Firefox is slow

Similar Questions

• Firefox starts slow, but works well in safe mode with all the running addons - why?

  Then... all of a sudden my Firefox (v. 38.0.1) is really laggy, with slow-to-respond buttons, scrolling etc. So I manually disable all addons, but nothing helped. Then I try safe mode and it works very well. Large. So I turn on my addons again one by one, until they are all allowed and it still works fine. My conclusion: it isn't the addons. What is what is the cause? I have updated all my addons and just Silverlight, Flash, Google updater, Shockwave and some others.
  One solution would be for this mode - Safe with addons running - being my default start mode, but I can't work out how to do it. Is no huge problem because I can make Firefox work perfectly, but it's a little bit of your time.
  Any ideas?

  Hi RufusWalker, please see if Firefox is slow after upgrading to Firefox 38 covers and solves your problem.

• Firefox is slow to start, when I select address or homepage it opens automatically. Do reset firefox before but not save the settings so reluctant to do it again.

  When I open firefox my homepage or any address is very slow in opening. But when I select address little whatever it is, it opens automatically. I did a reset on firefox, but it did not spare the words password or settings, so I hesitate to do it again.

  For later use, it is possible to retrieve the settings of the folder on the desktop "old data Firefox:

  • Recovering important data over an old profile

  Please consider these troubleshooting steps:

  • Firefox is slow - how to make it faster

• The fan runs continuously. Firefox unresponsive, slow.

  The fan runs continuously. Firefox unresponsive, slow. While all slow running. Reboot and it's ok for a few seconds and then back to fan works etc...

  Reset the SMC reset management system (SCM) controller on your Mac - Apple Support

• Firefox is slow--particularly unresponsive in private mode

  Firefox is slow to respond. Particularly bad in private mode. Have tried all the recommended fixes. What now...

  What have you tried?

  Start Firefox in Safe Mode to check if one of the extensions (Firefox/tools > Modules > Extensions) or if hardware acceleration is the cause of the problem (switch to the DEFAULT theme: Firefox/tools > Modules > appearance).

  • Do NOT click on the reset button on the startup window Mode safe or make changes.
  • https://support.Mozilla.org/KB/safe+mode
  • https://support.Mozilla.org/KB/troubleshooting+extensions+and+themes

  Create a new profile as a test to see if your profile is the source of the problems.

  See "create a profile":

  • https://support.Mozilla.org/KB/Profile-Manager-create-and-remove-Firefox-profiles
  • http://KB.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

  If the new profile works then you can transfer files from a profile in the new profile, but make sure not to copy corrupted files.

  • http://KB.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

• Firefox has slow start up & I have the latest version. IE, Chrome, AOL will begin immediately. Firefox takes up to 10 minutes.

  Firefox has slow start up & I have the latest version. IE, Chrome, AOL will begin immediately. Firefox takes up to 10 minutes.

  This has happened

  Each time Firefox opened

  == update to 3.6

  You may need to use questions Troubleshoot Firefox in Safe Mode (click on "Safe Mode" and reading) to locate the problem. Firefox Safe mode is a diagnostic mode that disables Extensions and some other features of Firefox. If you are using a theme, place you in the DEFAULT theme: Tools > Modules > Themes before start Safe Mode. When you enter Safe Mode, do not check all the items in the window, just click "continue mode without failure." A test to see if the problem you are experiencing is fixed.

  See:
  Troubleshoot extensions, themes, and issues of hardware acceleration to resolve common problems of Firefox
  Solve problems with plugins like Flash or Java to solve the common problems of Firefox
  Troubleshoot and diagnose problems in Firefox

  If the problem does not occur in mode without failure, then disable all your Extensions and Plug-ins, and then try to find out who is causing by allowing both the problem reappears. You MUST close and restart Firefox after EACH change via file > restart Firefox (on Mac: Firefox > Quit). You can use 'Disable all add-ons' on the start safe mode window.

• Can't access Google and firefox is slow

  I'm currently under Firefox 42.0. I'm unable to access google.com and Firefox runs very slow time (for example about 20 seconds to load a page). Using internet explore I can access google.com and load web pages in seconds. When I try to access google.com , I get the following message "this connection is untrusted" without option to get around. I restarted Firefox in safe mode with disabled and also refreshed Firefox Add-ons, but I still have the issue. I don't have an antivirus application installed. After the update, I should add an exception to use yahoo.com (i.e., I understand that the risks add exception).

  "c. uninstall Firefox from the Windows Control Panel go to"start "->" run"and type %appdata%\microsoft\windows\sendto then find the folder called mozilla and delete."

  Step c. worked and now I can access google.com , and Firefox is no longer slow.

  Yes, before I uninstall Firefox via the control panel. This time, I uninstalled via the Control Panel, removed the "mozilla" folder and restarted my computer.

• Firefox has slowed to a crawl after updating Norton Security.

  Updated to the latest version of Norton. FF hung up (msg "not responding") whenever a new tab was opened. Refreshed ff.; now the tabs work fine, but FF is extremely slow. Pages that allows to takt a second or less load now take two to ten minutes.

  For problems with the file places.sqlite (bookmarks, historical) database, you can check in the Firefox profile folder.

  • Maintenance: https://addons.mozilla.org/firefox/addon/places-maintenance/

  If the extension of Maintenance of places cannot repair the database places.sqlite file remove all places.sqlite files in the Firefox profile folder to rebuild the database places.sqlite latest JSON Firefox backup in the folder bookmarkbackups.

  • http://KB.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
  • https://support.Mozilla.org/KB/bookmarks+not+saved#w_fix-the-bookmarks-file

  You can check for problems with the sessionstore.js file in the Firefox profile folder that stores the session data.
  When sessionstore.js is deleted, you lose App Tabs and groups of tabs and tabs open and you will have to recreate them, so possibly make a note or bookmarks.

  You can use this button to go to the current Firefox profile folder:

  • Help > troubleshooting information > profile directory: see file (Linux: open the directory;) Mac: View in the Finder)
  • http://KB.mozillazine.org/Profile_folder_-_Firefox

• Execution of Lolipop 5.1.1 on Nokia N1 (without game store). Firefox is slow and hangs very often! Why?

  Hello! I use Firefox on Nokia N1 (5.1.1) without installed game store. The browser behaves really erratic: crashes unexpectedly, does not start sometimes and its slow. New installation or remove all data help only temporary. However, its super annoying since all bookmarks and plugins have disappeared.

  Help, please! Thank you!
  Mike

  Please try this version of Firefox called Aurora. He has a fix for a common accident on x 86 devices. Your willing N1 to an Intel x 86 processor.

  https://FTP.Mozilla.org/pub/mozilla.org/Mobile/nightly/latest-Mozilla-Aurora-Android-x86/Fennec-43.0a2.multi.Android-i386.APK

• everything about firefox is slow and jerky since 38.0.1 update, how to fix

  Cannot play games, access e-mail, navigation & typing - that's all jerky and very slow. How can I fix it? I do not understand technical terms if you need basic instructions "click on this ' please. Can someone help me? I have windows 7 and all my updates are done automatically. I use my laptop - I don't know how it works!

  The other issue you may encounter is due to hardware acceleration?

  If you try the Mode without failure of Firefox, it will disable hardware acceleration and Add ons temporarily and you can see if they contribute to the issue. If it was indeed hardware acceleration will see the update below.

  Just as an update, after the study of the problems of General hardware acceleration there an update out today which should solve this problem. The new version will be 38.0.5 on beta on June 2. Thank you for your patience, please report if there are additional problems.

  (* Please note the update in this post to change the channel of output also subject to changes)

• UI of Firefox is slow by typing or selecting the text (after update 33.0)

  After the 33.0 update, I noticed that typing a backspace in any area on a Web page or even in the Firefox address bar is slow to echo, on a lag of 1 second. Also, by selecting the text typed (to remove a TI, etc.) by a click-and - drag quick selects the entire, but when I click in the dialog box to deselect, the part which has not been posted as selected initially, is selected for a moment before the string whole hilite selection disappears.

  What makes the browser very cumbersome to use.

  This seems to be new to 33.0. I tried to reset Firefox, but it does not solve the problem. No problem in IE 11.0, so I do not think that the malware. I have also to keep all s/w and run avast/zonealarm for safety. I've never had an infection of malicious software on this machine. Win7 Home Premium 64-bit, 8 GB of RAM. The use of resources is low, so not out of process control.

  I have request the latest Microsoft "Patch Tuesday" updates 15/10, the same day that I updated to Firefox. This can complicate the diagnosis. But even once, IE was not affected, then, how the different Firefox UI for basic keyboard/screen I/O?

  If there is an easy way to "downgrade" to the 32.0.3 prior revision, I could try to confirm. Help, please!

  Start Firefox in Safe Mode to check if one of the extensions (Firefox/tools > Modules > Extensions) or if hardware acceleration is the cause of the problem.

  • Put yourself in the DEFAULT theme: Firefox/tools > Modules > appearance
  • Do NOT click on the reset button on the startup window Mode safe
  • https://support.Mozilla.org/KB/safe+mode
  • https://support.Mozilla.org/KB/troubleshooting+extensions+and+themes

  You can check for problems with the sessionstore.js and sessionstore.bak files in the profile folder of Firefox that store session data.

  • Help > troubleshooting information > profile directory: see file (Linux: open the directory;) Mac: View in the Finder)
  • http://KB.mozillazine.org/Profile_folder_-_Firefox
  • http://KB.mozillazine.org/Multiple_profile_files_created

  Delete sessionstore.js will cause App Tabs and groups of tabs open and closed tabs (back) to get lost and you will have to re-create them (take note or bookmarks if possible).

• I have a message at the bottom of the window saying Firefox seems slow to start with a few buttons to push. This reminds me of PHishing, is it? If so, how get rid of?

  The message is at the bottom of the window and said "Mozilla firefox seems to slow down... to start.
  Teh buttons are
  Find out how to speed it up

  and
  Don't tell me again

  I am always wary of these messages

  Please also update Firefox 28. Thank you!

• My Firefox is slow super how to fix?

  I have tried to reset Firefox & close other apps, but my Firefox is really slow since the update to the latest version yesterday running. Solution?

  Try disabling IPv6 (also check other possible causes).

  • http://KB.mozillazine.org/Error_loading_websites#IPv6

  You can also try to reset (power off / on) of the router.

• Firefox running slow, even after the reset AND reinstalled

  For the last several days that Firefox has worked really slow. When I open a new window it takes about 20-30 seconds to open an or if I try to load a site with flash (say for example of youtube) it takes time to load the site and you can not click anything, like back, address bar or even the X to close the window.

  I have scanned for viruses and found nothing. I thought it was my computer when Firefox started to slow down, but I opened Opera and Saferi to see what it looked like and they are fine. Works very well. If I restart the computer, Firefox works fine for say 2 hours before you start to slow down slowly again over time (about 5 hours later it is uber slow!). I also reset Firefox that again gave the same result as the computer restarts, very well for a few hours before starting to slow down again. Reinstalled Firefox, but again it's very well for a few hours.

  I don't know what to do. Firefox is my main browser, but I can't continue to use it like that because it takes forever to do anything.

  Create a new profile as a test to see if your profile is the source of the problems.
  See "create a profile":

  • https://support.Mozilla.org/KB/Profile-Manager-create-and-remove-Firefox-profiles
  • http://KB.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

  Profile backup and restore

  • http://KB.mozillazine.org/Profile_backup
  • https://support.Mozilla.org/en-us/KB/back-and-restore-information-Firefox-profiles
  • http://KB.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

• Firefox very slow, slow and unresponsive on Windows 8.1

  Basically, everything is very slow and each action takes a long time to complete - tabs, switching takes about half a second to a full second (5 seconds if there is another tab currently loading / refreshing), by clicking the Center button of the mouse takes more time, about half a second to a second for the exactly scrolling of arrows is displayed same thing with regularly by clicking on the scroll on the right, Firefox bar pretty much freezes for about a full second before reacting to the click.

  I tried to run Firefox with addons disabled, which did not help, which I did not know that he don't would be not since this problem started before I even had the addons - pretty good the second, I installed Firefox.
  I have Firefox running on an SSD card and a new installation of Windows 8.1. I tried the two Aurora and nightly (currently using every night), both are just as slow.

  I have not tried to reset, because once again, the question was already there during my first installation of Firefox.

  Figured out what the problem is - it is a software of DisplayFusion I use to support multiple monitors which is causing the problem. I'll just get an alternative until (if ever) the question ceases to exist.

  Thanks for the help.