Reader won't run on Firefox

Running Win8 w/Firefox. Reader works in IE but not in Firefox???

Fireofx (since version 20) has it's own PDF viewer built in. Personally I don't like it, because it's incompatible with a great many PDFs that are online. That said, here's how to "disable" Firefox's PDF Viewer and use Reader:
In Firefox make sure you have at least two (2) tabs open - (Ctrl+T opens a new tab)
In the address bar of one tab, type "about:config" - minus the quotes, of course
You'll see a warning. Click "I'll be careful, I promise" and continue to the configuration page.
There's a search bar at the top. Type "js" - again, minus the quotes.
In the results you'll see pdfjsviewer.disabled with a vaule of false. Click it once, then right click it and choose Toggle to make the value "True".
Close that tab.
Click Tools>Options and go to the Applications tab
Locate Adobe Acrobat Document (or Portable Document File (PDF)) in the list and click the drop-down to select "Use Adobe Reader (in Firefox)". (Mine doesn't have that because I also have Acrobat Pro installed)
Click OK.
Click Tools>Addons to see that the Acrobat plugin is installed
Close and restart Firefox. PDFs should now open in a browser window with the Reader plugin.

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Web-based apps that require Silverlight won't run in Firefox even though the latest version of Silverlight is installed.

I am running Windows 7 SP1, Firefox 11, and have MS Silverlight v5.0.61118.0 installed along with the Silverlight Plug-In 5.0.61118.0 enabled.
The problem is I cannot get certain apps to run in Firefox that require MS Silverlight. I keep getting the prompt to install. If I click to install, I'm told the the version of Microsoft Silverlight I'm attempting to install is already installed.
What more can I do?

Hi Jojo,
Similar issue here. I had iPlayer but it 'died' now I can't install it...or any other app such as Adobe Air. I have an outstanding question trying to resolve it as well.

Youtube won't run with firefox or Facebook

When wanting to run video from youtube on both firefox and facebook from my Android phone I get a message telling me I need an account with youtube and a channel. I have an account with youtube and it won't let me sign in when attempting to.
Have tried using Google browser on phone and am able to run youtube content and video with no problem.
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Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
The Firefox cache temporarily stores images, scripts, and other parts of websites while you are browsing. <br>
Note: ''This will temporarily log you out of all sites you're logged in to.''
To clear cache and cookies, do the following:
#Tap the menu icon located at the top right corner. This is the icon with 3 bars. On older Android devices you'll have to press the hardware menu key and then tap More.
#Tap '''Settings'''.
#After that, you will be taken to the settings screen. In the settings screen, look under the section '''''Privacy & Security''''' and select '''Clear private data'''.
#You will then be taken to a list of what can be cleared. Select the following 2 for deletion:
#*Cookies & active logins
#*Cache
#After those have been selected, tap the '''Clear data''' button to actually clear the cache and cookies.
Did this help you with your problems? Please let us know!

Aleks 'higher ed' -- precalcus -- won't run on Firefox for windows; I want to use Firefox, not Chrome or Explorer per the ALEKS recomendation; what should I do

I tried to join ALECKS. I received a Java warning that Google has not fixed a problem that makes Firefox running on Windows unstable when using a Java version = or > 7.0. I don't want to follow the Alex recommendation to use Chrome or Explorer; using the ALECKS path to install a 6.x version of Java didn't work for me. I want to use Firefox as my only browser. If that is not possible re: ALECKS, I will use the Khan Academy in lieu of ALECKS.

check your plugins
*https://www.mozilla.org/en-US/plugincheck/

[SOLVED] Forms from Developer Suite 10 - Won't run in Firefox

Hi,
I have both Firefox and IE6 installed.
This is my first use of Forms Builder on this machine.
When I click the "run" icon, a new tab is opened in Firefox and I have this message:
URL: http://www.%1.com/
Page: Unable to find a server.
I think I have to change the default browser to IE6 in Forms config file, but I don't know how.
Many thanks for your help :-)
Hi again
I went into Settings > Preferences > Runtime > Browser path and I set it to IE6
Then Forms asked me to install JInitiator
And now little DEPT is happy in exequery.
Many thanks :-)
Message was edited by:
JeanParis

I was unaware of that. I'll give it a try. Thanks.

You Tube videos won't run in Firefox, will in Safari!

I can no longer get videos to run in You Tube. I'm running the latest Firefox and Lion. All I see are black shapes. The videos do run in Safari, however. Fix? Workaround? Thanks.

Didn't help. But thanks. Would completely deleting Flash and then reinstalling work?

Script won't run in firefox but does in IE, chrome and safari

i have a landing page with a web form script, www.wholewoman.com/newpages/landing/helpforcystocele.html. the script does not show up in firefox. further, none of our videos (served from kaltura (CDN) show up in firefox. nor does the registration script for our drupal forum. the good news is there are a lot of firefox users in the world. the bad news is that none of them can opt into my list, watch my videos or register for my forum. help!

As posted already, your problem has nothing to do with CSP, but with blocking active mixed content.
You can see that there is a shield icon on the left end of the location bar before the "Site Identity Button" (globe/padlock) on the location bar indicating that mixed content is blocked.
*https://support.mozilla.org/kb/how-does-content-isnt-secure-affect-my-safety
*https://developer.mozilla.org/Security/MixedContent
This extension can allow such active mixed content by toggling the security.mixed_content.block_active_content pref.<br />
Note that this is a pref that works globally
*https://addons.mozilla.org/firefox/addon/toggle-mixed-active-content/

HMRC software won't run with Firefox - is there an easy to switch back to Int Explorer and then revert to Firefox after completing task?

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You can use an extension like IE Tab or IE View to use the IE rendering engine in Firefox.
* IE Tab Plus (FF 3.6+): https://addons.mozilla.org/firefox/addon/10909/
* IE View: https://addons.mozilla.org/firefox/addon/35
* IE View Lite: https://addons.mozilla.org/firefox/addon/1429

Since updating to XI 11.0.10.32 Reader won't run in Protected Mode. How do I fix this?

The "tell me more" was no help at all. I'm running Windows 7 Home Premium SP1 up to date with patches, and AVG Ultimate 2015 with ZEN for internet security, and configuration optimisation.

Most likely it will work if you select 'Always open with Protected Mode disabled'.

I have Apache running a .aspx page, but it won't run in firefox 3.6

running windows XP. Developed the .aspx in Visual Studio 8. was running the Apache on my XP computer. This system website was working and doing queries for a year, then it was idle for a few months and it no longer 'works'. I wonder if its a problem with new Firefox, or IE8... it was developed in IE6 era.

A good place to ask questions and advice about web development is at the MozillaZine Web Development/Standards Evangelism forum.
The helpers at that forum are more knowledgeable about web development issues.
You need to register at the MozillaZine forum site in order to post at that forum.
See http://forums.mozillazine.org/viewforum.php?f=25

Aperture 2 won't run after Firefox upgrade

After allowing Firefox to upgrade a few days ago, I have been unable to get Aperture to work. It starts up, begins building previews, then unexpectedly quits after about 15 minutes.
Things I have tried: Disk Utility, reinstalling Aperture, reinstalling the OS, consistency check on library, starting up with Command-Option, Rebuild library database (quit unexpectedly after several hours)
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the only other upgrade was it insisted Flash needed to be upgraded, but it wouldn't let me install it. I finally downgraded to Firefox 3.5 to reinstall Flash.
I'm not sure if I understood what you were asking me to check. I started with previews off, then selected generate thumbnails with the option key. It didn't have a problem doing that. I then restarted with the previews on. This time it took more than twice as much time to quit unexpectedly.

Bing Animated pictures of the day won't run on firefox, picture is different. Why?

After a Firefox update, somewhere in the last 3 to 4 months when it comes up on my home page, which is Bing, if the picture of the day is a short video loop, which occurs 3 to 5 times a month, the video will not play. I have activated the control that says if a picture is a video, play it but this makes no difference. I have checked this out by running Internet Explorer, which also has Bing as my home page, and the short video loops run. I have also noticed that if the picture of the day is a video loop, the picture on Firefox is a different view of the same photo that is on Internet Explorer besides also not animating. Why is this? The latest video loop on Bing was yesterday (February 11). It did not animate on Bing and is a different view of the scene.

Did you check the Bing settings for the home page?
*http://www.bing.com/account/homepage
Videos and panoramas:
*Choose what happens when the homepage image is a video or panorama.
**Play automatically
**Don't play automatically
**Show a still image

I am having trouble running the New York Times Reader (Times Reader) application. It runs on adobe air. I've reloaded adobe air and the application, but it won't run. Any ideas?

I can't figure out why the Times Reader won't run on my Mac (OS 10.8.5). The application opens, but doesn't run. Nothing shows up on the screen except the menu bar at the top.
I have reloaded the application, and uninstalled and reinstalled Adobe Air, but neither has helped.
Loooking for ideas.

If it happens again then try to reload the website or clear the cache and the cookies from that website.
Reload web page(s) and bypass the cache.
* Press and hold Shift and left-click the Reload button.
* Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
* Press "Cmd + Shift + R" (MAC)
"Clear the Cache":
* Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Tools > Options > Privacy > Cookies: "Show Cookies"
*http://support.mozilla.com/kb/Deleting+cookies
*http://support.mozilla.com/kb/How+to+clear+the+cache

I have a Windows 2003 Server 64-Bit, and when I upgraded to Firefox 4.0.1 now it won't run, it keeps saying to restart to complete the installation, but I've restarted theserver 4 times, and I still can't use it.

I have a Windows 2003 Server 64-Bit, and when I upgraded to Firefox 4.0.1 now it won't run, it keeps saying to restart the computer to complete the installation, but I've restarted theserver 4 times, and I still can't use it.

I ended up putting it in DFU mode. It's kinda hard to tell it was in DFU mode because nothing showed on the screen, it was just black, but the sounds from the computer helped to tell me it was connected.
Itunes still didn't recognize the device for whatever reason.
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How do I roll-back to the previous version of Firefox? An auto update occurred and now one of the programs used at the office (ACT! v6.0 SwiftMail) won't run with the browser.

The office I work in uses a very old version of ACT!, an accounting package. This package has a component called SwiftPage, an antiquated email system that enables us to email from the ACT DB. SwiftPage runs via the web browser.
Firefox just did an auto update (that I will have to find out how to turn off) and now SwiftPage won't run as it is not compatible.
Can I "roll-back" my version of Firefox or do I have to uninstall and try to re-install an older version?
HELP!

Try loading and using the add-on from this link: https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/
Many add-ons do in fact work if you force them to run. The procedure to roll-back is given in this article: [[installing previous versions of firefox]]
Unfortunately the official Firefox policy is that you downgrade to 3.6 which is supported for a while longer, and not the now unsupported Firefox 4. If after installing and running the ''add-on compatibility reporter'' you still have problems there are ways around the official policy.
I think it is absurd that Firefox 4 may be used by tens of millions of users one day and a few days later those that upgrade to Firefox 5 should be not only told not to use a now unsupported browser, if they need to revert due to problems, but are actually obstructed in attempts to do so. See also [/questions/840397#answer-205154]

Reader won't run on Firefox

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