Firefox Support Forum

Firefox will crash and say NOT RESPONDING at random. This happened when I updated to 6. I don't want to have to break into my system to make it work when Firefox 5 and under worked fine.

Only the upper left quadrant of the Flash Player screen has content. The rest of the screen is either blank or the original static image. This occurs on YouTube and any website that has Flash Player content. Computer is a Macbook Pro Retina using OSX 10.8.4. I've uninstalled and reinstalled Flash Player (twice) and uninstalled and reinstalled Firefox. The problem doesn't occur when I'm using Safari.

HERE IS THE ANSWER Here is the answer to get TABS BELOW with Firefox V90 . . copy all of this code below the broken line into your - userChrome.css - file and save it. You can modify the 45px in this line if you wish to get an appropriate height . . just experiment with different numbers till you get it right --menubar-height: 45px; /*30px|41px=11px; caption buttons on menubar*/

Also to make the tabs wider or narrower, modify the line which is coded width: 50vw !important;

Finally you must enable - css - in Firefox, by typing about:config into your address bar, and search for toolkit. When all the toolkit options appear change the one which says toolkit.legacyUserProfileCustomizations.stylesheets to TRUE by click the icon in the right hand column. Than close Firefox and reopen, and check how it looks This will enable your - css - file to be read, and interpreted and accepted by the Firefox browser.

-------------------------------------------------------------------

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/* TABS: bottom - Firefox 65 and later - updated for 89+ */
/* https://searchfox.org/mozilla-release/source/browser/themes/shared/tabs.inc.css */
/* https://raw.githubusercontent.com/Aris-t2/CustomCSSforFx/master/classic/css/tabs/tabs_below_navigation_toolbar_fx89.css */
/* https://developer.mozilla.org/en-US/docs/Tools/Browser_Toolbox */

/* ROOT - VARS */
/* you can adjust the CSS variables until it looks correct */
/* you can use the Browser Toolbox to get the toolbar heights */

*|*:root {
  --tab-toolbar-navbar-overlap: 0px !important;

  --tab-min-height: 40px !important;
  --tab-min-width:  60px !important;

  --tab-adjust:  0px; /* adjust tab bar - only for 68-73 */
  --tab-caption: 5px; /* caption buttons on tab bar */
}

/* TAB BAR - below nav-bar */
#navigator-toolbox toolbar:not(#nav-bar):not(#toolbar-menubar) {-moz-box-ordinal-group:10 !important;}
#TabsToolbar {-moz-box-ordinal-group:1000 !important;}

#TabsToolbar {
  display: block !important;
  position: absolute !important;
  bottom: 0 !important;
  width: 50vw !important;
}

#tabbrowser-tabs {
  width: 100vw !important;
}

/* navigator-toolbox - PADDING */
*|*:root:not([chromehidden*="toolbar"]) #navigator-toolbox {
  position: relative !important; /*89+*/
  padding-bottom: calc(var(--tab-min-height) + 1px) !important; /*ADJUST*/
  background-color: var(--toolbar-bgcolor) !important;
}

/* TabsToolbar with menubar and titlebar hidden - rules for Firefox 65-73 */
*|*:root[tabsintitlebar]:not([inFullscreen="true"]):not([sizemode="maximized"]) #toolbar-menubar[autohide="true"] ~
 #TabsToolbar{
  bottom: var(--tab-adjust); /*ADJUST*/
}

/* TABS: height */
#tabbrowser-tabs,
#tabbrowser-tabs > .tabbrowser-arrowscrollbox,
.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {
  min-height: var(--tab-min-height) !important;
  max-height: var(--tab-min-height) !important;
}

#TabsToolbar {
  height: var(--tab-min-height) !important;
  margin-bottom: 1px !important;
  box-shadow: ThreeDShadow 0 -1px inset, -moz-dialog 0 1px !important; /*OPTIONAL*/
  background-color: var(--toolbar-bgcolor) !important;
  color:            var(--toolbar-color) !important;
/*  z-index: 1 !important; */
}

/* indicators *//*
*|*:root[privatebrowsingmode=temporary] .private-browsing-indicator {
  position: absolute !important;
  display: block !important;
  right: 0px !important;
  bottom: 0px !important;
  width: 14px !important;
  pointer-events: none !important;
}
*/
.private-browsing-indicator {display: none !important;}
.accessibility-indicator    {display: none !important;}

/* Indicators - HIDE *//*
*|*:root:not([accessibilitymode])             .accessibility-indicator    {display: none !important}
*|*:root:not([privatebrowsingmode=temporary]) .private-browsing-indicator {display: none !important}
*/

/* Drag Space */
.titlebar-spacer[type="pre-tabs"],
.titlebar-spacer[type="post-tabs"] {
  width: 20px !important;
}

/* Override vertical shifts when moving a tab */
#navigator-toolbox[movingtab] > #titlebar > #TabsToolbar {
  padding-bottom: unset !important;
}

#navigator-toolbox[movingtab] #tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}

#navigator-toolbox[movingtab] > #nav-bar {
  margin-top: unset !important;
}

/* Hide window-controls and caption buttons on Tab Bar */
#TabsToolbar #window-controls {display: none !important;}
#TabsToolbar .titlebar-buttonbox-container {display: none !important;}

I have to turn this feature OFF but FF updated itself to 38.01 and I've had MULTIPLE problems. I see there are solutions however I do NOT have the time to even manipulate hardware acceleration.

BTW, I sent for my user name (which I'd forgotten) 45 minutes ago and it still has not arrived...

I do not even KNOW the version prior to 38.01 but it was stable.

Dell vostra LAPTOP (wireless) XP pro sp3 AVAST! free version (2014.9.0.2021) EPSON WF 545 printer (on the network).

MAIN PROBLEM IS TRYING TO PRINT: (Other programs do print) Printer's s/w U-T-D (Symptom => crashing....)

PLEASE ADVISE on how to obtain older ff versions. Thank you so much!

P.S. I have now spent another 15 minutes looping to try and ask this question.

As above.Started occurring since v20 came out.Seems like many people have this error.

Reverted to v19.Problems occurs as well.

Tried everything ( starting FF in safe mode , creating a new profile, resetting FF, uninstalling and a fresh install, booting in safe mode Windows). Nothing seems to work.

It freezes again and again only to resume normal service only to freeze again. On and on and on. Really frustrating.

Can someone point to me if this FF's problem or is there a problem with my system itself?

My system doesn't seem to freeze when FF isn't running though.

When I right click on an image and choose 'copy image' and then try to paste it into my editing software, all i get is a string of text that is the location of the image as if I had chosen 'copy image location' instead. what gives?

After the latest update to Firefox 4.0 (after RC) all my pinned app tabs completely disappeared. Where did they go? How do I bring them back?

P.S> Every time I try to re-add the app tabs and restart the browser, they disappear again.

I upgraded to v 47.0.2. Verified that I was now on the correct version. Later, It says that there is an update available, and it is v 47.0.2. I check and I'm on v 45.0.1.

This has happened a few times now. At first I thought, I thought I did that, must have been confused. Then, must have been on the other machine.

Now, I'm very sure that I was on v 47.0.2 yesterday. Today It says I'm on v 45.0.1 again. This time it was immediately after FF crashed. I can't verify that was true the other times.

i have Firefox 13 and real player 15 but the download this video option does not work,under extensions browser record plugin is disabled,but if enabled videos do not play in youtube,error occurs,this is great inconvenience,it works well with IE but i prefer Firefox so any help to rectify the matter is appreciated.

On 5/3/19 Firefox suddenly alerted me that it disabled all of my Add-ons stating that "These extensions do not meet current Firefox standards so they have been deactivated."

Immediately below this message, Firefox gives me the option to "Find a Replacement" Add-on.

After going through this process and locating the replacement Add-on, all attempts to download this (or any other Add-on) produce an error message stating "Download failed. Please check your connection."

However, my internet connection is working just fine.

I am running the latest version of Firefox (66.0.3 (64-bit)). And I have tried downloading the Add-on with my anti-virus temporarily disabled (with no success).

Screen captures are attached.

Does anyone know what is causing this issue and how to fix it?

Thanks in advance.

Hello there,

I've had this problem for a long time, and I've done most everything suggested in other forums regarding this matter. I've disabled "disabled protected mode, disabled hardware acceleration, made sure everything is updated, and nothing works. Unfortunately, this makes Firefox so unusable that I've had to switch to another browser for the time being, but it's having it's own issues. Very frustrating! I like Firefox and would like to have it working, but this "shockwave flash plugin" problem has been a persistent problem for the last year.

I've seen many other users who have not been able to fix the problem via the above suggestions, so--what's the verdict? Is there something else I can try?

Cheers

Firefox does not open, but instead gives the error message, "Failed to read the configuration file." It has worked in the past, but not now.

I REINSTALL 10 TIMES SO DON'T TELL ME THAT!!! I'm piss because i need firefox working again so i can finish reseaching my speech in 5 days.

I installed Firefox 16.0.1 yesterday. I was running 15 earlier in the day and it was fine. FF 16 however has suddenly started hanging for about a minute when I try to access certain websites. It unfreezes fine after that minute, no crashes or anything, but it's very irritating. From what I can tell it only seems to do it on pages that use Flash. I've got the latest version installed, and it's made no difference. I tried downgrading to FF 15 and it's still the same. Anyone know what's going on? Thanks, Mark

google toolbar does not work and will not download to firefox 5.0.

Moderator edit - 07-23-2011
The Google Toolbar "will not be supported on Firefox 5 and future versions."
http://googletoolbarhelp.blogspot.com/2011/07/update-on-google-toolbar-for-firefox.html

http://www.google.com/support/toolbar/bin/answer.py?answer=1342452&topic=15356%29

You really need to employ some graphic artists. This is the worst change I have seen in Firefox. The tabs should be BELOW the bookmark toolbar, right above the pages. That's where your eye most easily rests when you're looking for a tab. I looked at "solutions" but I'm not a freaking software engineer!! I just need to get the tabs back down where they were and can't find a solution. If I can't find one I guess I'll have to go back to Safari, which I don't like as well as I have liked Firefox all these years, but this change is just too much.

Also, it's not bad enough to put the tabs at the top (where your eye does not easily travel to!), but now the tabs are white type on a black background. Perhaps fine for 25-year-old eyes, but not for older eyes or visually challenged people in general. And if you have multiple tabs open, which many multitaskers do, you can only see a few letters. I could go on and on about how horrible this new change is, but please take some advice from a retired graphic designer. Black backgrounds with faint light type are not the way to go.

Back to the same old problem I'm afraid. The last update of Firefox actually asked me if I wanted to enable a Trusteer Rapport add on - which I did. Naively I thought that all my previous problems would be over. Now I've got a message telling me that the add on has been disabled because it can't be verified for use with Firefox - but I've been using it for months and Firefox asked me if I wanted to enable it!!!!! Nearly every bank and building society in the UK recommends installing and using Trusteer Rapport in order to improve the safety of one's online banking. As a result I would very much like to get Rapport working again.

My only option at the moment is to stop using Firefox.

After deleting prefs.js file Firefox does not create a new one.

Firefox does not save any of my settings so i tried all the method described in the following articles:

https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save#w_unable-to-save-any-preferences-or-settings

finally I uninstalled FF completely, deleted the FF installation directory and moved my old profile. Reinstalling FF did not help in anyway. After reinstalling, the preferences were still not saved so I deleted the profs.js file. When I start Firefox it does not create a new profs.js file adn of course my setting are still not saved

What can i do? change? I'd rather fix this than install chrome instead...

I want to return to version 28. Version 29's interface is hideous. I installed the add-on which supposedly makes it look like version 28, but it doesn't.

I have downloaded version 28. All I need to know is: Do I uninstall version 29 before installing version 28, or can I install version 28 over version 29 without uninstalling it first? I want to keep all my bookmarks.

I have already turned off automatic updates.

Hello, everyone!

I've filed a bug report here: https://bugzilla.mozilla.org/show_bug.cgi?id=1004476 The problem is that after installing Firefox 29 with no profile at all and installing any addon that requires a browser restart (NoScript for e.g.) Firefox restarts OK, but after closing it and trying to open again I get a message: "Firefox is already running". I can see in the Task Manager that there is already Firefox running in the background. I've found several people complaining about this issue. Here: http://forums.informaction.com/viewtopic.php?f=10&t=19612 And here: http://forums.mozillazine.org/viewtopic.php?f=9&t=2825639

Thank you in advance

Modified May 13, 2014 11:01:46 PM BST by John99

2nd Update. (Comment by a moderator)
Engineers are working on issues that have been identified.
The known issues are problems with Firefox hanging on closedown resulting in Firefox not restarting unless the hung process is killed.

Workaround ensure Firefox is NOT set to clear History on Close down
Use NewButton → Preferences → |Privacy| Firefox will: [Remember History v ]
See also my post downthread /questions/997918?page=2#answer-572501 ~J99

 Modified June 5, 2014 12:26:07 AM BST by John99

3rd Update

A fix is now on the Beta Channel Fx30b8 hopefully in a couple of weeks that will be on everyone's Release of Firefox30.