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Firefox browser is not launching on my pc

Suddenly on my PC the icon of Firefox turned white on both desktop and taskbar. And whenever I try to open Firefox, it says, "The file or directory is corrupted and unrea… (read more)

Suddenly on my PC the icon of Firefox turned white on both desktop and taskbar. And whenever I try to open Firefox, it says, "The file or directory is corrupted and unreadable." And I didn't make any changes myself. So far it was fine. Now what can/should I do?

Asked by michealwd8 1 month ago

Last reply by Jatin Yt 1 month ago

MacOS update resulted in Mozilla/Firefox glitch

I and my wife both use Macbook Pros. Hers is "old" (2018), mine is "new" (2023). On Sunday Jan 7 2024 I updated Mac OS on her "old" laptop. The update summary said, "This… (read more)

I and my wife both use Macbook Pros. Hers is "old" (2018), mine is "new" (2023). On Sunday Jan 7 2024 I updated Mac OS on her "old" laptop. The update summary said, "This request came from Firefox on Mac OS X 10.15." (see screenshot) and recommended security changes. We were not using Mac OS X before the update. The "old" laptop is working normally as far as I see. I am writing this request from the "new" laptop. What's going on? Is the "old" laptop compromised? If so, what do I need to do? Thanks!

Asked by glasslab 5 months ago

Last reply by cor-el 5 months ago

Emailed Links Open Blank Pages

For the past week or two, all links sent to me via email open to blank pages. In other words, I click a link in an email and am taken to a completely white, blank page i… (read more)

For the past week or two, all links sent to me via email open to blank pages. In other words, I click a link in an email and am taken to a completely white, blank page in a new tab of my Firefox browser. I've tried clearing my cache but that didn't resolve the issue. I figure it's time to ask for some help with this strange, frustrating issue so that I can open links emailed to me. I've attached a screenshot of one of the emails this happens with. It's been happening with a company called Geru as well as the one in the screenshot, but I've found that links from the Epoch Times for instance work fine. Please advise, thanks!

Asked by JM 6 months ago

Last reply by cor-el 6 months ago

Can't access any Google related site from time to time

Around August of last year I started getting this issue where I am unable to reach any Google related site like Youtube, Gmail and such. It drove me crazy and at some poi… (read more)

Around August of last year I started getting this issue where I am unable to reach any Google related site like Youtube, Gmail and such. It drove me crazy and at some point I started using other browsers because of this issue. Sometimes my request goes through and sometimes its blocked. I have disabled my anti-virus, stopped all plugins, but all my attempts at fixing this were in vain.

Asked by tonyG 5 months ago

Last reply by jonzn4SUSE 5 months ago

After playing a Steam game, my sound within Firefox no longer works. It works in other browsers.

Hi and thank you for helping. After playing a Steam game (which would take over in concerns with sounds playing in other things like Youtube) my sound no longer works. … (read more)

Hi and thank you for helping. After playing a Steam game (which would take over in concerns with sounds playing in other things like Youtube) my sound no longer works. I've tried troubleshooting it and nothing works. I have, of course, rebooted several times, reinstalled sound drivers, uninstalled and reinstalled Firefox. Youtube sound works in other browsers but you're my favorite! : )

Asked by Walther Forstmann 5 months ago

Last reply by zeroknight 5 months ago

Netflix, Hulu, HBO Max will not play any media, YouTube loading is very long, videos are choppy, quality never above 360p

For about 3 weeks, I haven't been able to get any media on Hulu, HBO Max, or Netflix to play. The trailers run just fine, but the movies/shows themselves will not play. I… (read more)

For about 3 weeks, I haven't been able to get any media on Hulu, HBO Max, or Netflix to play. The trailers run just fine, but the movies/shows themselves will not play. I get no error message, no loading icon, nothing, just a blank black screen. When I turn my adblocker off, sometimes ads will play, but then the blank black screen returns with no explanation. Netflix will give me the error code F7351, but that error code does not show up when I search for it in Netflix's help menu (I have added screenshots of the error message and the lack of search results). I have downloaded the Hulu app which does play, but I would like to rule out all possible solutions before resorting to downloading separate apps for each of these streaming services. In my browser, Hulu will show a loading bar for about 30 seconds before the screen just goes black, and the options to full screen or minimize work while the option to exit the media player does not (screenshot included). HBO Max just goes to a black screen with different watching options to the side.

At the same time as this happened, YouTube stopped offering to play videos at a quality higher than 720p, and all videos looks as though they are playing at 360p even when they are set to 720p. Loading times for starting new videos or redirecting back to the homepage are dreadfully long now, the audio and video skips or pauses whenever I unpause a video and sometimes when I enter or exit fullscreen.

I have tried turning off all of my extensions (DuckDuckGo, AdBlocker Ultimate, HTTPS Everywhere, uBlock Origin, Unhook, YouTube Search Fixer), clearing my cookie cache, emptying my device storage, restarting my laptop, everything I could think of and nothing has worked. I've toggled off and on DRM content, turned off enhanced tracking permissions, allowed cookies, connected to different networks, even switched browsers, and none of it has helped. I'm not sure what else to do, and as I said above, installing the apps for each of these services is my last resort, as all of the websites were working perfectly fine at the beginning of December.

Asked by Mercury 5 months ago

Last reply by zeroknight 5 months ago

Mozilla account in Firefox PC browser always asks to re-login every 1 day

Mozilla account in Firefox PC browser always asks to re-login every 1 day. This problem appeared after updating Firefox from version 119 to 120 and 121. As in the image … (read more)

Mozilla account in Firefox PC browser always asks to re-login every 1 day. This problem appeared after updating Firefox from version 119 to 120 and 121.

As in the image below, "Account Disconnected" and a triangular warning appears in the Firefox menu bar. I can't access any sync data like passwords, bookmarks, plugins if I don't re-login.

I only use this mozilla account on 1 PC.

Asked by [] 5 months ago

Last reply by cor-el 5 months ago

MetaMask extension

Over the past day or so, I keep having trouble accessing my MetaMask wallet. I just get a spinning wheel and I never get to the "enter password" field. I reinstalled MM… (read more)

Over the past day or so, I keep having trouble accessing my MetaMask wallet. I just get a spinning wheel and I never get to the "enter password" field.

I reinstalled MM several times, I cleared my cookies and cache. Any idea why this keeps happening?

Asked by mr.m7056 6 months ago

Last reply by jscher2000 - Support Volunteer 6 months ago

Is there any way to accelerate the plugin troubleshooting?

From [extensions, themes and hardware acceleration issues to solve common Firefox problems]: > Note: If you have a large number of extensions, it may be quicker to en… (read more)

From [extensions, themes and hardware acceleration issues to solve common Firefox problems]:

> Note: If you have a large number of extensions, it may be quicker to enable more than one extension at a time. The method with the fewest number of restarts required is: Enable half the extensions in this list, then restart Firefox and test for the problem. If the problem reoccurs, you know that the faulty extension is one of the ones you just enabled. If the problem does not occur, you know the faulty extension is one of the disabled ones. Repeat the process until the faulty extension is found.

That's still slow. Is there a way to make this process quicker? In WordPress or Obsidian there is a plugin to handle this.

Asked by Ooker 5 months ago

Last reply by zeroknight 5 months ago

Email page has different configuration and emails sent to me disappear

Information panels show a mail has arrived but it does not arrive in my inbox. Therefore I can get no replies. Inbox display is totally different and nothing is o… (read more)

Information panels show a mail has arrived but it does not arrive in my inbox. Therefore I can get no replies. Inbox display is totally different and nothing is ordered as before, by date etc.

Asked by tony273 5 months ago

Last reply by Terry 5 months ago

hardware acceleration option no longer available

since the update today my browser's been really slow to stream video across the board. i fixed this a few months ago by turning hardware acceleration off and i tried to … (read more)

since the update today my browser's been really slow to stream video across the board.

i fixed this a few months ago by turning hardware acceleration off and i tried to check if it had been turned back on and the entire option is completely gone from the performance section in settings.

i dont see an option anywhere else to change this, and i really dont want to switch back to chrome for streaming. is there a hidden option somewhere that im missing?

Asked by emma.vasaturo 6 months ago

Last reply by zeroknight 5 months ago

Error code: SEC_ERROR_KEYGEN_FAIL

Ever since the automatic update of the new Firefox 120.0.1 none of my pages or websites will open. No matter where I go I get the error message: Error code: SEC_ERROR_KE… (read more)

Ever since the automatic update of the new Firefox 120.0.1 none of my pages or websites will open. No matter where I go I get the error message: Error code: SEC_ERROR_KEYGEN_FAIL before the update I was able to open my bookmarks and other websites with no issues. It is now totally unusable. Please help I like Firefox over Chrome and Edge.

Asked by pattiburns4 5 months ago

Last reply by zeroknight 5 months ago

Firefox opens and immediately closes

I just downloaded Firefox on my new Windows 11 computer and I'm having this problem where I try to open it and it immediately closes. It just flashes on the screen, I tri… (read more)

I just downloaded Firefox on my new Windows 11 computer and I'm having this problem where I try to open it and it immediately closes. It just flashes on the screen, I tried downloading it off of the Mozilla site and the Microsoft store and both times I've been having this issue. It doesn't show up in task manager when trying to open it, my computer is updated, and I'm connected to Wi-Fi. I have a video of the issue but it wont let me put videos here.

Asked by jesserow5 5 months ago

Last reply by zeroknight 5 months ago

Toolbar popup windows too small

Hi, as seen in the screenshots, the toolbar popup windows are way too small. This goes for installing addons, websites asking for permissions, and remembering autofill in… (read more)

Hi, as seen in the screenshots, the toolbar popup windows are way too small. This goes for installing addons, websites asking for permissions, and remembering autofill information. It only seems to affect those instances, as addons pinned to the toolbar work as expected.

I've tried:

  1. Clean reinstalling firefox (including deleting the Mozilla directories in AppData/Roaming + Local)
  2. Deleting the default profile and creating a new one and launching with that
  3. Deleting the xulstore.json file

The issue still occurs in troubleshoot mode, so doesn't seem to be an addon causing this. I also have the zoom set to 100% and font size as it was when installed; this is a fresh install still doing it.

This is similar to https://support.mozilla.org/bm/questions/1342630, except that was 2 years ago and trying those solutions did not work for me.

Any help would be appreciated. Thanks

Asked by lyxnxx 5 months ago

Last reply by zeroknight 5 months ago

Recommendations for compiling firefox

Dear friends at mozilla.org, Thank you for your excellent browser, which I've used almost from its first versions. I'd like to compile its source code, which I've downl… (read more)

Dear friends at mozilla.org,

Thank you for your excellent browser, which I've used almost from its first versions.

I'd like to compile its source code, which I've downloaded from your website, into a working browser. I've spent several days, and get only as far as not-terribly-helpful error messages, that indicate strongly that I'm using versions of tools and libraries that the source code doesn't like.

I'm using

 linux kernel 6.1.0-13-686-pae (from Debian)
 gcc 13.2.0-9
 perl 5.36.0
 python 3.11.7

It's sufficiently important for me to compile firefox that I'd install a fresh linux system for this purpose. Could you possibly recommend to me what linux distribution I could install, and versions of compilation tools, header files, libraries, etc. that are known to work for compiling firefox? I'd be glad to report back to you my results, to help others who'd like to compile firefox.

In case you're wondering, I'm perfectly competent in installing software, including compiling anything. I'm an M.I.T. graduate, and have been a professional computer programmer for most of the half-century of my working life.

Thank you kindly for any response that you have time to send to me.

Very truly yours,

Lyman Opie [email address]

Asked by jf02ut 5 months ago

Last reply by Paul 5 months ago

"SSL_ERROR_RX_RECORD_TOO_LONG" only on firefox browser

Hi My website receives this error sporadically but almost everyday when I open it via firefox: "Secure Connection Failed An error occurred during a connection to flash… (read more)

Hi My website receives this error sporadically but almost everyday when I open it via firefox:


"Secure Connection Failed

An error occurred during a connection to flashsystem.ir. SSL received a record that exceeded the maximum permissible length.

Error code: SSL_ERROR_RX_RECORD_TOO_LONG

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem."


And I can open it using other browsers with no issue at the same time, this will affect on my website traffic for firefox users, any solution ?

Asked by amooei.mohammad 5 months ago

Last reply by cor-el 5 months ago

Firefox Slow on Only One PC

I love Firefox and am a committed user, but on only one of my PCs it runs so slow that I am considering switching browsers. The slowness happens most of the time, but not… (read more)

I love Firefox and am a committed user, but on only one of my PCs it runs so slow that I am considering switching browsers. The slowness happens most of the time, but not all of the time, except when I open more than one tab, when it is all of the time. (Neither Chrome nor Edge have any such problems.) The loading time for pages is agonizing, and I have tried the following:

  • Clearing Firefox's cache (which usually fixes the problem for a day or so)
  • Resetting Firefox (which usually fixes the problem for a day or two)
  • Using all combinations of Performance settings (using/not using recommended settings and using/not using hardware acceleration

I am running the same Kaspersky software on this PC as the ones on which Firefox runs well, so I don't think that is the problem (although I'm not an expert tech user, I admit). I'm running an AMD Ryzen 5 2600X with 2x8 GB DDR4-3000 RAM. Please advise.

Asked by mdelam1972 5 months ago

Last reply by zeroknight 5 months ago