Preview on ML cannot open pdf

I am working on a new ML installation. It does not open pdf... Error message points to the file itself (file damaged), but I have tried more files. It cannot be the case that all of them are damaged at the same time, only on one computer.
Does someone has the same issue?

With respect, I have Preview and Adobe Reader XI working in perfect harmony on Mountain Lion. In QuickLook, direct PDF viewing, and within Safari 6.02 as plug-ins. In the latter case, the Adobe PDF plug-in takes priority.
Where installed Reader versions trailed behind Adobe updates for given OS X releases, is where I have experienced issues.
The original poster may need to re-establish Preview as their default application for opening PDF. This is done, as you know, through the Get Info panel and Open with selection.

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I cannot open PDFs on my Mac but can open the same files on my PC. When I create a PDF from the computer and when I send it to our office printer as a scan-PDF, I cannot open either. Have downloaded Adobe Acrobat, etc., and still waiting for a response from them. Does anyone have any suggestions?

Don't use Acrobat, use Preview. Preview is already pre-installed on your computer. If you cannot locate it, type Command-Shift (opens Spotlight) and type in Preview and hit return.

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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 in Safari

Can someone please help.
I cannot open PDF files through Safari. I've read some of the other comments on the same/similar issue and I have tried those steps and have been unsuccessful. I still cannot view PDF files through Safari, in fact, the Preview doesn't even open. When it worked the preview icon would pop up in the tool bar at the bottom of my Mac Book, but it no longer does that. Here is what I've tried;
Upgrading my Adobe, even though I know you don't need it for Mac.
Removed Adobe from applications and deleted.
Went to Library and internet plug ins and there is nothing in that folder.
Went to internet preferences and un clicked enable plug ins.
Not quite sure what else to do. Any help would be greatly appreciated. Thank you in advanced.

Hi Roxana ..
Which Mac OS X do you have installed and which version of Safari ??
Upgrading my Adobe, even though I know you don't need it for Mac.
You do if you want to use Adobe Acrobat Reader to view PDF files.
Went to Library and internet plug ins and there is nothing in that folder.
There are two libraries. One is root /Library
The other denotes your Home folder ~/Library (the Tilde character represents your Home folder)
Go to /Library/Internet Plug-Ins
If you see the Adobe PDF browser plugin or just PDF Browser plugin, move that to the Trash. Quit then relaunch Safari. Try a PDF file.
edited by: cs

Cannot open .pdfs in Firefox

My wife's machine is running Windows 8.1, Firefox 34.0.5 and Adobe Acrobat X Standard. Cannot open .pdfs in the browser. Clicking a link to a .pdf will open a new tab that immediately closes, leaving me right back where I was, as if I had never clicked the link. I can right click, then Save As, download the file and open in Adobe Acrobat X. But that's not what I want, and not how it was designed.
Internet Explorer 11 opens .pdfs in the environment described above, in-browser, with no problems.
I've followed all the instructions at https://support.mozilla.org/en-US/questions/972278 and http://helpx.adobe.com/acrobat/kb/cant-view-pdf-web.html. Neither Mozilla's nor Adobe's instructions can get me up and running.
As a nuclear option, I uninstalled Adobe Acrobat, restarted the machine, uninstalled Firefox, restarted the machine, re-installed Adobe Acrobat, restarted the machine, and re-installed Firefox, and restarted the machine. Attempting to open any .pdf yields the same result, even after uninstalling and re-installing everything. What's going on here? Why does Firefox open a blank tab, and then close it right away? Block pop-ups is set to off, and antivirus pop-up blocking is disabled.
My own machine running Windows 7, Firefox 34.0.5, and Adobe Acrobat X Standard opens .pdfs in-browser just fine, with no problems.
Any advice? I'm pulling my hair out!! Thanks for your time.
kjbgu04

Hey,
Try the following:
* Go to setting (3 bars) > options > applications.
* Under applications panel.
* Find Portable Document Format (PDF) in the list and click on it to select it.
* Click on the drop-down arrow in the Action column for the above entry and select Use PDF reader name (in Firefox) or preview in firefox.
If PDF files are still downloaded instead of displayed, try these solutions
Reset download actions
* Open your profile folder:
Click the menu button[[Image:New Fx Menu]], click help[[Image:Help-29]]and select Troubleshooting Information. The Troubleshooting Information tab will open.
Under the Application Basics section, click on Show Folder. A window with your profile files will open.
Click the menu button[[Image:New Fx Menu]]and then click Exit [[Image:Close 29]]
Delete the mimetypes.rdf file.
Then open firefox again and see.
I hope it helps.

Cannot open PDF in Firefox- Problem Solved

Hello,
I cannot open or download PDFs in Firefox. Word Documents and Powerpoints are fine.
I had the Firefox issue where I photos were saving as Preview Documents and I tried to fix that.
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Problem Solved!

anything here ?
I cannot open pdf files on the internet...(firefox)

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Hi Sharon,
Highlight a PDF in the Finder, do a Get Info on it, (CMD+i), what does it say for Open with? Or choose Open with... Preview.
Another test is to open Preview in Applications, then drag a PDF to Preview's icon in the Dock. What happens?

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Open Tools/Options/Advanced/general/Config. editor, copy mail.server.default.fetch_by_chunks into the search box, double-click the preference to make its value false, OK, restart TB, and see if you still have problems with pdf attachments.
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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).
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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.

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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
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I don't know if there is a place to give that feedback.

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Preview on ML cannot open pdf

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