Firefox Community Forum

Hello,

I have had an issue for a few months now where certain websites fail to load. This is most easily reproduced on https://addons.mozilla.org, where I am shown the error "An unexpected error occurred" on most pages, preventing me from installing addons.

This issue does not occur in a Private Window, in Troubleshooting mode or in Chrome or Brave, but persists in fresh installs of Firefox. In troubleshooting this issue, I have removed all program files, registry data, and app data pertaining to Mozilla / Firefox. In fresh installs, I can sometimes install an add-on or two before this error starts occuring. I have not imported any previous data.

I was previously installing from Chocolatey, but in my last clean install, I downloaded from the official website.

I am on Windows 10 and Firefox 157. I use Proton VPN (Paid) and have tried changing servers several times to no avail. Again, this only happens in Firefox in a standard window, Private Mode and Troubleshooting Mode are fine.

Screenshot 1 shows the issue from my most recent reinstall. I was able to install 1 add-on (SponsorBlock) before it started showing up. Removing the add-on doesn't fix the issue. Trying to access addons.mozilla.org via a search engine results in the tab icon loading for a second and no change happening on screen (Screenshot 2).

I experience similar issues on other websites, like trying to log into Bandcamp.com (logging in gives the error "There was a network error. Please try again."), but most sites work.

Loading https://addons.mozilla.org/en-US/firefox/ gives the following results in the Network Console:

Uncaught (in promise) TypeError: can't access property "pressed", target is null

   onChangePermissions chrome://mozapps/content/extensions/components/addon-card.mjs:893

addon-card.mjs:893:7 Reporting Header: invalid JSON value received. collect Reporting Header: invalid JSON value received. collect Reporting Header: invalid JSON value received. collect Reporting Header: invalid JSON value received. collect Reporting Header: invalid JSON value received. collect Reporting Header: invalid JSON value received. collect

Since the latest Firefox update, it hangs immediately at startup. Now it never works, while other browsers always work. This is a fully updated Windows 10 computer. Even when it does work, Firefox's special tabs - About, Close Firefox, Restore session - are often big trouble; and it seems possible one of these may be the problem now. When Firefox is working. it either closes slowly or not at all, bringing always problematic "Firefox is already running - Close Firefox" messages. When one Firefox window is closed, Firefox always keeps the window that is causing trouble in the first place. So, two things. 1) Firefox doesn't work at all. If you fix this problem with an update, the update must start immediately because clicking on "Download Update" too will be hung. 2) You have terribly problematic special tabs which I have named above. It is my opinion that you cannot fix them - you have to rebuild them from scratch - otherwise they would be working properly right now. I have fallen back on Microsoft Edge which always works. Firefox is never working. Think about it.

да наведут порядок с браузером Firefox для ПК ,если не работаете то и извиняться не нужно...

Hello, the QR-CODE that i scan with my cellphone for the 2 authentify wont work i have google authentify i think mabye it couse be need the time to actuell this progress of update that the code funktion funktions . Why i write you is not importent to me and you can help i hope you there have a sultion maybe for my account problem really dont no what the problem for that by the way Mozilla is nice regards Berkan

I would like to disable the recent update at settingbrowser.nova.enabled. The purple-pink colors and rounded corners are VERY hard for me to see. I need the gray background, black writing, and square corners back. Thank you.

Hi, I've three Browser profile, when I get new updates, no matter I at that moment be in which one of them but the update just reach one of the profiles. features like Built it VPN, weather widget and etc does not come to the others two. Please fix this one or if its a problem from me, guide me to fix it.

Password Manager warns about password used in an account exposed in a breach but not what account. Why can't Pasword Manager give any detail on the data breach it warns about. Like what account is breached? Would be very helpful to know what account has been exposed!

In version 157, the favorites icon in the address bar and the download progress bar have turned gray instead of the previous blue. Is it possible to revert these elements to blue?

Be careful. Something doesn’t look right.

Firefox spotted a potentially serious security issue with mail.pgsolusi.com. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails.

mail.pgsolusi.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

I'm getting this when trying to sign into mine and my fiance bank accounts why Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

Error Code: PR_END_OF_FILE_ERROR

i accidentally uninstalled Firefox and lost my session, i have Tab Session Manager but it seems that the uninstallation also deleted the saved sessions in there...

can anyone please help?