Firefox 技術支援討論區

I can't turn off lazy loading. I set the following about:config settings to "false":

browser.sessionstore.restore_on_demand browser.sessionstore.restore_tabs_lazily browser.sessionstore.restore_pinned_tabs_on_demand

Nothing changes. When I start Firefox, it simply won't load all tabs. How do I fix this?

After the latest update (117.0 64-bit) I now do not see the '+' sign in the tab bar. I have 40 tabs open (please, no negativity - it's always worked for me), but if I close all of the tabs it reappears. Re-open the original 42 tabs and it's gone again. Close them and it reappears, etc. Now for the fun bit: starting from scratch with a new window - the '+' is there, but open 20 more tabs and it goes.

I'm running version 118.02.2 (64-bit) of Firefox on Windows 12. I *always* have the 'Open previous windows and tabs' checked. Starting yesterday, Firefox opens with nothing other than a blank page. Luckily for me, this has happened in the past and I have a Bookmarks Menu folder with my default tabs saved. Even so, it's still frustrating.

I had two Firefox windows open. One had 100+ tabs open, the other had around 5 open. Like a klutz I accidentally closed the window with the 100+ tabs open instead of the other window. Now when Firefox restarts it opens the version with the 5 tabs.  :-( I read about lost tabs in Firefox. I have found a file with the 100+ tabs in it. It is called: upgrade.jsonlz4-20221007134813. But what do I do next to restore Firefox to restart with the 100+ tabs version? Thanks.

Sometimes when loading a page, and the page is slow to respond, I will see a strange situation: The page is totally blank (the F12 tool does not display page content). The refresh button is gray (disabled), or sometimes although the refresh button enabled, the url textbox is "about:blank", which means I cannot actually reload the page I want to read. I have to re-navigate to the page through the link in the previous link. I'm not sure whether I got across. I hope the issue can be fixed.

when i close a tab the app stays open in the task manager. The TM shows 14 open apps and I only have three tabs in my browser. That eats up memory for no reason.

In Firefox 114.0.2, the tab foreground color for most NYTimes.com pages initially is black, but after an instant, the foreground color now becomes gray. The background color is a similar gray, so the tab symbol for the NYTimes (beginning with an ornate letter T) cannot be distinguished from the background. The NYTimes tab foreground color used to remain black.

For an example, go to https://www.nytimes.com/. The tab foreground colors for some NYTimes pages remain black; for example, go to https://help.nytimes.com/hc/en-us. I think this tab foreground color change began recently, less than a month ago. This problem does not occur for web sites other than the NYTimes. Restarting my computer does not help. This tab color problem does not occur in Edge or Chrome.

Thanks for any info

Firefox has not been playing nice, and it is starting to worry me that if I continue to use it, my computer may suffer damage due to crashes.

It only seem to happen when I'm playing videos, such from YouTube and Twitch. It causes most of the time the tab to crash and require me to simply reload the page. There have been 2 times however that it has caused Windows OS to completely crash, requiring a restart. I have a picture of the error codes present, but one thing is shared between them. They all contain the reason EXCEPTION_ACCESS_VIOLATION_READ. This has pointed me to consider it to be the same issue. It may also be a issue with the new computer itself, or maybe something to do with the graphics card. I'll start with this first to see if it's something bigger or not.

I also hope that the trouble shooting data can also help, as I rather know how to fix this then be secretive with information that may help.

As as a final note, as of this moment, while being within safe mode/trouble shooting mode, no tabs have crashed yet. Hope this is a sign, but I'll keep it on just to make sure the videos aren't crashing anymore.

Within the last hour or so, I needed to close Firefox while installing an app (the setup was recommending to close all Windows programs).

Had 8 windows open.

Right-clicked on the Taskbar Firefox icon, then selected the option "close all windows" - it proceeds to close each window consecutively, asking me each time for manual confirmation whether to close this window with x tabs in it - and I just confirm each time.

So then after that setup is completed, I open Firefox again - the last closed window is restored (as per the settings);

then I click on History, "recently closed windows", and.... there's only 2 windows on that list. I restore those 2, and then the list is empty - nothing more to restore.

So if I had restarted the PC, it would've just restored the 8 windows upon reopening Firefox, as usual - but since I opted to just close Firefox like this, "close all windows", I just lost 5 windows.

So could anything be done here?

Something in the files? Maybe the C:\Users[user]\AppData\Roaming\Mozilla\Firefox\Profiles\4qu1kfr9.default-release\sessionstore-backups path? There's a file called "previous.jsonlz4" in there, something I could do with that one?

Or something else?

Any help would be appreciated!

Hi, Imaging that, firefox is open, I clicked on a button that opening new window, how I can merge this 2 window in 1, in fact I wanna have that new window as a tab.

Google Chrome have this already.

Thanks !

Firefox open tweeter's tabs only in private window, can i so something to fix this and be able to open it even in standard window please ?

im on mac os X 10,9,5 with firefox 78,15,0esr

My tabs toolbar does not extend across the entire laptop screen. Looks like it stops halfway, regardless of how many tabs are open. As tab number increases individual tab space narrows. How can I increase width to occupy full screen?

"Container Tabs" are unavailable in Firefox on my employer's corporate PC. The "Enable Container Tabs" option is missing in the Tab section in Settings. There is a notification "Your browser is being managed by your organization." Thus, the lack of container tabs may be due to corporate policy. However, I don't see anything on the Active Policies page except one irrelevant record: "InstallAddonsPermission Default false." Additionally, "Container Tabs" are unavailable only in Firefox. Nightly has them. But, Nightly is not officially supported by my company. I have tested several corporate PC and different versions of Firefox and Nightly. Is it a weird Firefox bug or something else?

it's extremely annoying to have to stop what i'm doing and play "lets find the active tab" when i have tons of youtube videos qued in open tabs. in opera, the logic is there out of the box, but in firefox, it doesn't exist. why such logic wouldn't exist is beyond me, but i see this as an annoying problem that needs fixed. i want to simply glance up at the tabs and see which one is playing without having to spend time digging through the open tabs to find the one that's playing or having to freakin memorize which one it was i don't have time for that.

i followed the guide in this thread: https://support.mozilla.org/en-US/questions/1291998 i did exactly everything as instructed but it did absolutely nothing, no change at all.

Hi, I have been using Firefox for many years now, but just recently it has annoyingly started to randomly scroll up or down. This may happen almost immediately, or it may only happen after a few minutes. This is extremely disconcerting when reading (for example) a large webpage or forum.

Initially I thought it was a faulty mouse. I tried swapping out the mouse, but then I discovered that even if I open the browser, scroll (using the scroll wheel on the mouse) partway down a page, and then immediately turn off both mouse and keyboard, it still randomly scrolls (usually up) after a few seconds. I have also tried to see if I can get any other application to do this, but no, it is definitely only Firefox.

A quick read online and somebody else mentioned "Enhanced mouse scroll" or something similar, but I think they are talking about a Windows "feature". I am running Ubuntu 20.04 64 bit with the latest version (98.0) of Firefox.

I have not changed any settings with my browser in recent times either, however there have been periodic Ubuntu updates, and this covers Firefox updates too. Any help would be appreciated, thank you.

Hello at Mozilla Support,

I'm having this issue where sometimes, when I double-click to download a link or open a downloads item, it opens the same bookmark page instead. This is the page, and not sure if it's alphabetical, since this pages starts with an 'a' "https://authorspublish.com/#optin" Wondering how I can get this to stop changing the page I am on and opening the bookmark.

Thanks, Sonya

I need pinned tabs to show their title, just like normal tabs. They currently only show an icon, but apart from the fact that in my case the icons are identical to one another so I can't know which one is which without hovering them, I'm more of a text person anyway.

So, how to make pinned tabs show their title?

I need to shrink the size of my tabs, which remains constant no matter how many are open. If I have four open, I get the "+" for a new tab at the end of the tab bar. If there are five open, the tabs consume the entire width of the browser window and the "+" sign disappears. It is not found in the "customize toolbar" menu. I have tried restoring tool bar defaults and changing the uidensity to 1, but neither change shrinks the size of the tabs or gives me the "+" option.

What do I need to do to get back to the way it used to work?

By mistake, I close a window with lots of opened tabs and can not get them back. In the past when this happened I went to history but now there's no available option in "recently closed windows".

A couple days ago, late, I accidentally closed my main Firefox window before a little window that I'd forgotten was there - and all my 76 tabs disappeared. 1st thing yesterday I tried - 3bar / history / recently closed tabs - but the only thing in there was the one tab from the small window. Urg! I tried that and - 3bar / history / manage - where I could see my tabs but could only restore 1 at a time - not good for 76 tabs. I read a bunch of different questions about this same issue, and tried the suggestions, including some app called scrounge, but none of these restored my tabs. Help!!!!