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cannot get firefox to start, want to find out why

Dear mozilla community, I cannot get firefox to start, and I need help to troubleshoot this. What I already did: remove and reinstall (apt) rename ~/.mozilla to trigge… (read more)

Dear mozilla community,

I cannot get firefox to start, and I need help to troubleshoot this. What I already did:

  • remove and reinstall (apt)
  • rename ~/.mozilla to trigger recreation
  • start using the command line
  • start in safe mode

The only symptoms are <defunct> processes (see screenshot).

I need more information to find out what went wrong. Where can I find this?


Details

  • apt
  • firefox_78.0+build2-0ubuntu0.16.04.1~mt1_amd64.deb
  • Linux Mint 18.3 Sylvia

Asked by eim_92 1 month ago

Answered by FredMcD 1 month ago

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[Tip / Information] When you download an upgrade does the original slow down?

I always use Firefox, but lately it's been acting funky; that is, about every 5-10 seconds it pauses (the cursor spins, so I cannot use it), and even when scrolling it do… (read more)

I always use Firefox, but lately it's been acting funky; that is, about every 5-10 seconds it pauses (the cursor spins, so I cannot use it), and even when scrolling it does that. Driving me insane. So I thought I would try Internet Explorer, and it was fine. So, I went to my downloads, and I noticed two Firefox's. When I clicked on them, one was Firefox, the other Firefox 2. I have no idea why, but I must have been upgraded, or downloaded new version, who knows. Anyway, Firefox was the culprit, and Firefox2 is my old, regular friend. So, if you are having this problem, that might answer it for you.

Asked by soricobob 4 years ago

Answered by cor-el 4 years ago

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How do I stop recurring registry errors from returning and slowing down my computer?

Hi all. Seems like after updates, my computer slows down. It has become so recognizable, I know when the registry errors appear, as my computer performance falls off. … (read more)

Hi all. Seems like after updates, my computer slows down. It has become so recognizable, I know when the registry errors appear, as my computer performance falls off. I must use Reginout Registry cleaner, and CC Cleaner to restore performance. Along with any FireFox updates, my bookmarks have all been deleted many times over. I no longer attempt to re-install, as they continually get deleted, and so simple fix is available to me that I can understand. Thank you.

Asked by a3wayat 1 year ago

Answered by Chris Ilias 1 year ago

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Firefox stops installing and says it was interrupted?

The installation progress bar stops at about 75% and then a message appears saying, ‘Hmm. For some reason, we could not install Firefox. Choose OK to start again’. BUT it… (read more)

The installation progress bar stops at about 75% and then a message appears saying, ‘Hmm. For some reason, we could not install Firefox. Choose OK to start again’. BUT it won’t start again and if I try to download from your website, the whole process happens again. This is very frustrating as many of the websites I use, are linked to Firefox. Please advise.

Asked by Smike47 5 months ago

Answered by cor-el 5 months ago

  • Solved

Firefox: Can't View, Acces or Close Window

Hello. A couple of days ago, I was having problems with Firefox crashing when I opened it--no window would open at all. Prior to that I was having problems for a few hour… (read more)

Hello.

A couple of days ago, I was having problems with Firefox crashing when I opened it--no window would open at all. Prior to that I was having problems for a few hours with Firefox being extremely slow and getting stuck. This is with a MacBook Air with Catalina installed.

I did what I thought was clean reinstall and restored by profile from a backup. I had to try a couple of different times to get it to work. I did wind up losing my previous session.

Things seem to be working fine, but in the Firefox Windows menu it shows a window I can't access, close, etc. The tab open in the window has the title "Firefox protects your privacy automatically." I tried the "Show All Windows" command and only the other window "Google" can be seen. See the two screenshots.

I tried restarting Firefox in Safe Mode, restarting my computer, etc. and that has not helped.

During the reinstallation, I think I remember briefly seeing a different window with a tab from Firefox with this name, but I might be incorrect.

Asked by bob174 2 weeks ago

Answered by bob174 1 week ago

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  • Archived

I have got a computer but i do not no the password to get my updates my version of firefox is old someone sugested reinstall any other ideas

locking as a duplicate of this thread - https://support.mozilla.org/en-US/questions/1041071 ive tried to update always a problem … (read more)

locking as a duplicate of this thread - https://support.mozilla.org/en-US/questions/1041071


ive tried to update always a problem

Asked by alexsdad 5 years ago

Last reply by cor-el 5 years ago

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  • Archived

i have unstalled firefox because it stoped working now there are folder for firefox i cant delete because firefox is running even tho i have uninstalled it ??

fire fox stopped working on my windows 8.1 laptop. every time I tried to open it, it gave an error message saying Firefox can not as an instance of Firefox is already run… (read more)

fire fox stopped working on my windows 8.1 laptop. every time I tried to open it, it gave an error message saying Firefox can not as an instance of Firefox is already running even though there wasn't. so I tried uninstall reinstall and no change. so now have uninstalled again but there are still files and folder for Firefox on my pc, and i can not delete these files because it is already running? even though i have uninstalled?

Asked by firefoxhasstoppedworking 4 years ago

Answered by FredMcD 4 years ago

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How can we get Mozilla to support Firefox, or write Firefox, for Windows 10 phones?

I can find mo Firefox app for Windows 10 phones. I am informed that such does not exist. How can we get Mozilla to support Firefox, or write Firefox, for Windows 10 phone… (read more)

I can find mo Firefox app for Windows 10 phones. I am informed that such does not exist. How can we get Mozilla to support Firefox, or write Firefox, for Windows 10 phones?

Asked by dwat 2 years ago

Answered by Seburo 2 years ago

  • Solved

Blank screen, can not load websites, or view any firefox options (after vc runtime error) how to fix?

How it happened: 1. I installed Anaconda(python3.7) and Visual Studio 2015 (to get the required C++ for TensorFlow) 2. Decided to uninstall Anaconda and Visual Studio 20… (read more)

How it happened: 1. I installed Anaconda(python3.7) and Visual Studio 2015 (to get the required C++ for TensorFlow) 2. Decided to uninstall Anaconda and Visual Studio 2015 and restarted which is when firefox gave the error vcruntime140_1. dll was not found. 3. I downloaded and installed vc_redist.x64 and restarted 4. Firefox does not give an error anymore but no websites appear (just bank screen). I can see the firefox dropdown tab for options, but clicking options does nothing


What I've tried: 1. Uninstalled firefox using an uninstaller that removes residual files 2. Re-installing firefox 3. Running firefox in safemode and clicking 'restore' as well as trying it in safemode


Chrome is working with no issues, but I prefer firefox.

Asked by meiica.resident 4 months ago

Answered by meiica.resident 4 months ago

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  • Archived

current update prevents firefox from starting

After applying the current update, Firefox will not launch. It was set to run as administrator. However, after clicking YES to the Windows10 pop-up prompt to allow Fire… (read more)

After applying the current update, Firefox will not launch. It was set to run as administrator. However, after clicking YES to the Windows10 pop-up prompt to allow Firefox to run as administrator, the Windows 10 pop-up prompt keeps coming up and Firefox will not launch. I cannot uncheck the RUN AS ADMIN from the PROPERTIES window. Help please … ASAP!!

Asked by vj000000 8 months ago

Answered by vj000000 8 months ago

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  • Archived

I can't finish the download.

I've tried to add Firefox to my computer. I entered my email address, a user name and a password. I downloaded Firefox to my iPhone. However, Firefox isn't in my applicat… (read more)

I've tried to add Firefox to my computer. I entered my email address, a user name and a password. I downloaded Firefox to my iPhone. However, Firefox isn't in my applications on my computer, so I can't open it or use it. Please help me complete the download.

Asked by christophergibbs331 1 year ago

Answered by James 1 year ago

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  • Archived

How to open fresh install of Firefox when it tells you there is already a version open?

Hi, I have spent hours dealing with this issue. I hope someone is able to assist me. I ran into some issues with Firefox so I went to reinstall it but I am unable to ope… (read more)

Hi,

I have spent hours dealing with this issue. I hope someone is able to assist me.

I ran into some issues with Firefox so I went to reinstall it but I am unable to open it. I noticed even after uninstalling it it was still showing up when I do control/alt/del. I have tried to close it but it won't close. I have tried almost every option I can find online to force close it.

My issue is when trying to open my new version of Firefox I am told I have a version running and must close it.

I have tried to delete it I don't know how many times.

I am running Windows 10.

Is someone able to assist me? It would greatly be appreciated.

I hope someone can help me as this is getting very frustrating.

Thank you .

Asked by gwshaw46 8 months ago

Answered by gwshaw46 7 months ago

  • Solved

FF takes 2 or more min. to initially load in Win10 1903 (was worse in 1909), loads fast after

Have re-installed FF several times, no improvement in initial startup time. Often have to initiate as admin. 73.0.1 (32-bit) This HP Elitebook 840 G3 running Windows … (read more)

Have re-installed FF several times, no improvement in initial startup time. Often have to initiate as admin.

73.0.1 (32-bit)

This HP Elitebook 840 G3 running Windows 10 v 1903 64-bit. Have to be careful re-installing as FF wants to make my extensions in GERMAN! Are OK now (see attachment). Have test-removed AdGuard, NO difference, so added it back.

NOTE: screenshot is long out-of-date: AdNauseum removed long before this issue started

Asked by xlcrlee 5 months ago

Answered by xlcrlee 5 months ago

  • Solved
  • Archived

Can't start or delete Firefox,

Firefox icons have disappeared from desktop. It will not start from firefox.exe. Trying to delete firefox folder from Program file (x86) in order to reinstall Firefox I … (read more)

Firefox icons have disappeared from desktop. It will not start from firefox.exe. Trying to delete firefox folder from Program file (x86) in order to reinstall Firefox I get 'can't delete error code: 0x80070750'.

Asked by Johnpag 3 years ago

Answered by FredMcD 3 years ago

  • Solved
  • Archived

Firefox 65 stays in memory

I noticed that firefox stays in memory after I close it. In fact, If I open and close firefox 10 times, ten processes are shown in memory, each consuming around 100Mb. I'… (read more)

I noticed that firefox stays in memory after I close it. In fact, If I open and close firefox 10 times, ten processes are shown in memory, each consuming around 100Mb.

I'm using Windows 7 in my corporate computer and I have been using Firefox 65.0.1 x64. I've tried to use it in safe mode (no add-ons) and problem persisted. I uninstalled it, deleted all Mozilla data in AppData and ProgramData and reinstalled it fresh. The problem persisted.

Then I installed the 32-bit version of Firefox and the problem is no more. Is it a bug that has to be fixed or some setting that shoudn't be enabled?

Thank you.

Asked by nelsonwcf 1 year ago

Answered by nelsonwcf 1 year ago

  • Solved

Firefox won't start - Was previously OK

Hi All, I have only recently installed Firefox for a specific purpose, have no plugins installed, just the basic program with about 3 bookmarks, that's it. Was all workin… (read more)

Hi All, I have only recently installed Firefox for a specific purpose, have no plugins installed, just the basic program with about 3 bookmarks, that's it. Was all working OK until yesterday when it just wont boot. I have tried everything I can think of, so far:

Have tried removing (using app cleaner) and re installing - No joy

Tried going to profile manager through terminal - deleted and created profiles but still no joy

Tried deleting app again with app cleaner and reinstalling previous version - no go

Tried starting app in safe mode (shift key) - no go.

Looking for suggestions as I need to use Firefox for just 1 old website that seems to not work on anything else!

I'm running a Macbook pro Early 2015, Mojave 10.14.6

Asked by soundengineer 3 months ago

Answered by soundengineer 3 months ago