I-Firefox Community Forum

Hi everyone, I’m managing an online bill information website, and some users reported an issue when they try to download or print a PDF bill using Firefox. Sometimes the print preview doesn’t load, or the layout breaks, while it works normally on other browsers.

Is there any recommended Firefox setting, extension, or workaround to prevent this issue? Also, is there a specific print CSS or PDF format Firefox prefers to handle better?

If testing is required, this is an example page where users reported the problem: https://fescoebillcheck.pk/

Thanks in advance for any guidance.

google is saying cookies are disabled when using FF to login. This was working Privacy is set to STANDARD and I went into settings and removed google.com as well to no avail.

How do I fix this?

Thanks leon

Heya,

I am the maintainer of the British Dictionary.

For one year that I have been working in the "shadows" on my version of US+Canada+Australian, to be released on 1-JAN-2026.

Can I add your list of proper names (~5000 words) to my dictionaries and release the dictionaries as LGPL?

https://searchfox.org/firefox-main/source/extensions/spellcheck/locales/en-US/hunspell/dictionary-sources/5-mozilla-added.txt

Thank you!

After most recent update all my bookmarks and passwords disappeared and I cannot seem to recover them. This is extremely frustrating. Has anyone else had this happen? I tried using the recovery process but it did not work.

I believe I had all this synced in Firefox Settings before I made the upgrade. Like all you fellow former users of Windows 10, I had to upgrade to Windows 11; and did so two days ago. Now, I found that I do not have under History any of the former sites I not only visited but also had tabs open. What can I do, if anything, to recover them? Under the Add-ons Manager, if this helps, I already had the app Tab Session Manager, but don't know how to use it. Thanks to all in advance who may have made this same upgrade. Many out there are still on Windows 10.

Hello I am having major problems with Firefox at the moment and have done for a while. I curently have four pages open but as you can see from the attached screen shot of my Task Manager, there are 14 Firefox processes. The usage is OTT on memory and everything else. Could you tell me why this is happening? Currently it is running in Troubleshooting mode but that is not doing anything to improve the problem. It has been known to shut my computer down, as it gets too hot. I run on Windows 10 and Bitdefender is my security. All help is gratefully received. Thanks Lisa

On Windows 10 with 64-bit Firefox, after updating from version 144 to 145, some local HTTP-only servers stopped working and became inaccessible. When I enter http://<local server name>, after a few seconds it automatically changes to https://<local server name>, and since no HTTPS service is running, it ends with a “Server not found” page. It seems to be related to DNS — accessing http://<IP address> works fine.

I tried a clean installation with a new user profile, but it didn’t help. Downgrading to version 144 fixes the problem, but at the cost of losing the user profile (which is a disaster). I also tried to check the HTTP-only settings (which I’ve never modified), but that didn’t help either.

Is anyone else experiencing the same issue?

Unlike before, many sites that I visit regularly, I am now having to log in every time I visit, including support.mozilla.org.

Did I unknowingly change something, some setting? or perhaps it's due to an addon?

Hello all...

This is driving me crazy. I have the latest version Firefox 145 installed, however, this morning I discovered that while trying to log in to various banks for my credit cards, I've been getting "inability to login" messages, or a blank page comes up. Even when I try to change passwords (which I really didn't need to do), I keep getting denied.

I cleared all of my cache, but that does no good whatsoever. This the worst set of bugs with Firefox that I've ever experienced.

Yet, when I use Microsoft Edge to log into all of those sites, there are NO issues whatsoever.

What gives here - what went wrong?

Ben Herrmann Fuquay-Varina, NC

Hi everyone, I manage https://myphoneoffers.com, a website that lists mobile phone prices and SIM packages in Bangladesh. I’ve noticed that a few JavaScript-based components (such as floating offer banners and comparison tables) don’t always load properly in Firefox. In some cases, it looks like ad-blocking or strict tracking protection might be preventing the scripts from running. I’m using lightweight JavaScript with no third-party ads — just local scripts and analytics. Could anyone explain how Firefox’s Enhanced Tracking Protection or JavaScript settings might affect embedded scripts? And what’s the best practice to make sure essential scripts still load while maintaining user privacy? Any insights from web developers familiar with Firefox’s JS behavior would be really helpful. Thanks!

Following a restart procedure on Windows 10 today, all my saved Firefox Passwords have now gone! (Firefox 144.0.2 (64-bit))

Can I recover them?

Please note; I will read and review any replies but cannot respond until tomorrow, as am at work now.

Thanks in advance! Andy.

Hi, I hope your doing well.

I've always had this same problem for years across multiple machines. My problem is whenever I seem to close Firefox down without using Task Manager to do so I will lose all of my tabs from the previous section. I know what you're thinking. There's a checkbox in the general settings right at the top to opt in to keeping tabs open. It's ticked! and has been since forever, and yet I still lose my tabs. So my question is, why might this happen? and how to prevent it?

Additionally, the 'restore last session' keyboard shortcut doesn't work for me either.

I'm really enjoying the new profile switching update; however, my other question is, how do I close a profile session down while I have another open? Yes, I'm aware you can open them side by side and close the window of choosing. A bit counterintuitive if you are trying to separate work from play. Still, I would like to not lose my tabs when I do choose to close one and not have multiple windows running in the background. Also yes, I did remember to check the box in the settings on each profile. Ticking the box does nothing for me.

I have been fixing dozens of problems with 140 ESR's GUI. Earlier today I fixed almost all of the problems with the search panel:

Screenshot: https://forums.mozillazine.org/viewtopic.php?p=15008668#p15008668

Except one: I do not know how to detect when the default search engine has changed. I need to know how to detect when the default search engine changes so I can update the favicon and placeholder text by recalling my gui_fixes_search_favicon() function in userChrome.js.

I'm an experienced web developer of 20+ years and would be grateful if someone could share their insight without the often "obligatory" cautionary tales 101 bit. Thank you in advance!

for awhile now I am getting this message. I have multiple browser windows open with multiple tabs each. Even if I delete all but one browser window I still get this message.

What can I do to rid myself of this message?

Thanks leon

I am on Windows 10 Pro (extended to Oct 2026) and use the Firefox profile manager at startup since I have more than one profile. Today (11/12/2025) I attempted to start Firefox and the profile manager window would not populate. the window was blindingly white on my dark background. I closed and restarted umpteen times but it refused relentlessly. I was about to uninstall firefox and then decided to see if I had actually installed it on any of my mobile devices. And indeed I had it on my ancient Apple iPhone 7+. And it was synced! I refreshed the sync and indeed it picked up my most recent activity from last night. All tabs were synced. To make sure I had another synced copy I also installed it on my iPad. I synchronized this too and suddenly my desktop browser started working again.

I don't know what caused the lockup of the Profile Manager but I am afraid it might happen again. What causes this and what can I do to regain control without having to reinstall? I am a researcher and I have over 1000 tabs open.