Firefox Support Forum

Hello,

I apologize in advance for my low level in English, I am a French internet user who has encountered a problem since this morning. I have Mozilla Firefox on Windows 10. So far, it has worked perfectly. However, I could see today, by turning on my computer that I could no longer access Mozilla Firefox. Indeed, when I click on it, I encounter this error message:

Windows did not find c: \ program files \ mozilla firefox \ firefox.exe. verify that you entered the correct name and try again

I do not understand why I have this message. When I go to C: \ Program files \ mozilla firefox I do have a "firefox" icon (exe application). but I clicked on it and it doesn't work. I would like to inform that by using avast, avast updated me mozilla firefox ... I repeatedly uninstall and reinstall mozilla firefox; I even turned off, turn on, and turn on the computer several times but nothing to do, it does not work.

Can you help me see more clearly please?

Thanks in advance.

I just received my new MacBook Air and am trying to use the synch to synch the above-referenced items from my old MacBook Pro. I am NOT synching to a phone. Each time I choose to not continue w/a QR code or SMS message, I'm taken to a screen about FF Monitor and am never able to enter "another device", which is where I began, "Connect another device" - any assistance or work around will be gladly appreciated. Thank you in advance, DD

Hi ---- Wondering if anyone can help with this. Every time I open Firefox (my default browser), I get a spinning wheel, the browser doesn't load and my whole system crashes.

I have tried reinstalling Firefox - same problem occurs. Anyone got any tips? I'm running a mac on El Capitan and have been for a while with no browser problems.

All I'd like to know is how to completely disable the ability of tabs crashing for any reason at all, permanently. I'd very seriously would rather the computer freeze or risk hardware damage, whatever pref(s) listed and unlisted I need to enable or disable I can put in lock file or anything. -Thanks!

After a successful 2-way TLS handshake, I was able to browse my website for 1-2 times, subsequent requests failed with the "Secure Connection Failed" message and there is no error code to understand what the error is. In Network tab, it showed that Firefox didn't send the request to the web server (request_not_make_to_webserver.png). In Console tab, there was a message of "This error page has no error code in its security info" (console_show_no_error_code_msg.png). There is no issue to connect to my website using Chrome.

Did anyone face this issue before? What could be the cause for such problem?

Thanks, Tuan

Have updated to FF 79 yesterday on a private computer (with admin privileges on my user).

Ever since, the browser options changed specifically:

1) In Help > About I cannot trigger an update anymore as the button is replaced by the message "Updates are deactivated by system administrator"

2) In Settings it reads "The browser is administrated by your organization".

Never seen this.

On another computer with the same antivirus software FF updated to 79, no trouble. On yet another machine with Win Defender only also no trouble after update.

Malware & antivirus scans both come up empty. Removed and re-installed FF already to no avail.

On the troubled machine some big Win Update is not yet made available by Microsoft...

Somebody knows what is going on?

Every time I download a new release of Firefox (win64 german), I check the downloaded file at virustotal and check the hashes published under http://releases.mozilla.org/pub/firefox/releases/<Version>, e.g. http://releases.mozilla.org/pub/firefox/releases/78.0.1/SHA256SUMS Up until release 77.0 the hashes matched but for 77.0.1 and also the current release 78.0.1 the hashes do not match, neither SHA256 nor SHA512. For "win64/de/Firefox Setup 78.0.1.exe" the SHA256 hash should be 56cff68e3f0cb76a6404d675f7e1bacc40ebaba7bbb5cadcb4950378656ab0a6 but the calculated hash is 8e69755f257aba44b6bbe5079e17f3bff8b62ddc27de9e1c479686e9ad871dfb When checking at virustotal, the file is recognized as scanned before and the displayed hash is the one I calculated, so at least my downloaded file is equal to the file other persons downloaded. Could it be that since v77.0.1 the published hashes are incorrect?

Pretty much what the title says, it only happens on facebook, all other sites are normal.

I now this is a duplicate of this: https://support.mozilla.org/en-US/questions/982939

But the thread has been archived and the solution link ( https://www.facebook.com/help/community/question/?id=564607316896327 ) is broken.

Any help would be greatly appreciated.

Hi,

I was refraining myself to do any update of Firefox on Windows 10 PC for several months but yesterday I was so annoyed by pop up messages requesting me to update that I gave up and proceed with update... Then disaster happened: everything is lost. All my customized settings, all bookmarks that my life depend on, everything is lost. Please can someone help me survive...

I checked for FirefoxOLD folder if there is one (e.g. on Desktop) anywhere on hard drive of my PC but there isn't. All self done solutions I tried but failed produced around 15+ additional profiles because I had to delete ( * ) Profiles INI single file otherwise Firefox couldn't be opened due to error message. When I deleted INI, I was able to open firefox with LOST extremely important data. Every opening produced I believe 3 new profiles.

( * ) I still have them in Recycle bin.

I went to about:profiles and there are only two: the one being used (lost data) and one more. When I open "one more" profile in different browsers all my data is remaining to be gone.

Currently in total are 18 profiles in C:\Users\USERNAME\AppData\Roaming\Mozilla\Firefox\Profiles folder. At least 15 of them are from failed solution attempts. The thing that worries me the most is the single profile, out of other 3, that should had my data available. I used it as the only folder in "Profiles" folder. Then I used to run Firefox and data is missing even there. This particular profile that brought me the most of hopes is NOT available via about:configs and the thing that worried me the most inside the folder of particular profile that I guess should have the data is the fact that the folder is almost entirely empty. Only two files inside: search-metadata.json and times.json

Can someone please help me get my data back?

Please I had really important data but cannot recover it on my own :'-( oh my god...

Hi I support young people ( aged 7-11) with Dyslexia. they all use Firefox to log in to their lessons. It automatically recognises them and it is a system they are familiar with. All of the lap tops up grade to the latest system automatically. One of them does not work on the new version. The students get a message which says version 78.0.2 is not compatible with 78.0.1 It is a Windows system. This is really distressing for the students using this lap top. They blame themselves for the problems and itis having an affect on their confidence. Can I revert it back to the older version ? and if so how? I really would appreciate some help as my wee students are upset and i don't know how to help.

Caroline

Hi! I've switched to Firefox quite recently and I love pretty much everything about the browser. The only problem I've been experiencing is that whenever I try to print a page the whole browser crashes. I've tried removing all the settings for printing in prefs.js but that didn't seem to help in any way and the crashes don't turn up in the about:crashes tab. Has anyone else been experiencing this and perhaps knows how to fix it?

Here is the background information so you know a bit about this ongoing troubleshooting project:

Frequent Crashes - Follow-up Eve Jul 23, 2020, 2:45:58 AM

It sounds like a double-whammy of a Firefox issue and then an additional Windows issue where you can't run accessibility settings in Windows Safe Mode? Looking into the bug that this is potentially attached to I found this information ( https://bugzilla.mozilla.org/show_bug.cgi?id=1652912 ) : Having NS_FaultTolerantHeap::APIHook_RtlFreeHeap in the crashing stack means Fault Tolerant Heap (= FTH) has been enabled for firefox.exe. FTH is automatically activated when Windows OS detects some heap-related issue which it thinks can be mitigated by FTH such as double free. This crash means Firefox crashed due to some heap related issue earlier, which enabled FTH, but probably FTH was not be able to mitigate the heap issue. First of all, can you check FTH is activated for firefox.exe through event viewer? 1. Open Event Viewer from Start menu (or, run eventvwr from command prompt) 2. In the left pane of Event Viewer, go to Applications and Services Logs > Microsoft > Windows > Fault-Tolerant-Heap > Operational 3. If FTH is activated for firefox.exe, you'll find Event ID 1003 as the attached screenshot. If FTH is activated, instead of looking into this crash, we need to investigate the original heap issue without FTH. You can disable FTH by stopping Diagnostic Policy Service. Can you do the following steps to send us a crash report without FTH? 1. Open Command prompt as Administrator 2. Run "net stop dps" 3. Open Firefox and follow the steps causing the tab crash 4. Send a crash report 5. Go back to the command prompt and run "net start dps" to re-enable the service This may be caused by a third-party application. Given that 99.26% of the crashes of this signature involves AccessibleHandler.dll, do you use a screen reader or some accessibility related application? If it is related to a screen reader, you may have to use Chrome for the time being until you can get more assistance :(

You gave me this instruction: 2. In the left pane of Event Viewer, go to Applications and Services Logs > Microsoft > Windows > Fault-Tolerant-Heap > Operational Two issues I had: On a screen reader, I have no idea which is "left column" and "right column" since to a large extent a screen reader is rather "divorced" from the physical layout that sighted people see on the screen (I am totally blind and don't even have a monitor nor mouse running on this machine). Then, I found application and services log... but I did not find anywhere Microsoft > Windows > Fault-Tolerant-Heap > Operational I had Microsoft > and several things with Windows but nothing about fault tolerance. When I went on to your second request: 1. Open Command prompt as Administrator 2. Run "net stop dps" 3. Open Firefox and follow the steps causing the tab crash 4. Send a crash report 5. Go back to the command prompt and run "net start dps" to re-enable the service

When I did step 2 as Administrator as you asked, I got the error message that Windows cannot find "net stop dps . I tried the command both with and without the quotation marks and got the same error message. Please remember that the Windows 10 on my computer is the HOME version, not the Windows PROFESSIONAL VERSION with all the security stuff found on that version and used in office environments. From a practical standpoint, unless you folk have another suggestion, it appears that i will likely have to GIVE UP ON FIREFOX (remembering from your message that most of these particular crashes result from an issue with Firefox working with screen readers) until a time comes when Firefox might be updated to resolve issues between Firefox and screen readers. I believe I will contact Vispero, the publisher of JAWS, to let them know about the problem I am having with all these crashes in the current version of Firefox. Of course, I am open to try any other suggestions to further diagnose the problem, if I can carry them out with speech and NO SIGHTED HELP.

Hi,

I'm a web designer, I love firefox for develop my projects, one of the things that I love is that when i change a property value and I reload the page (F5) file css are ever updated,

Only in some cases with .js files I had to use ctrl+F5,

but now every modify I do then I hat to use ctrl+F5, why??

I extremely triggered of this extremely incomfort Mozilla support. Recently I log in in f****n@ya.ru account and wrote a 2 massages to one of users. Now I want to log in and see are my massages answered and see THAT: "The email used with this Firefox Account is already linked in another profile.", "This account is not active. Please contact an administrator if you believe this is an error". contact the administrator - WHERE is administrator email or ANYTHING that give me a possibility to contact him?! In any non-extremely uncomfort site there's will be a link in "contact an administrator" for I'm not be forced to turn the world upside down in search of this administrator. But there's no link. Ok, I find "contact" button, see standart "contact" page for big companies with large text instead of 1-3 emails, Ctrl+F "administrator" - no matches. WHO should I contact if I have this problem, why this site so intricate?!! Why it's saying "CONTACT administrator" without GIVING CONTACTS of administrator?!! Why can't I log in my account?!!

Open Firefox. Verify no cookies. Clear any cookies if they exist.

Then open a single private window.

Go to tripadvisor.com (happens with some other sites but only a few).

Browse a few pages.

Close the private Window. No private windows/Container tabs are open.

All tripadvisor cookies should be cleared but they are not.

Verified by Cookie Quick Manager.

Why and how does tripadvisor manage to keep cookies on my system.

'my computer crashes (defective hard drive); I lost all my favorites! CAN I RECUPERER ??? How??? in advance thank you for reply.... with solution...!! ' 12juillet2020

The Doki Doki Live site won't load any live stream. I've tried Chrome, the old Edge, the new Edge and Brave. They all load everything with no problem, but that particular site on Firefox won't load up the live broadcasts, but will load a video there. I've refreshed the browser, uninstalled and reinstalled it and nothing works. I am using the latest version of 78.0.2

I am unable to login to firefox accounts .

I have the correct Email and Password, but it keeps asking me for the conformation code sent to the email for login, but i dont have access to the Email as the password is saved in sync server.

I mean the Lockwise Sync server. No i don't have any device currently logged in to Sync. I recently Formatted my PC, So all files for password manager were lost(I synced the logins to the server before formatting my pc hoping that the Login id and Password for the Accounts would be enough to retrieve them ) and am trying to retrieve the logins.

No luck with the login links i can login but cannot change anything in the settings, it says :

" NOTE: Before you can view or make changes to this section, you will need to verify your email address. "

So any way i try it is asking for the conformation code sent to my Email address Whose password is stuck in my sync server.

So its like

Need Help ASAP Please.

I have just set up a Master Password on my iMac as I am concerned that anyone opening Firefox on my computer has access to my passwords. But it only worked once and now does not work even though I thought I was being careful to record the new password. How can I reset it or recover it or cancel it? I can still see logins and passwords on my iPad but concerned that the master password will sync with my iMac and not sure how to stop this. My iMac is 2009 and running OS X El Capitan (10.11.6)