I-Firefox Community Forum

Firefox OFTEN starts with a screen which reads, Sorry we are unable to restore previous sessions. OF COURSE it cannot restore previous sessions. I leave the box unchecked next to, "Open previous windows and tabs. I check the setting, delete all data on closing. I take great pains to delete data including cookies, website settings, etc, on closing, EVERY session. I NEVER want previous tabs, windows or sessions restored. HOW do I program FF to REMEMBER the setting, box unchecked next to "Open previous windows and tabs"

A couple of days ago I noticed that Firefox had started using "Profiles". I do not want a profile. When I wanted to open firefox a window popped up asking me to pick a profile. I deleted my account. Now Firefox will not let me use it because I don't have a "Profile". If I cannot use firefox without a profile, which I never had to do for umpteen years, then I well switch to Chrome.

Why is there not an option to say "no" to Firefox automatically loading when you restart your computer? There is only "yes" or "not now". I am not interested to my internet browser loading and opening once I have restarted my computer. I use my computer for much more than browsing on the internet. I am tired of always having to click the "not now" option to only have it show up the next day or two days later, where I then have to click, yet again, the "not now" option. I even went into Firefox settings and have not found an option to "op out" of this particular feature. Can you please add a "no" option to automatically opening upon restart.

Dear Mozilla Team,

I kindly ask you to add support for the X25519MLKEM768 hybrid post-quantum key exchange to the domain detectportal.firefox.com (the URL used by Firefox connection testing). This small change would significantly strengthen privacy protection for millions of users who rely on Firefox's connection test URL. As you know, this mechanism has already been successfully implemented on almost all of your other domains. Extending the same protection to detectportal.firefox.com would ensure consistency and close the remaining gap. Thank you very much for your ongoing work on privacy and post-quantum cryptography. I would greatly appreciate your attention to this request. Best regards, Anonymous

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."

В очередной раз пропали все мои вкладки! По непонятной причине, после очередного запуска браузера, все вкладки (около 50) не открылись - только 1 последняя! У меня в данном аккаунте был профиль КАТОК, он пропал и я не могу восстановить его и вкладки в нем. Если Вы мне не поможете я навсегда перестану пользоваться Вашим браузером, т.к. слишком часто пропадают все данные!

Recently Yahoo News loads and disappears running Firefox on MAC. I cleared the cookies in the settings but the problem still exists. There is no issues with Yahoo News running on Safari but Firefox has been my choice for years. Any help is greatly appreciated. Thank you.

Default homepage is yahoo. Since the update to version 149, if I do a search from yahoo, the new tab that opens with the search result is blank most of the time. I have to click reload for the search results to show up.

Is anybody else having that problem? Seems to be yahoo search specific but not 100% sure.

Dan

Device: Poco X3 Pro System Information: RAM: 6 GB + 5 GB extended RAM Kernel Version: 4.14.18 OS Version: MIUI 14 14.0.6

Issue Description: When I switch away from Firefox Mobile and return after even 1 second, the currently opened webpage refreshes every time.

Actual Behavior: Every time I leave Firefox briefly and come back, the webpage reloads.

Additional Notes: The phone is capable of keeping heavier apps in background. I am able to run PUBG Mobile and Call of Duty: Mobile at the same time without background issues, but Firefox still reloads tabs aggressively.

Troubleshooting Already Done: 1. Disabled battery optimization for Firefox 2. Enabled Firefox as locked app in recent apps 3. Disabled phantom process killer 4. Reinstalled Firefox

Firefox has been my browser of choice for well over 20 years. I have a game I play every day (from FaceBook) just this week when I try to go to it on my laptop - it says your browser does not support WebGL. it has always opened using Firefox - this is a new error message. and the computer is only 5 months old and has Windows 11 on it. I do not want to switch to Google or Edge.

Like I said - opening the app worked every day up until about a week ago. What gives?

I have been using Google Chrome for years having set it up to open the same 8 Tabs and several bookmarks. What I liked about it was that no matter what PC I went to once I logged into Chrome I was given the same confiuration across several PCs including Linux which I am gradually moving to. However to date I just cannot get my other PC's whether Linux or Windows to do the same. What I want to know is that can I open Firefox on any other PC, login and and get the same configurantion automatically? .