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After updating to Firefox 27 all webpages take a few dozen seconds to several minutes to load. When loading a webpage Firefox's status displays "connecting" and the CPU gets maxed out with 95 to 100% of its cycles taking by Firefox.

The computer is older so it is a little slow but Internet Explorer 8 has no trouble opening the webpages and neither do other computers on the LAN so it is not a network issue. I have tried restarting Firefox, disabling add-ons, deleting add-ons, disabling hardware acceleration, restarting the computer, and reinstalling Firefox after wiping every trace of it and its user data from the hard drive and registry.

CPU: AMD Athlon 2800+ 2.08GHz RAM: 1GB OS: Windows XP Home Edition Service Pack 3 32bit

Comments by a forum moderator.
(Modified April 30, 2014 12:11:58 PM BST by John99 ) ~J99
Rather a long thread so I will add some comments here where easily seen.

• For general problems please see my post /questions/985969?page=3#answer-546520
  Updated 30th April 2014 to mention the outstanding known issue (aka the bug with only three votes)
• Just below that jigebren has kindly summarised some workarounds at that particular time and the issues found from this thread /questions/985969?page=3#answer-546599

 Modified June 18, 2014 6:08:41 AM PDT by John99

• Workaround,
  A chrome hack to disable the throbber may resolve the issue as a workaround allowing pages to load quickly. See my post /questions/985969?page=4#answer-595327

Secure Connection Failed

An error occurred during a connection to www.academia.edu. Invalid OCSP signing certificate in OCSP response. (Error code: sec_error_ocsp_invalid_signing_cert)

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem. Alternatively, use the command found in the help menu to report this broken site.

>>I cannot find any location in the help menu to report a broken site - only reporting forgeries. This site is not a forgery. Please advise.

The problem is that whenever I try to open .swf files with firefox from my computer, it ask me to either open it with a third party software or to save it on my computer. It should just use its shock wave flash plugin and play the .swf itself. When I did some search on the internet, I found out I was not the only with this problem, but I couldn't find any solution working for me.

Here are some informations that could help you. - My O.S. is Ubuntu 14.04 and my firefox version is 28.0. - firefox can play swf file from web without any problem. - Here is how I installed the plugin flash player : 1 - Downloaded .tar.gz from http://get.adobe.com/fr/flashplayer/.

                                                                                2 - Followed README instructions.
                                                                                3 - From now on, swf content did play fine within firefox while web browsing.

- I followed the instructions from this page "http://kb.mozillazine.org/File_types_and_download_actions#Resetting_download_actions" without success.

Thanks for reading and trying to help,

Little Nooby

So I'm using Windows 8.1. and Shockwave Flash 13.0.0.206 keeps crashing.

It's up to date, infact it's latest update was today. I've tried uninstalling and reinstalling Firefox, didn't work. I tried uninstalling and reinstalling both Shockwave AND Flash, didn't work. I tried resetting friefox, didn't work.

Messages like "Shockwave flash plugin has crashed, continue or stop plugin" I always click continue but nothing happens.

This has been plauging me for a month now. What do I do?

There used to be a 'Recently Closed Tabs' in the old orange Firefox 28 menu. Now it seems version 29 only has a 'Restore Closed Tabs' menu item in its 'History menu'. There seems to be no option to restore individually closed tabs. I'm always closing a tab by accident, and the old method was very fast and easy.

Another person asked about this, but it seems his only solution was the 'Undo Closed Tabs Button' Add-On: https://support.mozilla.org/en-US/questions/997285?esab=a&as=aaq

In the old menu, you had access to your recent history, 'Clear Recent History', 'Restore Previous Session', 'Recently Closed Tabs', and 'Recently Closed Windows' in one easy to access spot. Now all that is buried, or doesn't seem to exist anymore.

Is there any way to re-configure the new menu to include at least the 'Recently Closed Tab's menu again?

This isn't so much a question as a link to direct others to the correct solution/work-around.

My wife's Mac Mini with OS X 10.6.8 was "auto updated" to Flash Player 13.0. Immediately she began to have issues with the plug-in crashing in Firefox. I worked for about 2 hours deleting and reinstalling FP 13.0. I checked and verified the disc and all the usual "housekeeping tricks to no avail.

Long story short: FP 13.0 doesn't work with Firefox (or apparently I.E.). The work-around is to uninstall FP 13.0 and reinstall FP 12.0. Here is a link to another recent thread to make this happen:

https://support.mozilla.org/en-US/questions/994287

The response is from a forum moderator. And it works.

FYI: if it is your usual practice to let Adobe automatically update itself, you might be better served by selecting the second radio button and have Adobe simply notify you there is an update ready to install. You only get this option when you install Adobe updates. I never let any software "auto update" itself ...and this is a perfect reason why.

I'm running Firefox 28.0.1 on my Verizon LG G2 with Jelly Bean, 4.2.2. For some reason video doesn't play. Any video. It can be vimeo, flash, YouTube... The sound plays, but the spinning ball of doom is the only image. It doesn't seem to be an outright fail since there IS sounds, but why not video? I'm not finding and solution or replicated error online.

I am getting frequent page lock-ups. The page will freeze during loading for several seconds and then I get an error message saying "Unresponsive plugin. Shockwave flash may be busy or it may have stopped responding. You can stop the plugin now, or you can continue to see if the plugin will complete." I click on "stop plugin" and re-enter the page. This will often happen multiple times when loading the same page. I tried doing a complete uninstall of Flash, following the directions here: https://support.mozilla.org/en-US/kb/keep-flash-up-to-date-and-troubleshoot-problems. I then downloaded and re-installed Flash from the Adobe website. I also tried disabling the hardware acceleration and I tried resetting Firefox. So far nothing has worked.

chrome://quick_start/content/index.html

 how delete it from Mozilla? 

I have this in Mozilla every time when I press pluss it start from this My antiviruse checl the computer everything is fine I check Mozilla instilinger it standing as start with clean page nothing in instileger

Hi, I never used Firefox because there was never a way to put the URL/website. I have tried every way and even looked in your support questions where they say to use "CNTR" and "Enter" but no box comes up to enter a site. The only way I can get to a site is if it is in my BookMarks Menu. Why do you make it so difficult for people that are not intensely computer savvy?

Useless8790

When I click anywhere on any web page I happen to have up, another tab will open up. It's not another window, just another tab in the same window. It never loads all the way and it remains just a blank white page. The title thing in the tab spot just says "loading". The URL always has something to do with click tracker in it. This is the most recent one that popped up: http://123srv.com/ads-clicktrack/click/newjump1.do?affiliate=63801&subid=1049789&terms=how%20to%20remove%20pop%20up%20blocker%20shelleyirishdance.com%20shelley%20school%20of%20irish%20dance%20utah%20kristina&ai=k7r7ZxYUPfD2QHmxafUC3FKj_Zpi6ZZyCafgoE4aT5BmsVftS--JZbE7nx_ue8pgiV8REg8qtd4nlCcP_TsuYxqvCPXUr7EEp6T4FLomBS9gE6vTW4h3dLhOG67xkTp42m9H4NkVGLAwLpSGNwMGtsOLZiu-tOhMwKvlVq1khSfnAo4OJ4T6K-l9MiMf6M4VJznqciRN2QAsnn7GuCcMM1IF4g7Nb0a0o_wZtbVVzyEmVq7ekBlN2gq77LjOU6YpOoyGwo7fObZt71K-hNxRzE37g1IBVcXdZZuUZCx3xT0MmZ2DdJwXRWRVDkaqnoziyxf-QxvHoeru19uOKD_7USXpExraoTb0vChyRc1jvxiBLUOXnV2DBGNcIRNtZp4pRYvkO3aJqoZ4lEL7tqTjvSx2oZEhYIsj&version=1.1 It doesn't pop up every time I click on something, but it happens quite frequently and it's really annoying. I also have an ad tab that pops up on the right side of every page I open. It has an options setting to have it never appear on that site again, but I don't want to do that to every single site I go to. There is also an ad search thing that will appear within the text of the page, it's called Mega Search or something. It has a close button but it doesn't go away completely. Ad Blocker Plus is activated and they still show up. The pop-up blocker is activated and they still show up. Is there any way to get rid of this?

I'm having a problem accessing a specific website (fanfiction.net), that I know is secure. Firefox is throwing a security screen at me, but not allowing me to make an exception, like it states in your help sections. I know for a fact that many other people are having the exact same problem. Other web browsers do not have this problem and I can't help but wonder what other sites are having this problem as well. Are your people working on this, or should I start using another browser?

Searching support for two nights has led me to an answer because the help is outdated. I have been unable to find support for Firefox 28.

YouTube videos will not play using Firefox on my new desktop computer. I downloaded Flash player (version 12 something) using Firefox 28 after YouTube told me I needed it. After doing that, videos would play for a few seconds, then a message would appear telling the video would not play with a "Learn More" link. The help was too vague to help.

I have Windows 7 Home Professional, security software, etc.

I have uninstalled the Flash plugin until I get a better handle of what I need to know to better troubleshoot this. YouTube videos will play when I use IE 11 without downloading a plugin.

Thanks you in advance.

Sync used to work great but for some reason stopped working. I use it in 3 computers. One of them it does nothing. The other one it simply errases the data every few days and I have to restore the backup. Another computer I had the HD formated and it sync one folder from my bookmarks and nothing else. Very weird. I´ve done all the usual porcedure of setting up the sync pairing. Any help appreciated.

Every time I click a link to download something, I go to my downloads and see that the download just says, "failed." No reason why, no warning...it just says, "failed." WHY. My internet connection is fine. My version of Firefox is up to date. I don't even get an error message the download just does not happen. Nothing has changed since the last time I was downloading files to now. It isn't just for one particular file either. It's for every single thing I try to download.

Whenever I try to access google, facebook, or other https websites I receive this error message:

"Secure Connection Failed

An error occurred during a connection to www.google.com. SSL received a record that exceeded the maximum permissible length. (Error code: ssl_error_rx_record_too_long)"

The problem briefly went away yesterday but returned again this morning. I've reset my router, reset firefox, cleared caches/cookies, done multiple scans, checked the firewall settings but have come up with nothing.

Whenever I use Facebook dynamic search, Firefox stops responding. This issue also involves writing a new post/comment using the at-sign, which starts dynamic user search.

• Before update from FF27 to FF28 it did not happen. (I use Windows 7.)
• Safe mode does not help.
• Clearing cache and deleting Facebook cookies does not help. Neither new profile nor clean install helps.
• There are no crash reports within Firefox as well as no Windows error logs generated.
• Other browsers on this computer do not have this problem, another computer with FF28 that I use works well. Firefox 28 on this computer with Ubuntu Linux works.

Edit: I got Firefox not responding even at going through conversations (messages). So I can generalize that any operation at Facebook, during which three "waiting" bars appear, can lead to the not-responding state of Firefox.