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Can't open PDF files in Firefox 16.0.1

Posted

Mac OS 10.6.8, Firefox 16.0.1, PDF Viewer 0.6.39 installed. In Firefox>Preferences>Applications, PDFs are supposed to be handled by the PDF Browser 2.4.4 plug-in for Preview. However, when I try to view a PDF in Firefox, I get this:

"We are sorry, but Adobe Reader is unable to show documents in this browser configuration.

"Please use your browser to download this file and open it in Adobe Reader or Adobe Acrobat.

"To avoid this message in the future, many browsers provide a way to turn off certain add-ons, and some are able to show this document natively. Please contact your browser vendor for more details."

Why is Adobe Reader trying to open the PDF when Preview is the default? How do I disable Adobe Reader from doing anything in Firefox?

Chosen solution

Try to disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.

  • Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader
Read this answer in context 33

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.4 r402
  • Displays Java applet content, or a placeholder if Java is not installed.
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Adobe® Acrobat® Plug-in for Web Browsers, Version 11.0.0
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • Amazon MP3 Downloader Plugin 1.0.17
  • View PDF documents within your web browser.
  • The Google Earth Plugin allows you to view 3D imagery and terrain in your web browser.
  • iPhoto6
  • RealPlayer Plugin

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:16.0) Gecko/20100101 Firefox/16.0

More Information

Application Basics
Name
Firefox
Version
16.0.1
User Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:16.0) Gecko/20100101 Firefox/16.0
Profile Folder
Show in Finder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
1Password
3.9.9
true
onepassword@agilebits.com
Adblock Plus
2.1.2
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
DoNotTrackPlus
2.2.1.829
true
donottrackplus@abine.com
DownloadHelper
4.9.10
true
{b9db16a4-6edc-47ec-a1f4-b86292ed211d}
DownThemAll!
2.0.15
true
{DDC359D1-844A-42a7-9AA1-88A850A938A8}
Forecastfox
2.2.2
true
{0538E3E3-7E9B-4d49-8831-A227C80A7AD3}
HTTPS-Everywhere
3.0.2
true
https-everywhere@eff.org
PDF Viewer
0.6.39
true
uriloader@pdf.js
Personas
1.6.2
true
personas@christopher.beard
United States English Spellchecker
6.0
true
en-US@dictionaries.addons.mozilla.org
Add to Amazon Wish List Button
1.10
false
amznUWL2@amazon.com
Easy YouTube Video Downloader
6.5
false
{c0c9a2c7-2e5c-4447-bc53-97718bc91e1b}
EPUBReader
1.4.2.1
false
{5384767E-00D9-40E9-B72F-9CC39D655D6F}
Flashblock
1.5.15.1
false
{3d7eb24f-2740-49df-8937-200b1cc08f8a}
Ghostery
2.8.3
false
firefox@ghostery.com
Rapportive
1.4.0
false
rapportive@rapportive.com
WOT
20120926
false
{a0d7ccb3-214d-498b-b4aa-0e8fda9a7bf7}
Important Modified Preferences
Name
Value
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
1048576
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size_cached_value
1048576
browser.history_expire_days.mirror
180
browser.places.importBookmarksHTML
false
browser.places.importDefaults
false
browser.places.leftPaneFolderId
-1
browser.places.migratePostDataAnnotations
false
browser.places.smartBookmarksVersion
4
browser.places.updateRecentTagsUri
false
browser.search.useDBForOrder
true
browser.startup.homepage
http://www.doonesbury.com/strip
browser.startup.homepage_override.buildID
20121010144125
browser.startup.homepage_override.mstone
16.0.1
browser.tabs.loadInBackground
false
browser.tabs.onTop
false
dom.disable_open_during_load
false
extensions.lastAppVersion
16.0.1
gfx.blacklist.direct2d
3
gfx.blacklist.layers.direct3d9
3
network.cookie.prefsMigrated
true
network.http.max-persistent-connections-per-server
18
network.image.imageBehavior
0
places.database.lastMaintenance
1351099800
places.history.expiration.transient_current_max_pages
104858
places.last_vacuum
1343935653
plugin.disable_full_page_plugin_for_types
application/vnd.fdf
print.macosx.pagesetup
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUgQ29tcHV0ZXIvL0RURCBQTElT…
print.macosx.pagesetup-2
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO…
print.print_bgcolor
false
print.print_bgimages
false
print.print_command
print.print_downloadfonts
false
print.print_evenpages
true
print.print_footerleft
print.print_footerright
print.print_headerleft
print.print_headerright
print.print_in_color
true
print.print_margin_bottom
0.5
print.print_margin_left
0.5
print.print_margin_right
0.5
print.print_margin_top
0.5
print.print_oddpages
true
print.print_orientation
0
print.print_page_delay
50
print.print_pagedelay
500
print.print_paper_data
0
print.print_paper_height
11.00
print.print_paper_size
0
print.print_paper_size_type
1
print.print_paper_size_unit
0
print.print_paper_width
8.50
print.print_printer
print.print_reversed
false
print.print_scaling
1.00
print.print_shrink_to_fit
true
print.print_to_file
false
print.print_unwriteable_margin_bottom
56
print.print_unwriteable_margin_left
13
print.print_unwriteable_margin_right
13
print.print_unwriteable_margin_top
7
privacy.cpd.downloads
false
privacy.cpd.formdata
false
privacy.cpd.history
false
privacy.cpd.sessions
false
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.OCSP.URL
security.OCSP.signingCA
Builtin Object Token:IPS CLASE1 root
security.warn_viewing_mixed
false
Graphics
Vendor ID
0x1002
Device ID
0x6741
WebGL Renderer
ATI Technologies Inc. -- ATI Radeon HD 6750M OpenGL Engine -- 2.1 ATI-7.32.12
GPU Accelerated Windows
1/1 OpenGL
AzureBackend
quartz
JavaScript
Incremental GC
1
Accessibility
Activated
0
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.2
4.9.2
NSS
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS Util
3.13.6.0
3.13.6.0
NSS SSL
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS S/MIME
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC

finitarry 157 solutions 2178 answers

If it is a plugin taking over, then you cannot control which one will be used. You could set up Preview as a helper application instead, and load the .pdf file into it to read it.

ideato
  • Top 25 Contributor
617 solutions 4264 answers

Hello romad, try to Reset download actions by deleting mimeTypes.rdf in profile folder, then install Schubert|it plug in (it is specialy for mac) from : http://www.schubert-it.com/pluginpdf/

see : PDF files are blank and can't be downloaded on Mac


thank you

Question owner

finitarry,

It already is set up that way: "PDFs are supposed to be handled by the PDF Browser 2.4.4 plug-in for Preview."

ideato,

BTDT, no joy.

Modified by romad

cor-el
  • Top 10 Contributor
  • Moderator
10776 solutions 96959 answers

Chosen Solution

Try to disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.

  • Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader

Helpful Reply

cor-el, you nailed it.

There was a plug-in called "Adobe Acrobat NPAPI". With that disabled and the PDF Browser Plugin 2.4.4 enabled, I can now open PDFs in Firefox.