Firefox Community Forum

Hello, I use KeePassXC as a password manager, and it has a companion Firefox extension called "keepassxc_browser".

Since it's a password manager, I need it to work on all webpages, even restricted ones like the Mozilla account webpage. That's why I've allowed the extension to run on sites with restrictions, as described here. But: Even after enabling that setting for the extension, keepassxc_browser still won't work on accounts.firefox.com. Only after setting `extensions.quarantinedDomains.enabled` to `false` in `about:config`, keepassxc_browser started working on the Mozilla account webpage. But of course doing this opens restricted websites to ALL extensions, which is quite a security hole. So, why "run on sites with restrictions" does not work?

Hi, I am Soumitra Dutta, an Oxford based entrepreneur and photographer. My Firefox browser suddenly stopped working, and I’m not sure what caused the issue. I’ve tried reopening it, but the problem is still there.

Has anyone experienced a similar problem before?

Regards Soumitra Dutta

Secure Connection Failed

An error occurred during a connection to www.amazon.in. The OCSP response is not yet valid (contains a date in the future).

Error code: SEC_ERROR_OCSP_FUTURE_RESPONSE

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

Learn more…

I'm using Windows 10 on a PC. Norton Security app is preventing web browsing by Firefox. The message I get is: "We prevented your connection to ful.hartonly.com because it is a dangerous webpage. Threat category: URL:Blacklist" I can still web browse using Google Chrome without any problem. What is ful.hartonly.com and how do I clear it?

I can't open, delete, uninstall or update my Firefox on my laptop???

I dont have much Ram space on my computer - but am working on expanding it.

Yet, still - I can't open, delete, uninstall or update my Firefox on my laptop

Sehr geehrtes Support-Team,

ich habe seit Kurzem ein Problem mit Firefox auf meinem PC. Es erscheint folgende Fehlermeldung:

   „Das Lesezeichen- und Chronik-System wird nicht funktionieren, da eine der Dateien von Firefox von einer anderen Anwendung verwendet wird. Dieses Problem könnte von einer Sicherheitssoftware verursacht werden, beispielsweise von einem Virenscanner.“

Ich nutze dasselbe Firefox-Konto auf meinem Handy und auf meinem iPad. Dort funktioniert die Synchronisierung der Lesezeichen ohne Probleme. Das Problem tritt nur auf meinem PC auf.

Ich arbeite bereits seit mehreren Jahren mit Firefox und hatte dieses Problem bisher noch nie. In meinen Lesezeichen sind sehr viele wichtige Webseiten gespeichert, deshalb möchte ich diese auf keinen Fall verlieren.

Können Sie mir bitte mitteilen, wie ich dieses Problem beheben kann, ohne dass meine Lesezeichen verloren gehen?

Vielen Dank für Ihre Unterstützung.

Mit freundlichen Grüßen

Meik

This is a recent problem but when I try to open new tabs they don't load or take a very long time to load. I wind up shutting down my computer and resarting but sometimes that doesn't help. it seems to be getting worse. I do not use any other VPN but yours and Duckduckgo to search. I use a macbook air. Any suggestions? Thanks

VPN is on. I can't access the internet. Error message is either: An error occurred during a connection to www.thewindowsclub.com. SSL received a record that exceeded the maximum permissible length.

Or: Connect to the internet You're offline. Check your connection.

I've googled the issue but it talks about ports and tunnels and going into settings. I've looked in the VPN Mozilla settings and there only seems the option to either include or exclude a website from the VPN. Nothing about different ports and testing. I've already written this message once but the VPN was on so it disconnected the internet and I lost this message! Trying a 2nd time now without the VPN

Any help? Or should I give up with it?

thanks Annie

I'm using Firefox 153.0 on a Windows 11 desktop. I'm trying to use the feature that backs up my profile (bookmarks, history, and other data). When I turn Backup on, I'm asked where to store the backup, and I accept the default of putting it on my OneDrive. When a backup begins, an empty folder named "Restore Firefox" appears in my OneDrive, as expected. Firefox shows a message like "backup in progress." After a minute or so, the "Restore Firefox" folder disappears. After another minute or so (not immediately), Firefox tells me the backup failed and that I should try again later.

I assume the backup failed because the folder it was trying to use isn't there, but why did it get deleted?

There is ample space on my OneDrive and on my local system (100s of GB). I am using the ESET security software package, but it did not raise any warnings or errors.

I am trying to access my QNAP NAS configuration page within my home LAN from a newly installed Linux PC with Firefox 147.0.1. Firefox won't let me access the page, popping up an error page:

Warning: Potential Security Risk Ahead

Firefox detected a potential security threat and did not continue to nessy.fritz.box. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

I have verified that the claimed risk is nonexistant, but Firefox does not allow me to bypass the warning. There is no "Proceed anyway" or "Advanced..." button as claimed in various help articles.

How can I convince Firefox that I know what I am doing?

NB: The same page is accessible, also with Firefox 147.0.1, from a Windows PC.

I've had a problem for a while where Firefox tells me "Firefox is being updated by another instance" and the only way I've been able to get updates is by using the installer.

In my attempts to resolve this, I learned of the `about:profiles`. I have never set up profiles so I figures I should only have the 1 default profile but it turns out I have `default`, `default-release`, default-release-1`, and `default-release-2`.

Of these profiles, the `default-release` is the 1 that has my data while it is `default-release-1` that is able to update.

I would like to make it so that I only have 1 profile that has all of my data AND is able to update.

I already tried removing all the profiles accept the one with my data but that leaves Firefox unable to update. I restored all the profiles I removed and I am back to where I started.

Does anyone have any suggestions?

When I select a YouTube home page video mute icon, for sound on a preview, it pops up a mini-player, a notice that I have "saved to watch later," or toggles the mute as expected. Intermittent and unpredictable. I can select one mute icon that toggles the sound, and the preview beside it pops up a watch later.

Win10, Firefox 152.0.6 (64-bit) today, but this has been with me about the last two iterations.

I ran though eleventy-billion experiments and there was no effect from any toggling of settings, add-ons, file deletions, toggled logouts, forced refreshes, you name it. The single positive is that the keyboard "m" works fine to toggle mute in a video page playback, but not the previews at home. I followed AI advice after I gave up on my own ideas, and after recommending everything under the sun the only conclusion offered was related to failed mouse tracking, which is nuts to me. Everything works fine except this YouTube oddity, including videos or sound output on other sites. I was actually surprised that nothing changed YouTube behaviour after my freaking out on FF details; doesn't mean the trick isn't in there somewhere.

In simple terms, I have not read reports of this problem and I have no idea how to proceed.