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Firefox not opening

Hello! I am an avid user of firefox (especially with adblockers) on a windows 11 PC. Unfortunately, I have recently been experiencing an issue where when I attempt to ope… (read more)

Hello! I am an avid user of firefox (especially with adblockers) on a windows 11 PC. Unfortunately, I have recently been experiencing an issue where when I attempt to open firefox, a window will open for a split second before instantly closing again. My PC is up to date, I have tried refreshing firefox and doing a clean install, but cannot seem to overcome the issue, or even open it in safe mode. Does anyone have any advice? Many thanks in advance!

Asked by Leo 2 weeks ago

Answered by TyDraniu 1 week ago

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firefox stops responding at random times and won't close

About two weeks ago, Firefox started randomly hanging and would stop responding. It wouldn't let me close the program and I always have to restart my system to resolve th… (read more)

About two weeks ago, Firefox started randomly hanging and would stop responding. It wouldn't let me close the program and I always have to restart my system to resolve the problem. Sometimes it only takes a few minutes after restart before it hangs, other times it will be fine for hours.

I've tried multiple solutions I've found online, carefully following instructions: clearing cookies and cache, disabling all extensions, refreshing firefox, creating a new profile, deleting specific files within the Profiles folder, etc.

I've yet to make it more than four hours without the program hanging.

Any assistance or suggestions are greatly appreciated.

Asked by Jera 6 days ago

Answered by Jera 3 days ago

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How to edit saved autofill data in Firefox 136.0.2 in 2025

I have Firefox 136.0.2 (up to date) on Win 11. I want to remove specific autofill items, NOT all autofill items. Web info says use Settings > Privacy & Security … (read more)

I have Firefox 136.0.2 (up to date) on Win 11. I want to remove specific autofill items, NOT all autofill items. Web info says use Settings > Privacy & Security > Forms & Autofill BUT there is nothing for Forms and Autofill in my Firefox 136.0.2

Can anyone please help me find how to edit autofill in this version?

Asked by jules 3 months ago

Answered by Logosor 3 months ago

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Profile Randomly Inaccessible

I opened up Firefox just now to find that my two profiles currently in use are completely inaccessible. I was faced with a "Create Profile" dialogue that launched me into… (read more)

I opened up Firefox just now to find that my two profiles currently in use are completely inaccessible. I was faced with a "Create Profile" dialogue that launched me into a brand new profile with none of my settings, keybinds, cookies, extensions, anything. Despite this, I know for a fact that my old profiles are *still* there. As you can see my profile folders are right there, with all their data intact as far as I can tell from inspecting their contents, yet they are not accessible from the about:profiles.

Please help me. What is happening with the profile manager? How do I access those old profiles?

Asked by robert_phan 20 hours ago

Answered by robert_phan 16 hours ago

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Missing Content Security Policy enable/disable setting on about:config

Hello, I noticed that a setting on the about:config page was removed: the "security.csp.enable" setting. I was using this setting to disable CSP to be able to load local… (read more)

Hello,

I noticed that a setting on the about:config page was removed: the "security.csp.enable" setting. I was using this setting to disable CSP to be able to load local JS scripts on some non-locally hosted sites, for debugging and development, work related purposes.

Was this setting really removed? Is there a way to disable CSP on Firefox on the latest version?

Thanks! Gabriel.

Asked by gabrielmuttiteixeira 3 years ago

Answered by cor-el 3 years ago

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Middle Mouse opens link in 2 tabs / closes 2 tabs constantly

Hi Firefoxes! I updated to the latest and greatest 99.0.1, whenever i use the middle mouse button it opens every link in 2 tabs. Also when i middle mouse on a tab, 2 tabs… (read more)

Hi Firefoxes! I updated to the latest and greatest 99.0.1, whenever i use the middle mouse button it opens every link in 2 tabs. Also when i middle mouse on a tab, 2 tabs are closed. Anyone came along this bug? Restarting FF and Windows did not help. Trying to get my notebook charged and check it on my macbook.

TYVM! Best regards, -John.

Asked by rayben1 3 years ago

Answered by rayben1 3 years ago

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cookie management

Since the update that changed the cookie management, I have not been able to delete just my cache without losing all my cookies & login information. I'm no longer abl… (read more)

Since the update that changed the cookie management, I have not been able to delete just my cache without losing all my cookies & login information. I'm no longer able to automatically sign into a bunch of my sites.

Asked by dmacknair 3 years ago

Answered by jscher2000 - Support Volunteer 3 years ago

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Right side of screen not working while using Firefox

The right side of screen, scroll and keys (close, minimize, etc..) on menu bar not working, any fix? When I move the entire screen leftwards, then the scroll and keys wor… (read more)

The right side of screen, scroll and keys (close, minimize, etc..) on menu bar not working, any fix? When I move the entire screen leftwards, then the scroll and keys work...

Asked by SuMo Bot 3 years ago

Last reply by SuMo Bot 3 years ago

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YouTube 4K video playback performance issue on Windows 11

I had been using Firefox browser for awhile, but because of playback performance issue, I have to using another browser just for video playing, especially for 4K video. … (read more)

I had been using Firefox browser for awhile, but because of playback performance issue, I have to using another browser just for video playing, especially for 4K video.

Compared to Edge, Firefox seems taking more resources to playback the YouTube video and more heat. When look at the Task Manager, the Video Processing is 0%, and GPU is running significantly more resources on '3D'.

Asked by mingsun123 3 years ago

Answered by mingsun123 3 years ago

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trying to access Facebook error

An error occurred during a connection to www.facebook.com. SSL_ERROR_DC_EXPIRED What in the world? does Facebook not keep up with its own security? or is this a Firefox t… (read more)

An error occurred during a connection to www.facebook.com. SSL_ERROR_DC_EXPIRED What in the world? does Facebook not keep up with its own security? or is this a Firefox thing?

Asked by judgeraye 3 years ago

Answered by cor-el 3 years ago

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On certain domain, firefox stop loading the page for a while

This bug occurs very randomly, but it seems there have few things in common. - Occurring on domain level, one domain at once. For example, if Youtube.com stuck, any sub … (read more)

This bug occurs very randomly, but it seems there have few things in common.

- Occurring on domain level, one domain at once. For example, if Youtube.com stuck, any sub address including each video page is not loaded. Other website and whole browser works fine. - Other program on same PC is not affected, too. - Which page is stop loading is completely random. It might be happen only on a popular, feature-rich site like amazon, google, but not sure. - The timing is also random. Maybe after waking PC up from sleep, but not sure. Frequency of occurrence is once every 1~5 days. - The workaround without restarting browser is 1.)switching to other container tabs(strangely), 2.)opening website on private window. Disabling all the addon manually didn't help.

Since it's randomness, I didn't have any logs about this issue.

Asked by bleepblopp 3 years ago

Answered by cor-el 3 years ago

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Are McAfee LiveSafe (on Windows 11) and Mozilla Firefox with Mozilla VPN (have and prefer) compatible?

New computer, running Windows 11, McAfee LiveSafe came with for 30 day trial. I use Firefox, have since 1997. Just added Mozilla VPN. Old computer ran Xubuntu. Windows 11… (read more)

New computer, running Windows 11, McAfee LiveSafe came with for 30 day trial. I use Firefox, have since 1997. Just added Mozilla VPN. Old computer ran Xubuntu. Windows 11 needs antivirus because it's Windows. So. How compatible are McAfee LiveSafe and Firefox with Mozilla VPN? What suggestion, if any, does Mozilla have for an antivirus program that will work well for Windows 11 but not mess with Firefox and Mozilla VPN? Thank you.

Asked by mwhesapa 3 years ago

Answered by Dropa 3 years ago

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Printing too small.

I can no longer print from firefox. The final print always comes out 1/5 +- size and is unreadable. It doesnt matter what king of a document it is and if I go to chrome o… (read more)

I can no longer print from firefox. The final print always comes out 1/5 +- size and is unreadable. It doesnt matter what king of a document it is and if I go to chrome or edge it prints fine. This began occurring I believe after the last version.

Asked by lk3w99 3 years ago

Answered by jscher2000 - Support Volunteer 3 years ago

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Option to use Gmail for mailto: links has suddenly vanished from Settings

Just now, I tried to use "Email Link..." under the File Menu and got a pop-up asking me to "Choose an application to open the mailto link." I have seen this before, seve… (read more)

Just now, I tried to use "Email Link..." under the File Menu and got a pop-up asking me to "Choose an application to open the mailto link." I have seen this before, several times, and usually fix it by going to Tools > Settings, under General > Applications, select "mailto" under Content Type, then select Gmail from the drop-down menu.

This time, however, Gmail is not presented as an option, in this pop-up. Clicking "Choose..." just opens up a Windows Explorer file-picker window.

I tried to fix this in Tools > Settings, under General > Applications. There, "mailto" just shows "Use other..." and if I click that, the "Select Helper Application" pop-up window is basically blank, with a message at the bottom saying "No applications were found for this file type."

I refreshed Firefox but it did not solve the problem.

I have tried to attached images but they will not upload.

I am running v100.0.1 (64-bit) on Windows 11

Asked by lindabknight 3 years ago

Answered by Dropa 3 years ago

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log ins

when i pull up a log in page firefox always wants to fill in my log in name. i went to the settings page and firefox says that i have no saved log ins. how do i clear m… (read more)

when i pull up a log in page firefox always wants to fill in my log in name. i went to the settings page and firefox says that i have no saved log ins. how do i clear my log in name or stop firefox from trying to fill it in for me.

Asked by KTMOTY1 3 years ago

Answered by Dropa 3 years ago

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Completely broken profiles

Hello team, I'm not sure what happened, but I was not able to open Firefox after restarting my PC. I currently run Windows 11 on a fully upgraded rig. Up until today, I… (read more)

Hello team,

I'm not sure what happened, but I was not able to open Firefox after restarting my PC. I currently run Windows 11 on a fully upgraded rig.

Up until today, I have been trouble free. Error 1: "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."

I tried several options - and have been googling/trying several steps for a couple of hours (after each step, I restarted the PC):

1. Uninstalled and then Reinstalled a fresh copy of Mozilla 2. Attempted to use Command Lines to open Firefox https://wiki.mozilla.org/Firefox/CommandLineOptions 3. Opened Profile Manager and attempted to create a new profile - when I did this the new profile would not display in the Profile Manager, but it would display in the Profiles folder under Appdata [I tried this multiple times] 4. Deleted the profiles.ini file

After deleting the .ini file Error 2: "Your Firefox profile cannot be loaded. It may be missing or inaccessible." 1. Uninstalled and then Reinstalled a fresh copy of Mozilla 2. Opened Profile Manager and attempted to create a new profile. After following the Profile Wizard, another error pops up: "An unexpected error has prevented your changes from being saved."

I am completely stumped. I hope you can help, Sean

Asked by sean.oneill.29 3 years ago

Answered by cor-el 3 years ago

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Digital signature stopped working

Digital signature was working properly since yesterday ie 20th May 2022, but now its stopped working, what will be the reason, Digital signature process stuck and not pr… (read more)

Digital signature was working properly since yesterday ie 20th May 2022, but now its stopped working, what will be the reason, Digital signature process stuck and not proceed further, if you kindly send me setting of firefox for DSC i will always be greatful to you. thank you.

Asked by SuMo Bot 3 years ago

Last reply by SuMo Bot 3 years ago