Diễn đàn hỗ trợ Firefox

PR_END_OF_FILE_ERROR how do I get rid of this error that keeps popping up when I attempt to launch Amazon.com I have never had this happen before..... it just started about a week ago.

After using gnome-tweaks to change my system fonts, Firefox has unexpectedly gone silent and no longer shows text in areas like the search bar, tabs, settings, bookmarks, and menus. Rendering websites works just fine, but Firefox itself won't show any text.

When i try to open youtube.com for example i used to only type in you or even you y for firefox to finish the whole URL for me, but sometime last month it dissapeared and never figuered out why after ALOT of trouble shooting to the point where I felt the need to create a new firefox account. Can you fix this for me? or just make everything deafult?

since the update today my browser's been really slow to stream video across the board.

i fixed this a few months ago by turning hardware acceleration off and i tried to check if it had been turned back on and the entire option is completely gone from the performance section in settings.

i dont see an option anywhere else to change this, and i really dont want to switch back to chrome for streaming. is there a hidden option somewhere that im missing?

Firefox often display messages at the lower right corners - only from selected sites.

It drives my crazy - because I have to click on each and ervy one.

How can I select the sites which are displayed or can I shut them off all together ?!?

Please advise !

Hi,

I've been using the following in userChrome.css for many years

1. menu_close { display: -moz-box !important; }

to restore "Close Tab" in the File menu, based on cor-el's response regarding restoring menu_bookmarkAllTabs here:

https://support.mozilla.org/en-US/questions/799856

This stopped working some time ago and I am finally getting around to asking why.

I do have toolkit.legacyUserProfileCustomizations.stylesheets set to true, and other items in userChrome.css are working.

I am using 121.0 at home and 115.0 ESR at work and see the same (i.e. no "Close Tab"), in both cases on Debian testing. I do see this menu item when using the keyboard to open the File menu.

Any idea why this no longer works?

thank you, Greg

Firefox. LinuxMint 21.3 Cinnamon 6.0.4 , Google Mail Compose, Pressing and holding the arrow key moves the cursor one character at a time. Google Chrome works fine.

I have attached images of what slowly occurs when I don't clear my cookies, websites start to slowly and slowly load less and less until they eventually completely break and wont load and I have to clear my cookies, resign into everything. and rinse and repeat every few days or a week, I also attached an image of what the purchase screen is supposed to look like. Looking at this via Microsoft edge

Goodd day from UK I run firefox esr 115.9.1 and find the the F5 refresh key does NOT refresh the images. The same applies when using the "reload" icon in the menu.

Reading other posts, nothing seems to apply here.

There are NO add-ons at all and everything is cleared on close. The text DOES seem to change.

As a web developer checking updates this is extremely annoying as only hope is keep closing the browser (to clear everything) and restart - the loads new images etc.

I use several versions of Firefox (2, 20, 56) to ensure compatability with olf browsers and it seems to be only those over 100 with this issue.

Does anyone know if this is a "feature" or a"bug" and is there any simple (!) way around the issue?

Thanks

p.s. ALWAYS happens, not intermittently

I use Mozilla as my browser on Windows 7. When I click on Mozilla I get an Error page which reads, " Server Error in "/" Application. Runtime Error. Not sure how to fix this. Can you help. Thank-you

I use firefox with duckduckgo as my search engine.Every search was becoming so slow so I went to settings and deleted cookies and site data thinking this would unclog things. Now I cant access any site. Is there a way to reinstate this data?

Firefox version 122.0 Mac: Sonoma 14.1.1 apple silicon

The problem emerged about a little over a year ago (around September 2022). It started with an installation of firefox on another machine running BigSur, and I guess the problem got ported when I restored a time machine backup on this current machine. I attempted to troubleshoot the issue by following mozilla support and reddit threads but to no avail. I, at the time, settled on monthly time machine backups, but now finally decided to address it properly.

Troubleshooting steps that I have followed:

• going into the about:config page and changing the places.history.expiration.max_pages and places.history.expiration.transient_current_max_pages to 2147483647 then to 999999 after reading about how a value too high might be ignored (both values didn't seem to change anything)
• going into the about:config page and changing the places.history.expiration.transient_optimal_database_size to 85534800
• removing the add-on/extension manager as seeing that it might remove history for some reason (from a [thread] by IceTemple)
• In the privacy and security tab, history is set to Firefox will use custom settings for history

Things I suspect might be the problem:

• I originally used the Chinese version of firefox (downloaded from the .cn website) and reinstalled the international version (from .com) after getting annoyed by the built-in ads. For convenience sake, I ported the profile folder over which might have carry the problem over. That being said, I don't think this problem existed when I just started using firefox but appeared awhile later.
• result of an update, don't know which though
• certain extensions (I haven't went through them individually since I installed a lot)

My questions:

1. How to stop Firefox from doing this ever again?
2. Alternatives of storing history if nothing works
3. Why did my troubleshooting steps not work? Is there something wrong with my version of firefox that prevented the about:config changes from working?
4. If I have to resort to backing up the places.sqlite history file, how do I restore/reintegrate them with current history file?

English isn't my first language so I apologize for any confusion that may arise due to how I articulate. Any help is much appreciated

Blank Page when clicking on tracking link from UPS website, https://www.ups.com/track?loc=en_US How do I fix this ? Thanks

I have two end users that are having a different issues but they are of similar nature. First user can not upload anything to Microsoft Share point. She gets a message that says she does not have proper permissions to upload. She does not have the same issue on Chrome or Edge. The second user is trying to download and or save a file from a couple of different websites but regardless on where she tries to save it on her computer it says she does not have proper permissions to save to "x" file location. She also does not have this issue when she is on Chrome or Edge.

For both users I have tried clearing cache and cookies, Rebooting their computers, uninstalling and reinstalling Firefox, deleting registry keys/user data from the computer itself. I have had no luck with resolving this issue and I can not find anything online that remotely resembles this issue.

Thank you and please advise

Hello Mozilla Support, I want to ask how to turn off suggested websites on my home shortcut. I searched on the internet, but everything I tried didn't work.

From Alex