I use a Mac and cannot open pdf files in Firefox.

Cannot open pdf, either from websites or attachments to emails. Each time that I try I get this menu of "what to open with" and none of them work.. No problems with Safari.

Found a solution on the Apple community forum. Make sure Adobe isn't enabled as the pdf reader, then go into Macintosh hd/library/internet plugins and delete all pdf plugins. Solved the problem!

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I use a mac, and cannot open pdf links with firefox 4.0. Is there a fix?

Whenever I go to site that includes a pdf, such as knitting instructions, Firefox takes me to blank page, listed as "done." There was a plugin for the earlier version of Firefox, but it won't work on 4.0. this is really frustrating!!

Found a solution on the Apple community forum. Make sure Adobe isn't enabled as the pdf reader, then go into Macintosh hd/library/internet plugins and delete all pdf plugins. Solved the problem!

I have an iMac and cannot open PDF files in Firefox now. How do I fix this please?

I have an iMac and cannot open PDF files while working in my university site in Firefox now. How do I fix this please?

I have a similar problem - not mac related and sometimes I find if I download the pdf file I can open it then.

Help - "Acrobat is being used by another application and cannot open PDF files until the other application is closed."

Hello,
I searched this site and google for this error terminology and come up dry. I support a user who has been for years using Acrobat 5 (yes, I know...) to read files in a client DB program, as well as other PDF files on their PC. In the last week or so, they have started gatting this error "Acrobat is being used by another application and cannot open PDF files until the other application is closed." any time they attempt to open a PDF file attached to an email (via Outlook).
It is my understanding that they cannot upgrade to a newer version of Acrobat because of limitations of their client software, but had not previously had any issues viewing PDF notes from the DB, and PDF attachments in their email.
I have tried uninstalling and re-installing, as well as tried using Adobe Reader 7 & 9 in conjunction with Acrobat to try to get around this issue, but have not been successful.
Any ideas?
Thanks,
Jesse

I don't have an answer to your technical problem. The product I assume is Acrobat that you are talking about (based on the post title), Adobe is the company name. This is a good place to ask questions on Acrobat if folks can figure out what you are talking about. They will ask for the product version number (like AA9.3.3), operating system, and other applications if appropriate. Also, just what you are doing that generates the message.
As for Adobe, you are not likely to get an answer from them here in the user forum. You will be lucky if you can get an answer if you can contact them and not be on hold for more than an hour (sorry, this is why a lot of folks end up in the forum).
So, to help others try to answer your question, what are the products and versions involved? What OS? What are you doing when the message comes up.

I have adobe 9 and cannot open PDF files????

I have Adobe 9 and cannot open PDF Files. It gives me an encoding box??

Back up all data.
If Adobe Reader or Acrobat is installed, there should be a setting in its preferences such as Display PDF in Browser. I don't use those applications myself, so I can't be more precise. Deselect that setting, if it's selected. Otherwise do as follows.
Triple-click anywhere in the line of text below on this page to select it, the copy the selected text to the Clipboard by pressing the key combination command-C:
/Library/Internet Plug-ins
In the Finder, select
Go ▹ Go to Folder
from the menu bar, or press the key combination shift-command-G. Paste into the text box that opens (command-V), then press return.
From the folder that opens, move to the Trash any items that have "Adobe" or “PDF” in the name. You may be prompted for your login password. Then quit and relaunch Safari, and test.
The "Silverlight" web plugin distributed by Microsoft can also interfere with PDF display in Safari, so you may need to remove it as well, if it's present. The same goes for a plugin called "iGetter," and perhaps others — I don't have a complete list.
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.

Cannot open pdf files in Firefox.

I cannot open pdf files in Firefox. (I can in Chrome).
I tried Menu - Preferences - PDF - Use Adobe Acrobat Professional. Also tried the same with PDF Browser Plugin 2.4.4
Clicking on a PDF link just opens a blank page.

When I enter about:preferences#applications <Enter> in the address bar, then for PDF it shows:
pdf File (application/x-download) ... Use Adobe Acrobat Professional
pdf File (application/x-pdf) .... Use Adobe Acrobat Professional
Portable Document Format (PDF) ... Save File'''
I would like all PDF's to open in Adobe Acrobat 8 Professional.
Right now none of the PDF's open at all, so opening in Firefox or any other viewer would be preferred over not showing up at all.

Cannot open pdf files with Firefox's built-in pdf viewer

This just started (I think) with Firefox 37.01. This is on Win7-X64. I cannot open pdf files with the Firefox built-in pdf viewer. If I click on the file or try to open it from within Firefox, it brings up a "opening filename.pdf" message. If I select the "Open with" radio button as 'Firefox (default),' it just keeps looping on this process; it never opens. In Tools => Options => Applications, Portable Document Format (PDF) is indicated as 'Preview in Firefox.' I've never had any other PDF viewer installed on this computer. I've tried disabling all plug-ins and extensions, but it still doesn't work. I searched for solutions but haven't found any for this specific issue.
Thanks for the help.

Hello,
Have you tried, to start Firefox in safemode you can do so by following these steps
'''If Firefox is open,''' you can restart in Firefox Safe Mode from the Help menu:
* Click the menu button [[Image:New Fx Menu]], click Help [[Image:Help-29]] and select ''Restart with Add-ons Disabled''.
'''If Firefox is not running,''' you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' <br>(you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
When the Firefox Safe Mode window appears, select "Start in Safe Mode".
;[[Image:SafeMode-Fx35]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.

Cannot open pdf file with Firefox 11.0

Firefox automatically upgrades the version I am using. Since it was recently upgraded I cannot open pdf files. Am faced with a blank page. I went through some of the suggestions on these pages and when I opened the Tools window, there is a warning:
Firefox PDF Plugin for Mac OS X is incompatible with Firefox 11!
Is there a way around it? Or is it time to say goodbye to Firefox and move to Safari?

When Firefox updates, it turns
off add-ons that are not
compatible with the new
version. In addition, add-ons
that may have been
automatically installed by other
programs without your
knowledge (third party add-
ons) have been disabled. For
more info about re-enabling
add-ons, see the link below.
http://support.mozilla.org/en-US/kb/Add-ons%20are%20disabled%20after%20updating%20Firefox#os=android&browser=m10

I cannot open PDF files within Firefox.

I'm running Firefox 3.6.23 on a Macbook pro with version 10.6.8 installed. However I'm unable to open pdf files online. It works on google chrome from the same computer, just not firefox. There is a blank area where the pdf file should open, and nothing happens. I cannot download the file using firefox either. I've tried restarting and such, can you please help me?

fomamac2guy wrote:
Now, I cannot open PDF files that are contained within a website, i.e. a lunch menu that is on a restaurant website.
Does this help with Firefox?

I cannot open pdf files with Firefox using a Mac 10.5.8 OSX

The new version of Firefox does not support opening pdf files using a Mac 1.5.8 OSX with an Intel processor. Anything I can do?

ios 6 requires itunes 10.6.3 or higher which requires Mac OS 10.6.8 or higher

Downloaded certain files from my old computer on a memory stick.Have inputted stick into my new mac and can open PDF files but not xlr,aww or eps files.Is there a solution to this please?

Transferred certain files to my new Mac from my old computer via memory stick.Can open PDF files but not xlr,aww or wps ones.The important ones are in xlr format.Is there a solution please?

My guess is they don't care. Most likely they're illiterate and don't know what a colon is for. They probably think it's a little-used character. Remember: these are the people who don't know the difference between "deprecate" and "depreciate".
I have the same colon problem as you do. But it's not the biggest problem I have encountered in Lion. If it was only that I'd be Mr. Delighted with Lion. There's worse than having a colon - uh - that won't cooperate. A lot worse, in Lion.

I downloaded Adobe Reader and cannot open PDF files, can anyone tell me why? or what I need to do.

I am not able to open PDF files or documents. Why?

Here is my assessment, Claudio. I know you are revered among your peers and it's very obvious that you live on these forums. You have undoubtedly helped a lot of people and you will be rewarded in your afterlife for your endeavors here but here's a reality check for both you and Pat:
What lesson did D.Call learn from you? Likely the lesson was, don't post here or you'll be treated as an imbecile by some hotshot bitwhiz named Claudio Gonzalez.
Did you not see that D.Call said s/he was an inexperienced computer user… and was obviously asking for elementary level assistance? You were blinded by your belief that your knowledge and expertise is being wasted on anyone who isn’t forthcoming to your expectations. I merely pointed out that if you think it's such a waste of your time, why dwell? You should have left Graffiti to work with D.Call and headed off to another thread. Surely there were other posts requiring your extreme level of higher intelligence.
Think about this: You don't like it when someone talks down to you as I have here, now do you? No one does. Right now as you read this my guess is you are fuming and likely trying to think of a way to smite me. You can respond to this post in whatever tone or language you choose but I won't take offense. I’ll be the bigger man… I promise I won't reply so you can have the last word.
When you respond, see if you can take it up a notch and maybe even admit you made a mistake with your corkscrew remark. I don't think you would ever risk being so disrespectful to D.Call, and most certainly, not to me or anyone else if we were face-to-face. If you worked in my company, you would be fired for disrespecting my customers.
By the way, do you and Pat have spell check ability? If you do, you should use it.

Adobe acrobat X cannot open PDF files in Firefox, though IE can. What gives?

when I download a page that's a PDF file from the Web, Firefox cannot open it, although Internet Explorer can. I just uninstalled Adobe Acrobat Reader 5.0 because I had Adobe Reader X installed.

When I enter about:preferences#applications <Enter> in the address bar, then for PDF it shows:
pdf File (application/x-download) ... Use Adobe Acrobat Professional
pdf File (application/x-pdf) .... Use Adobe Acrobat Professional
Portable Document Format (PDF) ... Save File'''
I would like all PDF's to open in Adobe Acrobat 8 Professional.
Right now none of the PDF's open at all, so opening in Firefox or any other viewer would be preferred over not showing up at all.

Hello. My safari (and i keep it updated) cannot open PDF files. Should i install Adobe Reader and which version????? I have Mac Book Pro running OS 10.9

My safari (and i keep it updated) cannot open PDF files.Should i install Adobe Reader and which version????/ I have Mac Book Pro running OS 10.9
Please help me!!!!

Back up all data.
If Adobe Reader or Acrobat is installed, there should be a setting in its preferences such as Display PDF in Browser. I don't use those applications myself, so I can't be more precise. Deselect that setting, if it's selected. Otherwise do as follows.
Triple-click anywhere in the line of text below on this page to select it, the copy the selected text to the Clipboard by pressing the key combination command-C:
/Library/Internet Plug-ins
In the Finder, select
Go ▹ Go to Folder
from the menu bar, or press the key combination shift-command-G. Paste into the text box that opens (command-V), then press return.
From the folder that opens, move to the Trash any items that have "Adobe" or “PDF” in the name. You may be prompted for your login password. Then quit and relaunch Safari, and test.
The "Silverlight" web plugin distributed by Microsoft can also interfere with PDF display in Safari, so you may need to remove it as well, if it's present. The same goes for a plugin called "iGetter," and perhaps others — I don't have a complete list.
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.

I cannot open pdf files in safari. It tells me first character is invalid. I have deleted plug-ins and reinstalled program. HELP

cannot open PDF files in safari. It tells me first character is invalid - I have deleted plug-ins and reinstalled the program.

HI..
If you are using Adobe Reader ...
Try uninstalling the current copy of Adobe Reader first.
Best to use a utility to do this to make sure all the associated files are removed as well > Download AppCleaner for Mac - Uninstall your apps easily. MacUpdate.com
Then reinstall > http://get.adobe.com/reader/
Quit then relaunch Safari to test.

I use a Mac and cannot open pdf files in Firefox.

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