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Instant slowdown after updating to Firefox v. 45.0.2

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Just updated to Firefox version 45.0.2, tonight, and changed none of my settings on anything, and the browser is crawling. Anyone else having this problem? I know what we're going to be told, and I'm not really interested in that. What I am interested to see is how many others have had this instant problem.

Just updated to Firefox version 45.0.2, tonight, and changed none of my settings on anything, and the browser is crawling. Anyone else having this problem? I know what we're going to be told, and I'm not really interested in that. What I am interested to see is how many others have had this instant problem.
FredMcD
  • Top 10 Contributor
4259 solutions 59636 answers

Something may have gone wrong with the update.

Something may have gone wrong with the update. *1 '''[http://www.mozilla.org/en-US/firefox/all/ Download Firefox For All languages And Systems]''' {web link} *2 '''[https://support.mozilla.org/en-US/kb/uninstall-firefox-from-your-computer Uninstall Firefox from your computer]''' {web link}<br>DO NOT remove your profiles. *3 After, reboot the computer. Then run the full installer.

Question owner

Do I need to uninstall Firefox? Can't I simple reinstall over the existing one?

Anyway, I have my Flash plugin set to "ask" and it's seems to be choosing when it wants to work when I allow it to play videos at news sites.

Do I need to uninstall Firefox? Can't I simple reinstall over the existing one? Anyway, I have my Flash plugin set to "ask" and it's seems to be choosing when it wants to work when I allow it to play videos at news sites.

Modified by FireFoxFan1

FredMcD
  • Top 10 Contributor
4259 solutions 59636 answers

If there are corrupt files in the program folder, it might not be replaced. The above instructions will prevent this.

If there are corrupt files in the program folder, it might not be replaced. The above instructions will prevent this.

Question owner

FredMcD said

If there are corrupt files in the program folder, it might not be replaced. The above instructions will prevent this.

Okay, so I uninstalled and reinstalled and can tell no difference. To reiterate, prior to the update I had changed no settings.

''FredMcD [[#answer-865276|said]]'' <blockquote> If there are corrupt files in the program folder, it might not be replaced. The above instructions will prevent this. </blockquote> Okay, so I uninstalled and reinstalled and can tell no difference. To reiterate, prior to the update I had changed no settings.
FredMcD
  • Top 10 Contributor
4259 solutions 59636 answers

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. Is the problem still there?


I've called the big guys to help you. Good luck.


Keep this link handy in case you want to use it; Install an older version of Firefox {web link}

Start '''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Firefox in Safe Mode]''' {web Link} by holding down the '''<Shift><br> ''(Mac=Options)'' ''' key, and then starting Firefox. Is the problem still there? --------- I've called the big guys to help you. Good luck. ------- Keep this link handy in case you want to use it; '''[https://support.mozilla.org/en-US/kb/install-older-version-of-firefox Install an older version of Firefox]''' {web link}
beegolden 0 solutions 16 answers

Not only slow, but crashing. Sent crash reports both of which relate to _wcsicmp bp-967d806e-5e1a-472a-8bb3-c58542160416 4/16/2016 6:17 AM bp-6816af11-df29-4eec-a6a4-2ade82160416 4/16/2016 6:04 AM

Bug report 1192060 - crash in _wcsicmp

Hope this info helps to solve the problem. Thanks!

Not only slow, but crashing. Sent crash reports both of which relate to _wcsicmp bp-967d806e-5e1a-472a-8bb3-c58542160416 4/16/2016 6:17 AM bp-6816af11-df29-4eec-a6a4-2ade82160416 4/16/2016 6:04 AM Bug report 1192060 - crash in _wcsicmp Hope this info helps to solve the problem. Thanks!
John99 971 solutions 13138 answers

Contributors & Readers of this thread Please by all means follow this thread or post solutions you expect to work. If you have your own problem please post your own question. Please use /questions/new OR if you feel the question is about the same problem please use this special link You may also wish to vote by clicking the forum box

[I have this problem, too]

Note also Forum rules and guidelines_posting-support-requests

Please note FirefoxFan1 has had other problems with Firefox in previous versions. Some of these problems may be related to setting Firefox to clear History at closedown. Helpdesk staff did look at a previous question thread. That thread also cross links to a still open Firefox bug, and to previous questions.


FirefoxFan1
FireFoxFan1 said

Do I need to uninstall Firefox? Can't I simple reinstall over the existing one?

As Fred explained those are different procedures. Reinstalling over the top of the same version is rarely going to solve anything.

After you have deleted the old program and reinstalled, what happens if you try Firefox in a new clean additional profile do problems go away then.


beegolden Please start your own question. Did you also note that particular Crash Signature was previously associated with Malware

  • Bug 806247 - crash in _wcsicmp with randomly named DLL (malware)

It may be worth running scans with all the tools listed in

'''Contributors & Readers of this thread''' Please by all means follow this thread or post solutions you expect to work. If you have your own problem please post your own question. Please use [/questions/new] OR if you feel the question is about the same problem please use this [https://support.mozilla.org/en-US/questions/new/desktop/fix-problems?search=Firefox+45+worked+ok+until+the+latest+update+Fx45.0.2+is+slow+%5B%2Fquestions%2F1118000%5D%5D#summarize-question special link] You may also wish to vote by clicking the forum box [''I have this problem, too''] Note also [[Forum rules and guidelines#w_posting-support-requests]]_posting-support-requests Please note FirefoxFan1 has had other problems with Firefox in previous versions. Some of these problems may be related to setting Firefox to clear History at closedown. Helpdesk staff did look at a previous question thread. That thread also cross links to a still open Firefox bug, and to previous questions. * See ''Firefox 45 hangs at browser start-up'' [/questions/1113712#answer-855077] --------- '''FirefoxFan1''''' <br>FireFoxFan1 [[#answer-865243|said]]'' <blockquote> Do I need to uninstall Firefox? Can't I simple reinstall over the existing one? </blockquote> As Fred explained those are different procedures. Reinstalling over the top of the same version is rarely going to solve anything. After you have deleted the old program and reinstalled, what happens if you try Firefox in a new clean additional profile do problems go away then. ----------- '''beegolden''' Please start your own question. Did you also note that particular Crash Signature was previously associated with Malware * Bug 806247 - crash in _wcsicmp with randomly named DLL (malware) It may be worth running scans with all the tools listed in * [[Troubleshoot Firefox issues caused by malware]]
beegolden 0 solutions 16 answers

Thanks for your prompt reply. I will create a new thread since it may be a different problem. I did see the previously association with malware, but malwarebytes does not find any problems. all the best!

Thanks for your prompt reply. I will create a new thread since it may be a different problem. I did see the previously association with malware, but malwarebytes does not find any problems. all the best!
cor-el
  • Top 10 Contributor
  • Moderator
17538 solutions 158580 answers

Note that it is possible that your firewall or other security software blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.

See:

Note that it is possible that your firewall or other security software blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program. Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process. See: *https://support.mozilla.org/kb/Server+not+found *https://support.mozilla.org/kb/Firewalls *https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating