Firefox Support Forum

One of the typical configuration in linux is to turn off the user namespaces and/or network namespaces. This is because most of the exploits in linux have been related to namespaces vulnerabilities.

If there is a Firefox ver 127.0.2, running on Linux in which the user namespace is turned off then the following is observed in the Troubleshooting information, i.e. about:support Seccomp-BPF (System Call Filtering) true Seccomp Thread Synchronisation true User Namespaces for privileged processes true User Namespaces false Content Process Sandboxing true Media Plugin Sandboxing true

So how come with the username turned off, the content process and media plugin is still sandboxed? Also is having user namespace turned off, as given above, a security risk?

However if the network namespace is turned off, i.e. max_net_namespaces is set to zero, then it renders the browser unusable. Nothing works. Why is that?

Is there some documentation somewhere where these namespaces and their impact is explained in detail?

Dear FireFox, I am writing this E-mail to address a critical issue. So i wanted to set up a password for my firefox browser so that only I can access it. i set a primary password, and it asks me to enter the password when i open my browser. However, when the message appears asking me to enter the password, you can just click "cancel" option or press 'x' it ignores the password and lets me in the browser, essentially rendering the purpose of the password useless. thus anyone can access my browser. i request you to fix this problem. Regards -SpideyKnight

My laptop glitched while doing a Windows update and it chose to not load certain apps upon completing the update. Mozilla Firefox was one of the apps it chose to delete and I lost all my bookmarks with my login information to all my accounts, can I retrieve those?

I have saved a lot of shortcuts bookmark on my homepage,yesterday when i opened my firefox,it was all gone and it went back to default homepage. what do i do to recover it.

Hello, recently I've been having issues where if misclick anywhere on the title bar (even in the small space between bookmarks) firefox will minimize/restore when I didn't want it too. How do I disable this in about:config?

I'm unsure about this setting. I don't want a tab to reload when it's switched to.

It seems to indicate that something will be reloaded regardless of what I choose. I assume that's probably not the case.

Please confirm.

Good morning, Our company's firefox add-on(Saba Security Plugin) has stopped working, please let me know what happened.

When a new client (version 126) downloads the add-on, the following message is displayed: "The add-on downloaded from this site cannot be installed because it appears corrupt."

If you install an older version, it works without any problems, what is the reason?

I have already contacted you once at: product-help@firefox.com

And they told me to report at: https://support.mozilla.org/questions/new/desktop/form

Regards,

I transferred by Firefox bookmarks from my old computer to my new Windows 11 computer. I think they transferred fine. But to access them, I have to click on Bookmarks and then go down to Manage bookmarks and click on it. Then I see them on the page that has all the Import and Backup access on it. How do I get them to appear in the side panel as a list like they did on my old computer?

I have Windows 11, Firefox yahoo email. I must have clicked somewhere that consolidated all my email to the left in a narrow format. Can't locate where to correct it. Also had no luck attaching a screen shot. Next to the condensed email, is another column that is blank except for the white envelope. Is there a place where I can change the format? Thank you.

I want to change "browser.sessionstore.resume_session_once" preference to true. So I do it in about:config page and if I reaccess this page in another tab within the session, then my value is being kept.

However, when I restart Firefox (thru "Exit" in "File" menu), all previous pages get restored and that preference is "false" again in the config after a new browser start.

I also made a user.js file with the following content: // user_pref("browser.startup.couldRestoreSession.count", 0); user_pref("browser.sessionstore.resume_session_once",true);

Nothing helps.

Please let me know how I can modify the config file.

Thank you!

I can't stay on this site for very long at all, and do my best to write out what I need as quickly as possible then leave. I would never contribute to answering any questions other then my own because how bright it is will eventually cause me pain.

In my view, it represents an amateurish view on website design and likely has an impact of skewing the regular user base to people that don't mind it.

Sincerely,

A user who only subjects themselves to this painfully, pointlessly white website if they absolutely have to.

Good Day!,

After masking them with my duck duck go service, I can't find the link to verify my emails. Where can I see any return responses using my mask email?

I can edit my short cuts. One I have added the Name, and the URl, I also have the option to add a custom picture to the square icon for the shortcut. It seems obvious to want, as I do, to "drag and drop" a photo of my choice from my personal collection. For example, when there are multiple shortcuts for the email of each person in the family, their individual photo is a great identifier. As things are now it seems I can only add another URL. I tried to add the URL from a family members Facebook page but it would not accept the link. Can some techno whizzz out there not make "drag and drop" an option? It would be REALLY useful for us all to have the photo of our choice, either a family person where appropriate, or a pet or whatever, or a friend. Thanks. Drag and DRop seems such such a common process now I cant think it would be difficult. Well....I wouldn't know where to start of course, but thats why this is a Help forum! I look forward to you coming up with something! Thanks. Have a great day.

How can I resolve issues with video streams from Facebook Workplace?

This issue doesn't happen in Chrome. When I stream video in Facebook Workplace, the video stops frequently and becomes poor quality at times. I have recommended performance settings enabled, using hardware acceleration.

Hey all, Before I go to far, here... Firefox version 127.0.2 (64-bit) Windows 10 Version 10.0.19045 Build 19045 Extensions - Malwarebytes browser guard.

What I've done: Cleared cache, history, etc. etc. ran multiple system scans restart app restart windows

So how do I keep Firefox from opening pop-up for about:config? That's right, There are pop ups that firefox allow to open new tabs, and its the about:config page.

Also, every time I start typing out google in the address bar auto suggest fills in googleleadservices or something like that. I already went through all the same steps above and more. I originally thought it was just opening one of the last pages I went to, but if I've "cleared" everything as per the way firefox has it set up, why would it have any history of what the last page was?

David, here are two screen shots (ss) to clarify my issue with email and a third regarding another issue (see below).

Number one ss shows what I see when I go to Thunderbird. I am allowed to delete if I wish by first marking the email and then clicking delete. If, however, I wish to view the message, Number two ss appears. I cannot delete the message without going back to Number one ss as that option has now disappeared. This was no problem on my old computer.

The other issue is related to the above. I have over 250 emails without being able to access them (see Number three ss). On the left upper side is the number of emails I have, but only six old emails appear, something that is confirmed in the upper right frame. No matter what I do, I cannot access them.

I have been a long term Firefox user, but recently Firefox on Ubuntu seems to have more and more problems.

Here is the most recent one: I can't buy bus tickets on a largest provider in Lithuania (nothing happens after clicking "Pay").

https://autobusubilietai.lt/en

It worked in Chromium Browser.

Tried normal, private mode, safe mode and nothing worked.

I have Firefox 127.0.2 (64-bit) on Ubuntu 22.04. I have 0 extensions or addons installed.

Another one: I cannot select the country code from the drop down list when entering phone number in Ryanair, so basically I can't buy flight tickets from there. Chromium Browser didn't work as well, but Safari did.