Firefox Community Forum

Yesterday, I had a trusted Firefox browser with bookmarks going back many years. Today, I have a Firefox browser which has zero bookmarks and no import capabilities. For the first time since Firefox, Edge is starting to look better.

Installing the latest version of Firefox and Debian 13.

Following the instructions in the Mozilla Support document Install Firefox on Linux https://support.mozilla.org/en-US/kb/install-firefox-linux

Operating as Super User.

Chose the option Install Firefox .deb package for Debian-based distributions (recommended)

Steps 1, 2, and 3 worked exactly as expected with in a terminal and using bash.

Step 4 and 5, following the For Debian Trixie and Newer choice does not work. A lot of digging on the internet and found that the command beginning with cat <<eof needs to be cat <<’eof’. the second part of this process has same issue. appling new information solved problem both statements now work. < p></eof>

At this point you have a directory /etc/apt/keyrings. In this directory you have the file packages.mozilla.org.asc Step 3 returns success. You have also successfully applied steps 4 and 5. In directory /etc/apr/souces.list.d you have the file mozilla.sources.

It contains the instruction “Signed-By: /usr/share/keyrings/packages.mozilla.org.gpg”

No where in the previous stepd was the file Signed-By: packages.mozilla.org.gpg ever created.

Why is the deb package looking in /usr/share/keyrings when step 2 puts a similarly named file Signed-By: /usr/share/keyrings/packages.mozilla.org.asc in /etc/apt/keyrings

Step 6

Running apt update returns

Err:4 https://packages.mozilla.org/apt mozilla InRelease  Sub-process /usr/bin/sqv returned an error code (1), error message is: Error: Failed to parse keyr ing "/usr/share/keyrings/packages.mozilla.org.gpg"  Caused by:     0: Reading "/usr/share/keyrings/p ackages.mozilla.org.gpg": No such file or directory (os error 2)     1: No such file or directory (o s error 2) Warning: OpenPGP signature verification failed: https://packages.mozilla.org/apt mozilla InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Error: Failed to parse keyrin g "/usr/share/keyrings/packages.mozilla.org.gpg"  Caused by:     0: Reading "/usr/share/keyrings/pac kages.mozilla.org.gpg": No such file or directory (os error 2)     1: No such file or directory (os error 2) Error: The repository 'https://packages.mozilla.org/apt mozilla InRelease' is not signed.

Help

This is a follow up of previous posts. Note to Wxie & Denys

When I open email links in Firefox, it opens my mail app (proton) but not a new email message. I’ve been in contact with proton support and they said this is only an issue with Firefox and not other browsers. This take works fine on safari and brave on my end, so it seems like a Firefox specific issue. Is this a bug or is there a setting I can fix on my end?

I am not a computer nerd I can only describe what is happening. I am addicted to puzzles and do them every day but am encountering problems nearly every day this week of the puzzle pieces not responding to mouse and have to shut down the computer. At other times I am kicked out of the site and returned to my desk top. No amount of trying to then get back into firefox is useless until much later on. Why is this happening?

According to the help pages, I should see Firefox Updates in the General section of the Settings tab. I found this out because Firefox is not being covered by my (independent) tracker protection programme. The fix, according to the independent tracker, involves accessing the 'Firefox Updates'

I assume Mozilla developers are working on this?

https://singularityhub.com/2026/04/10/anthropics-mythos-ai-uncovered-serious-security-holes-in-every-major-os-and-browser/

Quote from the article

"Its capabilities are a step change from the previous best models. Given the challenge of attacking the Firefox web browser’s JavaScript engine, Anthropic’s previous most powerful model Opus 4.6 succeeded just twice, compared to 181 times for Mythos. Most worryingly, the team found that engineers with no security background could use it to develop successful attacks overnight."

When trying to search in Yahoo, using Firefox, About:Blank comes up instead in a new tab. I have to hit the X to close the new tab, and then hit enter again and I will then get my search results. I have 2 PCs and a laptop and they ALL are having this problem since the last Firefox update. I have tried ALL of the recommended fixes, I have refreshed firefox, cleared cache and cookies, turned off firewall, antivirus, extensions, etc. I have even tried some of the config recommended changes and NOTHING works. It is definitely a Firefox problem and NOT a yahoo problem because all works fine in Chrome and Edge.

Whenever i try to connect to any site, it fails to load and displays the following error message:

This web site requires a secure connection. - The page you are trying to view cannot be shown because this web site requires a secure connection. - The issue is most likely with the web site, and there is nothing you can do to resolve it. - You can notify the web site’s administrator about the problem.

When i press 'advanced' it says: [Site name] 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.

This happens on every site i try to visit. I am on a samsung phone running android version 15. Other browsers do not have this problem (i am sending this from opera), and firefox works fine on my other devices.

Google Search CAPTCHA persists unless you sign in to your Google account. This only happens in your browser, from versions 140 to 149. Other browsers don't have this problem. Changing the user agent used to help. Now, nothing works.

Hi, I have firefox on my desktop, and I want to watch the "10 App" - which is an Australian broadcasting tv channel - but it keep saying " an ad blocker is stopping the app from working" I also tried their website, and the same thing happens. I tried to check the extensions there is no ad blocker ! can you please advise me how to add permission to this particular app/website. ? and where do I find this adblocker ? thanks.

This does not happen when I use Edge or Chrome so it's Mozilla specific issue. It happens when we use lightning salesforce instance. I've checked with Salesforce Support and they suggested me reaching out to Mozilla support on this. https://www.salesforce.com/