InDesign CS4?

Hi,
Well then, as I wrote in the headline... Why can I not open PDF-files?
I get a notification that says that either the file is already open (which it's not) or it is missing a plug-in thingy for this kind of file.
So, how do I know which plug-in thing I should chose from Adobe which will solve my problem?
Could it be enough just to update the program? I tried with 6.0.6. upgrade but it wouldn't even open up. I'm not so good at this type of computerproblems (choosing upgrades, plug-in etc.). The program is not upgraded for a long time, unless it do it automatically, but I think we've chosen it not to....
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/S

See: Zanelli Multipage Importer
http://indesignsecrets.com/zanelli-releases-multipageimporter-for-importing-both-pdf-and-i ndd-files.php/comment-page-1

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Hi!
I think my question might be simple to answer, so please if you read this give it a try...
I just bought a new laptop with windows 7 on it. Adobe Reader 9 was allready installed. I wanted to open simple pdf files, but I got the message "Adobe Reader ?" in an empty field that pops up.
Why can't I open pdf files? Do I also need to install the Adobe Flash Player as well?
I would be very glad if you could give me a hint.
Thanx

It appears as if Adobe Reader is not correctly installed. Try installing the latest version 9.2 from http://get.adobe.com/reader/ - make sure that you uncheck any unwanted software bundled with the download.
P.S. no, you don't need Flash Player to open PDF files.

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I get the same thing... no matter what site i try to pull a pdf for IE10, it gives me the black x... if i use chrome it works, but my client does not want to use a different browser.
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The kicker is that my Admin profile works just fine.. no issues.. so i know it has something to do with his profile....
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Why can't I open PDF files created in Adobe X using Adobe XI? How do I fix this?

Why can't I open PDF files created using Adobe X in Adobe XI?

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[private data removed]

Why can't I open PDF files on iMac?

Why can't I use PDF files on my iMac or iPad ?

Here are some PDFs you may want to try http://www.dpor.virginia.gov/cic-ombudsman/
I can open them in my browser, but when I save them they are blank. Those emailed to me don't open. I get this error message:
Please wait...
If this message is not eventually replaced by the proper contents of the document, your PDF viewer may not be able to display this type of document.
You can upgrade to the latest version of Adobe Reader for Windows®, Mac, or Linux® by visiting http://www.adobe.com/go/reader_download.
For more assistance with Adobe Reader visit http://www.adobe.com/go/acrreader.
Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries. Mac is a trademark of Apple Inc., registered in the United States and other countries. Linux is the registered trademark of Linus Torvalds in the U.S. and other countries.
I'm using Mac OSX 10.9.2 and latest version of Adobe Reader on a Macbook Air. I've tried Preview, Pages, Mail, PDF Signer. All give the same error message.
Here's what the folks at PDF signer told me a couple of days ago:
That PDF document was created using Adobe LiveCycle Designer and contains
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specifications. This PDF document will only open in Adobe products (Acrobat
and Reader), all other PDF viewers/editors are unable to open these kind of
documents (e.g. it won't open in the Mac's "Preview" application as well).
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Why can I not open PDF files any more?

Why can I not open up most of the PDF files that I receive via email. This has not been an issue before. Do I have to renew something or reload?
8.1 windows.

Hi Alan,
Please download PDF reader if not already.
https://acrobat.adobe.com/in/en/products/pdf-reader.html
Hope this helps.
Thanks and Regards,
Sumit Singh

Why can I not open pdf files in Safari? All I get is a black screen.

Suddenly Safari will not allow me to open pdf-files, and I have gathered from other discussions that it is a problem. I removed Adobe Reader, to see if Preview would kick in but it did not work. Any suggestions?
Thankful for any ideas.

Back up all data.
Quit Safari. In the Finder, select Go ▹ Go to Folder... from the menu bar, or press the key combination shift-command-G. Copy the line of text below into the box that opens, and press return:
/Library/Internet Plug-ins
From the folder that opens, remove any items that have the letters “PDF” in the name. You may be prompted for your login password. Then launch Safari and test.
If you still have the issue, repeat with this line:
~/Library/Internet Plug-ins
If you don’t like the results of this procedure, restore the items from the backup you made before you started. Relaunch Safari again.

Why can't I open PDF files with Adobe Reader in Google Chrome?

Suddenly I cannot open PDF files with Adobe Reader when I am in Google Chrome. I have installed up to date versions of both. What is happening?

http://blogs.adobe.com/acrolaw/2011/12/get-reader-or-acrobat-to-work-in-chrome-compact-pdf -output-from-chrome/

Why can't I open zip-files using Firefox?

Every time I try to open a zip-file using Firefox all it does is open new tabs. I end up with dozens, sometimes hundreds, of open tabs that have nothing on the pages and the file never gets opened. Why does this happen? Is there a way to fix it and if so, how?

http://support.mozilla.com/en-US/kb/Managing+file+types
Set Adobe Acrobat to handle PDF files, not Firefox.

I can no longer open .pdf files in Firefox 4

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I have just upgraded to Mavericks from OS 10.6.8. When I attempt to open a pdf file in Safari, I get the following message:
Abobe Reader
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Don

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Don't know why you would uninstall Acrobat. I assume you must have another PDF reader if you don't want Acrobat installed (for whatever reason). If you do not have another reader, you will not be able to read the PDF. On a MAC, you could use the Preview, but a PC does not have that option. On a PC, the reading of a PDF depends on the settings of both your OS and the mail package. It is not clear what happens when you try to open the PDF, or even how you are trying to open it. Hard to help when we don't know what you tried to do. Sorry.

Why can I not open PDF files using adobe reader in firefox?

When I try to read a PDF file with adobe reader the file looks like it starts to load, I see in the tool bar the page count but the file never opens.

You can change the action for Portable Document Format (PDF) from Preview in Firefox to use another application like the Adobe Reader or set to Always Ask in "Firefox > Options/Preferences > Applications".
You can set the pdfjs.disabled pref to true on the <b>about:config</b> page to disable the build-in PDF viewer.
You can check the value of the plugin.disable_full_page_plugin_for_types pref on the about:config page and remove the application/pdf part if present or reset the pref to the default via the right-click context menu.
See also:
*https://support.mozilla.org/kb/view-pdf-files-firefox-without-downloading-them
Note that your System Details List shows that you have a user.js file in the profile folder to initialize some prefs on each start of Firefox.
*http://kb.mozillazine.org/Preferences_not_saved
The user.js file is only present if you or other software has created it, so normally it wouldn't be there.
You may want to check its content with a plain text editor if you didn't create this file yourself.
The user.js file is read each time you start Firefox and initializes preferences to the value specified in this file, so involved preferences can only be changed temporarily for the current session.

Why can't I open PDF files in Firefox?

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