Firefox will not open PDF in Preview as it is set in Preferences

Preferences>Applications>Content Type: Portable Document Format (PDF) ... Action: Use Preview (default) OR Action: Preview in Firefox OR Action: Always Ask
Same result: Dialog box which says: "You have chosen to open (filename) ... Which is: (file type) ... From: (URL)
Would you like to save this file?" Options are Save File OR Cancel. There is no way to actually open the file without saving it first. I do not want to save the file.

Delete the '''mimetypes.rdf''' file in the profile folder with firefox closed, see below for finding the profile, then open FF again and change the options in the application menu.
* =>>>>> [[Profiles - Where Firefox stores your bookmarks, passwords and other user data]]

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Firefox will not open pdf files & changes the options/applications settings?

At first, with default settings, Firefox would not open pdf files & came up only with a blank screen & no file reference. Going to options/applications & changing the default to a new installation of Adobe Reader still brought up a blank screen but this time with the file ref. Oddly though, attempting to open any pdf file would then change the setting under applications back to Use Adobe Acrobat (in Firefox). But this doesn't work. So what do I need to do to get Firefox to open pdf files correctly using Adobe Reader?

See if either of these support article help you.
https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox
https://support.mozilla.com/en-US/kb/Opening+PDF+files+within+Firefox

What can I do to rectify the situation in which Firefox will not open pdf files in the browser, even though I have already used all the help suggestions to no avail?

I have tried everything Mozilla has suggested. Still when I click on a pdf, I get the message that the browser cannot open a pdf. I have gone through the help protocol, and it does not work.
I have uninstalled Firefox and reinstalled it, and still not able to open pdf files within the browser.
What else do I do, except go to IE or Chrome and just leave Firefox completely???

A possible cause is the presence of a PDF plugin from an older Adobe Reader plugin in the plugins folder in the Firefox program folder.
See [[Troubleshooting plugins]]
See also:<br />
http://kb2.adobe.com/cps/405/kb405461.html - The Adobe Acrobat/Reader cannot be used to view PDF files in a browser<br />
http://kb2.adobe.com/cps/836/cpsid_83688.html - I can’t view a PDF document in my web browser<br />

Firefox will not open PDF files from my financial website, but IE will.

When I try to open reports in Fidelity, UBS, etc, the file downloads, but removes the extension so it won't open and I get the message "Unknown file type". I tried the same procedure in IE, and the files open without problem. I do not want to use IE. How do I get the files to open. This is a recent (~5 days) problem.
Thanks,
Bill

See if either of these support article help you.
https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox
https://support.mozilla.com/en-US/kb/Opening+PDF+files+within+Firefox

Adobe Reader will not open PDF in browser simple answer.

I just had this problem and was able to work through it with the help of tech support from TD Ameritrade. The fix is simple so read on. After uninstalling and reinstalling all things adobe and trying other recommendations on these forums I was stumped. I called my broker tech section since I couldn't open their reports and we identified what my specific problem was. For me, and I imagine some of you this will help and prevent a lot of wasted time.
Nothing was wrong with my Adobe Reader. My problem was that I have a 64 bit operating system and both of my default browsers were 64 bit browsers. I did not know my internet explorer default browser was the 64 bit one until the technician that assisted me informed me that a recent windows update made all 64 bit systems default to 64 bit internet explorer browsers. You cannot change that default by choosing between 64 bit and 32 bit, because you can only choose internet explorer. That explains why my attempts to open with a 32 bit browsers always failed. I also tried with Firefox thinking it was 32 bit and it failed as well. The technician informed me Firefox is a 64 bit browser and then it made sense. I guess the recent Adobe reader update caused a change that no longer allowed my 64 bit system and 64 bit browser to open PDF's through the browser. The technician who assisted me has a 64 bit system and only uses 64 bit browsers and can still open PDF's through those browsers. That confused us for a while until we realized he had his Adobe updater turned off and therefore had not been exposed yet to the update that originated my problems.
****ANSWER FOR MY PROBLEM*******The quick answer is use Google Chrome or some other 32 bit browser. If you set a 32 bit browser as your default, the PDF's will open. You cannot set Internet Explorer 32 bit browser as your default if you have a 64 bit system and also have 64 bit Internet Explorer. The windows update prevents you from doing it. At least that is my understanding.
The bottom line is I have the newest Adobe Reader on a 64 bit system and can open any web PDF with Google Chrome set as my default browser, because it is a 32 bit browser. The new Adobe Reader will not open PDF's with a 64 bit browser in Vista. A 64 bit system is fine as long as you use the 32 bit browser to open your PDF's in Vista. I hope this helps some avoid some headaches. I wish it had been posted when my problem first arose.
I think you can use a 64 bit browser in Windows 9 or later, but for Vista the above applies.

Yes I can create a short cut to internet exp. 32 bit on my desktop and I can even be using Internet expl. 32 bit, but when I try to open a PDF with adobe reader it won't work with internet exp. as my default browser b/c windows will always choose Internet exp. 64 bit which isn't supported yet by adobe reader. With google chrome as my default browser windows can't choose an unsupported 64 bit browser in its place b/c google chrome doesn't have a 64 bit version.
My post was for those people who may not have realized yet that windows would not ever choose Internet expl. 32 bit over Internet expl. 64 bit if both exist on their system. For them it is easiest to just choose a default browser that only has a 32 bit version.
If I understood your reply correctly, you were telling me how to create a shortcut to Internet exp. 32 bit on my desk top. However, having that shortcut on my desk top and opening my browser through it will not prevent the problem of windows choosing my Internet exp. 64 bit browser for pdf's I try to open from the web. Thank you for your response, but I think the problem that I have tried to explain does exist for many users and can only be fixed by using a 32 bit browser that is not Internet explorer as your default browser. At some point if windows fixes the update that always chooses Internet expl. 64 bit over Internet expl. 32 bit, then this will all be irrelevant.
Thanks
Sent from my iPod

Safari will not open PDF

It use to work fine, but lately, Safari will not open PDF files from certain sites. It is OK when a site downloads a pdf to open it. It downloads it and Preview then opens it. But for other sites such as my bank web site, it opens the pdf within Safari and I just get a blank page.
It use to work, any idea how I can fix that?

Your problem isn't solved, you just added to it. Safari is perfectly capable of displaying PDF files without using any third-party applications or plugins, but you just installed one. Acrobat Reader is bloatware and totally unnecessary, so if you want to use Safari's built-in capability, do this:
1. Quit Safari if it's running.
2. Launch Acrobat Reader and go to Preferences > Internet and uncheck the box for the section at the top labeled "Display PDFs in browser using:".
3. Go to HD/Library/Internet Plug-Ins and delete the Adobe Reader plugin.
4. Enter this command in Terminal, press Enter, then quit Terminal:
defaults write com.apple.Safari WebKitOmitPDFSupport -bool false
Restart Safari and try dragging a PDF file from your Mac directly into an open browser window; it should render without any problems.
Mulder

Safari will not open pdf files.

Safari will not open pdf files, instead I get a blank grey screen. How can I get a viewable and downloadable screen/file? Tried Alt/Option to view and it doesn't work either. Firefox and Chrome will not work either.

For Mac check the Safari preferences.
General to set the options for opening links from applications.
Tabs to set the other options.
Hold down the command key to open any link in a new tab.
Sorry, gave up windows several years ago.

Adobe reader will not open pdf files I have saved as, or, export as pdf to my desktop (latest Maverick). The same file does open when I am on the source website (i.e. user manuals etc.). Why?

Adobe reader will not open pdf files I have saved as, or, export as pdf to my desktop (latest Maverick). The same file does open when I am on the source website (i.e. user manuals etc.). Why?

iMac G4, Mac OS X (10.4.9)
Make sure you have the latest Adobe Reader installed for your OS.
http://www.adobe.com/support/downloads/product.jsp?platform=macintosh&product=10
Did you try using Preview. If you control click on the PDF on your desktop you can use the "open with" option.

Reader 10.1.0 will not open PDF files

Hi
Reader 10.1.0 will not open PDF files in windows 7 64 bit using IE9
However it open using firefox?
Is it my settings ?
Is this version not compatible with IE9 ???
Please advise
Thanks
Perry

I am able to open PDF in IE9 on win 7 64 bit machine using Reader 10.1
Additionally,as per system requirements mentioned in Reader 10.1 download page (http://www.adobe.com/support/downloads/detail.jsp?ftpID=5138),Reader 10.1 is compatible with IE9.
What error message do you encounter when you try to open PDF in IE9?

I upgraded from 3.6.13 to Beta 4.0 and now Firefox will not open at all I tried to uninstall to start again but it will not uninstall either it does nothing.

I uninstalled Beta 4 and re-installed 3.6.13 now Firefox will not open at all I tried to uninstall to start again but it will not uninstall either it does nothing, I have been using Firefox for a long time but cannot resolve this problem can anyone help and give me a solution please. As I use Firefox as my web browser it is very frustrating.
The fact it will not uninstall appears to be something completely new as nobody I know who uses Firefox has ever encountered this in the past.

Did you check your security software (firewall)?
A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process.
See [[Server not found]] and [[Firewalls]] and http://kb.mozillazine.org/Firewalls
If necessary then also see:
* http://kb.mozillazine.org/Browser_will_not_start_up
* http://kb.mozillazine.org/Error_loading_websites

Firefox will not open on my computer the majority of the time. If I shut down and restart it will work sometimes, but not always. This started recently in the last two weeks. Today is June 12th 2011.

Firefox will not open on my computer the majority of the time. If I shut down and restart it will work sometimes, but not always. This started recently in the last two weeks. Today is June 12th 2011.

See:
* http://kb.mozillazine.org/Browser_will_not_start_up

Firefox will not open ANY site. Wont work AT ALL. Nothing seems to be working.

Firefox will not open ANY site. It worked last night, but not today. I uninstalled it many times, didn't worked. It displays the screen that says "unable to connect" yet chrome and explorer both work. I have disconnected and reconnected a few times, restarted my laptop, neither of those worked either. I have also tried turning "safe mode" off after re installing firefox, but again, that did not work. I need help :(.
Although, before this, firefox was not letting me use voice recording sites or any site that let me watch television online. It would load the commercials, but not play the episode. It wouldn't even let me upload pictures to photobucket. However, it worked using chrome or explorer.

Looks like a bunch of people have this problem. Anyone got any ideas to fix this???

Firefox will not open. Hangs at "connecting" stage. Non-responsive even to process shut-down via task manager.

Starting yesterday, Firefox will not open at all. It hangs at the "connecting stage." For hours. It will not shut down even using the task manager for applications or processes, and it locks up virtually every other application. I thought I managed to save an open Word document yesterday - it looked like a slow, but normal save during the Firefox hang, but the document was empty when I restarted my computer.
Even though my machine is not pentium 4 based, I tried starting using the Windows XP/M configuration, I downloaded and re-installed (over the top of) the existing version, I verified that no Mozilla processes were running before trying to start Mozilla, and tried creating a new profile. Absolutely no success. Every time (of the dozens) I have tried to start Firefox I have had to force a hard shut-down to get out of the application. I have now unpinned Firefox from my task bar because I keep forgetting and hitting it by reflex.
I am running version 11.0 (at least that is what I just downloaded - I am not positive what I was running yesterday). My system is Windows 7 Home Premium, Intel Core i3, 2.4 gHz, 4 GB RAM, 64 bit OS.
Next option is to restore to a previous version. If that doesn't work, I will uninstall and start over from scratch.

A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
*http://kb.mozillazine.org/Browser_will_not_start_up

I have no navigation bar and firefox will not open in safe mode to reset to default config. Reinstalling doesn't work. Any help please.

I have no navigation bar ever since I closed it to gain more space on the screen. It won't re-open. Firefox will not open in safe mode, but opens immediately in normal mode with the new improper config, so I cannot reset to default config. I erased Firefox and re-installed and it still opens with the same faulty config. Why does Firefox not give me the safe mode dialog box, why can I not re-open the nav bar, and how can I do these two things, please? Firefox is currently unusable for me without a nav bar and without access to the default settings in safe mode. I cannot research the extensions I'm running since I have no nav bar to go to Tools, Add-ons, Extensions.
== This happened ==
Every time Firefox opened
== I closed the navigation bar to gain more space on the screen and I couldn't re-open it. ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB6.4; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)

Hit the '''Alt''' key to show the Menu bar, then open View > Toolbars and select Menu bar and Navigation bar, so they have a check-mark.

I need to make a pdf document, made in photoshop, 'page turn' and then add it to my website. I know I can do this in indesign but indesign will not open pdf files for some inexplicable reason. Any ideas how I can do it without completely starting again?

I need to make a pdf document, already made in photoshop, 'page turn' and then add it to my website as an e-brochure. I know I can do this in indesign but indesign will not open pdf files for some inexplicable reason. Any ideas how I can do it without completely starting again?

Hello waitingone,
please try this (all terms are translated from my German programs to my best knowledge):
1. Did the creator of the pdf file enable the import options?
2. See import options: choose an other visibility option for your layer.
3. Let you show the import options and click into one with a black background and try these out (often a gray is selected).
4. See trimming: try the different modes there. Often works: "Media".
5. Is the pdf file (eg from Word) correctly created?
6. Is the PDF file protected? >>> no import possible.
7. If that does not help, store the pdf file in Acrobat, repair possible errors, run the PDF Optimizer before placing in InDesign.
Good luck!
Hans-Günter

Firefox will not open PDF in Preview as it is set in Preferences

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