Diễn đàn hỗ trợ Firefox

I turned my computer on; Mozilla wanted to update, so I said yes. Then I got this:

XUL Runner Error: Platform version '120.0.1' is not compatible with minVersion>=120.0 maxVersion<=120.0

And now I have no Mozilla. Restarting the computer didn't help. How do I get the old version back? I really absolutely must have all my bookmarks back....I use them for work!

How do I stop firefox from automatically downloading files from the internet when I click on them - without even asking me if I want to download them in the first place. In "Applications", selecting "Always Ask" in "Choose how firefox handles files etc" does not work. Firefox never asks. If it cannot be disabled, I will have to stop using Firefox.

My profile is not able to recover saved password. Logins.json file copied in the new profile but password not visible. In the default profile logins.json.corrupt appeared. I am looking for a procedure to recover information in corrupted profile. Can you help?

My firefox just crashed and despite having sync active, saved ZERO of my dozens of tabs. in restarting, i see that despite sync still "on", it is only syncing a handful of tabs, and doesn't even update when i do so manually. am on a windows machine, but use firefox on two of these in addition to android.

will be switching to brave full time without Mozilla's help here.

thanks, z

Greetings,

My Firefox keeps crashing randomly even though it's a new PC with very capable good hardware. My old laptop used to run 100s of tabs without any issues.

However, on this new PC, the crashes are fucked even though I barely have about 20 tabs open.

Here are some crashing reports:

https://crash-stats.mozilla.org/report/index/cd41eedb-d3a3-4717-8210-d3ea70231230

https://crash-stats.mozilla.org/report/index/4f72d2f1-70e6-4499-9078-7a7760231230

https://crash-stats.mozilla.org/report/index/c43bd61d-248d-42de-aa40-fd6490231230

https://crash-stats.mozilla.org/report/index/9dc3e8b9-6871-4d4c-940d-83fa40231111

https://crash-stats.mozilla.org/report/index/61c7b9d7-bbc9-41e1-969e-7396e0231230

https://crash-stats.mozilla.org/report/index/646b38fc-e2d6-4376-8310-537960231230

https://crash-stats.mozilla.org/report/index/da22561f-eb48-4dd2-ac61-b3d7e0231230

https://crash-stats.mozilla.org/report/index/823b8e27-a69a-4251-bf71-587ec0231230

https://crash-stats.mozilla.org/report/index/6fd3ae37-b8ef-4048-ab0b-0c9c60231230

https://crash-stats.mozilla.org/report/index/22e4ea87-2622-4c2d-b731-76b2b0231230

https://crash-stats.mozilla.org/report/index/9eac33bf-dd2c-437e-a2c9-96fc90231230

Kindly help. Thank you.

For some reason when I try to download a screenshot of [this tweet] it fails every time; I tested it and it's just that tweet specifically. This has never happened before and I assume it's just a bug since copy-pasting still works. Any help with this?

Yesterday Firefox started closing at random, sometimes instantly as soon as I open it. The crash dialog doesn't open, and if I go to about:crashes my most recent unreported crash is from 2019. Tried refreshing, reinstalling, completely wiping all profiles and starting fresh. If I use troubleshooting mode it won't open properly at all. I am at a bit of a loss, any ideas?

After installing Thunderbird i had first download problems for new Firefox Versions. I tested around, installed everything new and found the solution. Somehow the Maintenance Service didn`t work properly on my machine and after deinstalling and restarting i can update firefox again. Problem remains: When trying to install Offline Languages , see picture, i get the message that it does not work. I tried everything possible, including reinstalling and deleting all old profiles (was a lot of work). Any ideas?

Yesterday on my linux computer I noticed that my container setup ise back to the default setting. Now I'm using my windows laptop, and it is als back to the defaults. I'm afraid the same thing will happen when I start using my windows desktop. Should I poll the network cable and delete my firefox sync data, so I can hopefully save my containers setup? Or is this not going to help, and I'm fucked anyway :)

Hello

Just to report Firefox 121.0.1 (64-bit) unable to upload any video formats on youtube and always having invalid video format error. I'm unable to upload even that videos what was already successfully uploaded some times ago. I using Microsoft Edge now to upload on youtube and it is fine with all my videos. Hope you can fix soon.

The pinned shortcuts on my newtab page have all disappeared once again. I've gone to about:config > browser.newtabpage.pinned and my shortcuts are all listed. But only blank boxes show up on the page. It will not accept a new entry when I try to enter one. It goes back to the blank white box. Why does this keep happening? Can anyone give me a Firefox for Dummies way to fix this?? Thanks!

Email removed for privacy

I recently upgraded from Window 7 to windows 10. Ever since, the spacing between the bookmarks has significantly increased. I read several post about this and they all seem to be looking for something in Firefox. I think it has to do with something in windows 10, not Firefox. Any ideas? I've already done the Density/Compact thing. Slight improvement, but not anything like it was under Window 7.

Yesterday I was playing videos on rumble fine. Sat my laptop down, picked it back up after waking up and suddenly no sound on any rumble.com video. Youtube plays video and audio fine. So does X and truth social. In fact, any website plays audio EXCEPT rumble.com. Its not Windows related. Its firefox related. I installed Chrome and rumble.com plays with sound fine. I uninstalled firefox and reinstalled and that didnt fix it. I have rumble installed via WebCatalog an it plays videos and audio fine. I then installed Firefox nightly and never signed in or anything and still rumble isnt playing sound. Its rumble+firefox=no sound. And it appears to be happening to others too on other help forums. DOES ANYONE KNOW HOW TO FIX THIS?

On all sites where I need to login with my work account I get a tab crash when the browser redirects to https://login.microsoftonline.com/ac4b0eb0-811e-4ab0-acca-8a87079290dc/oauth2/v2.0/authorize?response_type=id_token&scope=user.read......

This is a recent failure (this week), that occured without any changes on my own account to Firefox developer version 121.0b2(64-bits)

I had to install google chrome to overcome this problem. Chrome has no issues with microsoft authentication.

Please solve as soon as possible, otherwise I will be switching to another browser.

Getting to www.costco.ca impossible during past few days - disabling tracking does nothing! Tried relaxing most security and tracking settings, still no results. MS Edge works just fine, like Firefox used to until now. Guess it's time to switch if no other option.

previously FireFox was able to login Spotify normally, and was able to post comments on Reddit, but suddenly it lost both abilities, and with the extreme lag on other sites, although still functional, i can't understand why these both sites can't be logged into, or can't post any comments in them. it has been this case for the past month. so what's going on? i'm NOT going back to Chromium based browsers ever again! i am in FireFox for a permanent replacement!

thanks in advance.

So I just picked up a new laptop (ASUS Vivobook 16x), and everything is fresh on it. Additionally, this only affects some video content in Firefox, with Edge browser unaffected. In brief, what is happening is that within a couple hours of having the browser open, certain video content stops working, specifically Twitter/X videos just spin, YouTube previews stop working, and videos continually load. Netflix videos continue to work, but hover previews stop functioning. I even check the 'Stats for Nerds' on YT and it shows 0 KB network activity in Firefox.

I've tried every basic action I can think of:

• Turning off extensions (only use Ublock and Bitwarden)
• Browser Refresh (x3)
• Reverting from 120.1 to 120.0, and now 199.0.1
• Clearing the browser cache
• Reinstalling NVidia and Intel Drivers
• Running in Safe Mode

Only by doing a refresh or completely closing/opening the app gets videos to function again. This doesn't affect the old laptop or my desktop, which makes me think it's a rogue driver--but then why would Edge function without error over the same period of time?

Are there any settings to play with in the browser that can help diagnose?

Firefox is my longstanding browser (on Windows 10). I wish to make use of the Firefox PDF viewer, but have been unable to gain access to it. If for the purposes of an attachment I click on "Open with", Firefox does not appear among the viewers offered. I'm not tech savvy, so a step by step (idiot's) guide as how I can gain access to and then make use of the Firefox as my default PDF viewer will be greatly appreciated, please.