Firefox Community Forum

Opening PDFs automatically with Firefox and, without any changes I might make, saving them with the download function in Firefox, actually ruins the functionality and data entry function of that file. Specifically this happens with PDF files downloaded from the (not all that amusing) PDFs from the FINCEN, (US Financial Crimes Enforcement Network). I do not see why and how Firefox thinks it is allowed to change files that are simply downloaded and saved on Firefox.

In other words, it seems that Firefox strips away certain "permissions" and/or "functions" (like built-in lookup, menu or choice boxes). This means that the file so downloaded via Firefox can no longer be used to properly fill in data, or to look up and choose data items within the file. (I see many times that ANYTHING having to do with "permissions" tends to be an intractable and unsolvable problem for software makers & experts, so, if you do not know right away how to solve the problem, it will probably take you several years to figure this out.)

The PDF in question is created by a government agency. If you have ever dealt with a government agency, then you know that they act sort of like Adobe or Microsoft: "They don't respond, or they do respond & say they do not understand, and if they understand, they are either unwilling or unable to fix the problem."

If there is a switch or option within Firefox, which lets me tell Firefox "Save this file exactly like it is received, nothing added or removed!", that would be nice. I just have not found such an option yet, and it would be nice if it might get provided someday.

I will share my browser data, but I am sort of convinced that a detailed question like mine will not be addressed within that shared data.

Hi!

I am getting messages that I am blocking ads for many of my internet requests. I had never received these before but all of a sudden I started to get them. I have tried a number of things but nothing works.

I am running Windows 11 and do not have any Ad blockers.

Hello. I am setting up a site on Linux server using Apache as reverse proxy , with ASP.NET as application server . since installing SSL , I had few mixed content blocking that i was managed to fix using CSP directive in Apache configuration file. site has no issue with all browser except Firefox. the only issue is that in admin section , to configure a option. system will load a js file that simply a dropdown with list of options to choose from . when using Firefox , it tries to redirect that page to login page . for test , i clicked on the link i located in Developer tools , which directed me to login page , entered my credentials, and scripts loads showing the drop down box and ok button. is been 3 weeks i been looking for every solution and i have done everything .. but nothing have worked. now I am resort to having to use other browsers if i need to use that functionality in admin page. In page header file name : login , location : http://MYDOMAIN.ca/login?ReturnUrl=%2FAdmin%2FDiscountRulesCustomerRoles%2FConfigure%3FdiscountId%3D6%26_%3D1702682353293 , which are not correct . and browser such as Brave and Safari dose not show different path and file name and everything is correct. dose anyone know how to fix this .. ? i saw a solution mentioned as stated resting Firefox ,but can not find a way to reset , but i have reinstalled Firefox and constantly having this issue on this single section of the page . Thanks.

I downloaded Firefox to update my address bar so that various search engines could be used. This was ok for the evening. But next time I booted up, FF reverted to what I had before. How do I make the address bar searches permanent. The FF version I am currently using is 139.0.4.

For about the past 24 hours when I go to youtube to check out a video - nothing works? I clicked on a video to play, got the sound and no picture. I closed out my browser and I kept getting the audio of the video and had to shut down my computer to stop it. Now when I go to a video nothing works. My cursor disappears when I go to chick on the video and I have to move it off to the side just to see my cursor.

I also use a service (VidIQ) that helps me see the tags on the right hand side of my screen for a video and the channel so that I can compare those tags to my videos that I am uploading.   Now that never load just a spinning dial or object like it is stuck.

I hope that you can get this fixed soon or let me know if there is something that I must do at my end.

Thank you,

Johnny Dunn

Hallo Mein Name ist NIco Büchner.

Ich habe in der letzten Zeit öffters in meiner chronik seiten wie bcclk.com und andere Seiten, welche ich nie geöffnet habe gesehen. Das macht mir etwas angst. Auf dem Foto sehen sie einen Auschnitt meiner Chronik. Ich habe von den Seiten die sie da sehen keine jemals gesucht auch nicht die für E bikes etc. Ich wollte wissen ob diese Seiten schädlich sind oder Sicher. Wenn sie nicht sicher sind wüsste ich gerne wie ich sie entfernen kann.

Danke für ihre Hilfe.

At home we have a shared computer with Ubuntu and Firefox as main browser. Each family member has its own Linux user.

We use the functionality of Firefox saving passwords, however we've noticed that these passwords are visible between the Linux users. So, for instance if two of us use the same website, somehow our user/pass get are visible to each other. Is this behavior expected? How can we set FF to make the user/pass visible only to the Linux user who is using it?

Cheers

Hi, I already know that Firefox, especially LibreWolf, is probably the best browser along with TOR and Brave about protecting against fingerprinting. However, after reading this paper https://arxiv.org/abs/2506.00719 about browser fingerprinting via WebAssembly I am wondering if and how Firefox, LibreWolf, can protect us against it. I already read this https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting, but I could not find any reference to such protection. Thank you

Hi,

Firefox version: 139.0.4 (64-bit) OS: Windows 11

I have been having issues where Firefox tab will just crash out for no reason it appears and it happens at random times and once the tab start to crash, and I restore it, it will crash again and again. The only way tog et out of the loop is to restart Firefox.

I have tried: Refreshing/Reset, Clearing Cache and History removing all themes, disabling extensions, disabling my anti virus. Turning off hardware acceleration didn't make any different.

I currently have 2 extensions enabled: uBlock Origin 1.64.0 and Bitwarden Password Manager 2025.5.0

In the about:Crashes I have reported them all and they seem to have the same type of reasons in the Raw data/Minidump which are: EXCEPTION_ACCESS_VIOLATION_WRITE EXCEPTION_ACCESS_VIOLATION_READ

Any help as to what to try next?

Gaz

I want to connect to a server with a self signed certificate. I add it to the Certificate Manager under Servers but Firefox refuses to connect.

How do I connect to server with a self-signed certificate?

i installed firefox browser in my pc. when i opened firefox before i logined to my account it synced with edge . when i logged in to my firefox account it synced and updated my passwords to my old passwords. i lost all updated passwords. is there a way i can recover my passwords

Recently I've noted that tabs on my browser move from where I had them all the way to the far right end of the tabs list, and it happens at random. There'll be times when I click on another tab while listening to music or a video on another only to find the tab I was listening to had moved when I go to click back on it. Without fail, I've found these tabs at the far right end of the set of tabs, and I need to know how to put a stop to this. It's inconvenient, and annoying in extreme. This has to be due to a recent update, because up til a couple months ago, this didn't happen at all. If there's a setting that I can change in about:config, I would like to know about it, because you can bet I'll disable this feature.

My FF browser freezes, suddenly closes all tabs, expands fonts, etc etc All else in my system is normal. Should I just use the default MS Edge and be done with it?

updated my wife's computer firefox to 115.24.0 (esr) and the profile data is lost (bookmarks, addons...).

Went to about:profile and it says PROFILE IN USE: default esr which is the 5th out of six profiles, top to bottom. It should tell me the creation date for each profile.

The 6th in line says "profile: default -release" Is the last in line the NEWEST profile? Should I set that one to be active ( ie the "default profile)?

This usage of the word DEFAULT in multiple meanings is confusing The display should number each profile and tell the user which is the oldest to newest.

This is acting like it is a new version, not a mere update - the user should be warned before he is allowed to perform that process, and given links to what will need to be done to retrieve the previous Profile.

Open previous windows and tabs stopped working. I have gone to settings and made sure the option was selected, which it was, so I proceeded to refresh Firefox, no difference. I deleted Firefox completely and download it, then reinstalled it again. Still not working. How can I fix it?

I understand that Firefox relies on both intermediate and root CA certificates for verifying add-on signatures. There was a recent incident where a root certificate expired on March 14, 2025, as noted in the following article: https://support.mozilla.org/en-US/kb/root-certificate-expiration

Could you please let me know the latest validity period (expiration date) of the root and intermediate certificates currently used for add-on signature verification in the latest version of Firefox (139.0.4)? I understand the certificates involved may vary depending on the add-on, but I would like to confirm this specifically for the following add-on:

X-Forwarded-For Header https://addons.mozilla.org/en-US/firefox/addon/x-forwarded-for-injector/

Thank you in advance for your assistance.

Hi I have found a few times now that if a website calls for information to be input in a form and then submitted the submit doesn't work. However if I bring up chrome then it works fine so I guess it is either one of my settings or a problem with firefox...?

Recently did clean install of OS Sequoia and then all my apps, etc. Installed Firefox and noticed I had no horizontal or vertical scroll bars, (right side and bottom of browser page). I had do I get those turned on. I use a Wacom Cintiq 32 Pro and the pen so not using a mouse with a scroll wheel. Thanks.