The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

1. Go to Firefox > Help > Troubleshooting Information.
2. Click the "Reset Firefox" button.
3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
4. Firefox will open with all factory defaults applied.

Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Tyler - Thanks for your reply. I was just doing this as you messaged me, but wanted to save it as a "last resort." It has helped clarify the problem, and I'd really appreciate any input you can offer.

I can trace the problem to Firefox's cookie management and, specifically, the Options > Privacy > History tab. One feature I have always liked is that I can control which cookies I allow and for how long. My default setting for keeping cookies has been to "Ask me every time." When I reset Firefox, this was set to "they expire."

If I load the trouble pages with the "they expire" setting, everything works fine. If I switch to my preferred setting (and reload the page so it takes effect) - "ask me every time" - the sites break as in the original post.

At this point there are no add-ons, extensions, etc. It is vanilla Firefox. Do you have any ideas how I can solve this problem and use my preferred method of cookie management? Thanks!

Well, I don't think the problem can be the "Ask me every time" option, but choosing Block in the dialog... no?

You should allow the FB-related domains (facebook.com, facebook.net, fbcdn.net) at least for the duration of the session. You can edit your saved cookie permissions here:

orange Firefox button or classic Tools menu > Options > Privacy > Exceptions

I'd think the same thing, but I've allowed them whenever prompted (I've also double checked in the cookies manager). It doesn't matter.

It is literally like flipping a switch. If I am on Facebook with the default setting ("they expire"), everything works. Switch it to "ask me every time," reload the page, and boom, its broken again. Weird, I know. And frustrating.

I think I see the problem. When Firefox prompts you to approve cookies on Facebook, it displays www.facebook.com. However, apparently that is not enough to cover all of the cookies on the site and Firefox is not prompting for the more general domain facebook.com. If I go into the Exceptions dialog and manually create an entry for facebook.com (Allow for Session in my case), then the setting works. Not sure why Firefox isn't prompting for all cookies. ??

@jscher2000 - Thank you so much! That worked perfectly. I'm wondering if it isn't because I'm forcing Facebook to browse with the secure connection (https://) instead of the default, but no matter. I made an exception like you suggested (for both Facebook and Battlelog) and everything is right as rain. Many thanks!

Echoing much thanks to jscher2000! I was having the same problem, and this fixed it. I'm curious as to what changed to suddenly cause this problem?

Where's the history tab?

To see all history and cookie setting you need to select this:

• Tools > Options > Privacy > History: Firefox will: "Use custom settings for history"

• https://support.mozilla.org/kb/Options+window+-+Privacy+panel

Hello, i have the same problem, i tried to add facebook.com to exceptions but it still don't work, i tried to reinstall firefox, desactivate and activate all modules.. i don't know how to resolve this problem ? Thanks for help

dreamnet:

What kind of problems do you have?

If it works in Private Browsing mode then that suggests a cookie or cache issue. If text isn't showing properly then you may have other problems (zoom or default font size too big).

• http://kb.mozillazine.org/Website_colors_are_wrong
• http://kb.mozillazine.org/Websites_look_wrong

Can you attach a screenshot?

• http://en.wikipedia.org/wiki/Screenshot
• https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem

Use a compressed image type like PNG or JPG to save the screenshot.

Thank you for your answer, but i think it doesn"t need a screenshot, the problem is when i click on the chat of facebook or on message, friend and notification logo, it shows nothing, and it's the same problem when i try to upload a file in a storage site (med..fire) after selecting a file when i click on upload nothing happens, it also doesn't work with private navigation. I usually resolve my problems with no or just some searches, but know i don't see to resolve this, just a few days ago all works perfectly!. PS : this problem seems to disappear on firefox 3 but not on 10,15 and16

Hi dreamnet, I'm not sure you have the same problem as the original poster in this thread. Would you mind starting a new question? The forum software will take you through a number of suggestions. If none help, please scroll down past the suggestions to continue posting.

https://support.mozilla.org/en-US/questions/new/desktop/d1

With respect to uploading files, some sites use regular HTML controls (like the "Add images" control below this box and others use Flash. If you have noticed any problems with Flash on other sites, that could be related.

Hi, i finally resolved the problem, it was cause by the module http://controledescripts.mozdev.org/ i have blocked window.prompt/alert.. and some fonctions and when i have disactivated the module the problem persists, so i have reactivated the module and choose to "Allow" those javascript fonctions because i can"t delete them ( they come back automaticly ). Thank you for your answers all, dreamnet.