Firefox Community Forum

I suppose this is a kind of support question, of sorts, but in my opinion this also has to be treated as a complaint, in a sense.

About one and a half months ago, Firefox became unresponsive, that is, it became awfully slow. I experienced just about every issue with the browser that was mentioned in the following support pages and support issues (posted by others) and I read all of those :

Websites don't load - troubleshoot and fix error messages

https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors#w_the-problem-only-happens-with-certain-websites

firefox is extremely slow or fails to load sites

https://support.mozilla.org/en-US/questions/1550371

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

Secure connection and security warning error pages in Firefox https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect

An oddball situation had occurred in which I couldn't for the likes of me go to my librarything.com homepage at each restart of the previous Firefox session, which also causes lagging when the session wants to connect to the other (normally unproblematic) website session tabs, and I also get multiple connection errors + insecure connection notifications for some of these websites. (sometimes refreshing a page does not help, sometimes it does)

I got bored reading all those support pages and trying out the solutions, because nothing seemed to help. In the long run, I decided to de-install the whole browser after backing up bookmarks, speeddial settings, passwords and the whole profile. Simultaneously, I also tested the connectivity to these websites in another browser (Brave) and this did not present me with any problem.

So I did the following :

1) deleted the whole cache and closed the browser 2) uninstalled FF with Revo Uninstaller (which has an option to remove all remnant files / folders/ registry items on the Hard Drive) 3) made sure to remove all cached leftovers from HD by using multiple cleanup tools in succession : 1) Wise Disk Cleaner followed by 2) Bleachbit followed by 3) CCleaner

Went to the mozilla website, downloaded and installed the last version of FF. Next, imported bookmarks, speeddial settings and passwords. Next, reinstalled the Firefox extensions I used before (without any lag until one and a half months ago). I also did NOT copy the stored profile but decided on starting afresh with a new profile.

Everything worked lightning fast and efficiently until a few days ago, when I received an automatic update of Firefox - 151.0.3 - and all of a sudden, the same problems are reoccurring. And again, I can't connect to an unproblematic website like librarything.com, whereas before the update I was able to without any problem !!!

What the hell is going on with these auto-updates ???

Сегодня обновил Mozilla FireFox до версии 146.0 (64-разрядный). После обновления в панели "закладки" (cntrl+B) появился ненужный мне цвет выделения только что открытой мною вкладки (смотри скриншот). Как поменять данный цвет на менее контрастный ? У меня включена "темная тема", цвет выделения - ядовито-голубой. Хочу изменить его на другой более мягкий цвет. Как это я могу сделать?

Today I updated Mozilla Firefox to version 146.0 (64-bit). After the update, the highlight color of the tab I just opened appeared in the bookmarks bar (Cntrl+B) in an unwanted way (see screenshot). How can I change this color to a less contrasting one? I have the "dark theme" enabled, and the highlight color is a bright blue. I want to change it to a softer color. How can I do this?

with this new version i lost everything i need to get back to an older version and get all my extentions my bookmarks back all my s desktop items that i had linked to firefox are gone i can no longer get face book or anything back to firefox book marks every thing i had with firefox

and

My question is a very obvious one if you look at the two screenshots I've attached. The 'X' to close the Firefox browser keeps disappearing, along with the 'maximize' and 'minimize' options as well. This has been happening for months. The recurrence rate is 50/50 each time I open the FF browser. It's not just an issue with closing or minimizing a page, it also removes the access to my Windows taskbar at the bottom!! Normally, when I move my mouse to the bottom, my taskbar pops up and I can access whatever I need, BUT when the FF browser has NO 'X' at the top corner, my taskbar won't show up at all! This is finally getting on my last nerve!🤦♀

Any knowledge as to why this keeps happening?🤷♀

My FF browser is up to date, as of yesterday. My default search engine is google. My PC is still running Windows 10.....could this be the problem?

I have news max as my default home page . it did this once before on Firefox and i thought i fixed it it works on Chrome. I tried clearing cookies and syill get this why

Hello, Im using localized (Lithuanian) version of Firefox. Several updates back, Firefox started including russian and Polish in preferred languages by default. Personally i know how to remove those for myself. However, since im managing around 300 computers in a school. This starts to become an issue. In Lithuania we only have one official language. And when pages in a school start opening in foreign (russian) language this starts to be quite annoying. I would love to keep using Firefox but i need help.

Sync just does NOT work. I installed FF on my Mac brand new and fresh... brand new machine. Signed into Sync. NOTHING. After 6-7 HOURS... nothing. It just gets NOTHING AT ALL from my Windows Desktop.

I've signed out of ALL Firefox/Mozilla sync sessions... signed in clean- all browsers are up to date. And the about:sync-log page shows a LONG streak of errors... NON STOP ERRORS.

Why?! Why can't we just sync extensions to install and bookmarks across machines? How is this that hard for Mozilla?!

The sync-log page list: File:error-sync-1714085057059.txt 6 KB 4/25/2024 17:44:17 File:error-sync-1714088658041.txt 18 KB 4/25/2024 18:44:18 File:error-sync-1714189161327.txt 6 KB 4/26/2024 22:39:21 File:error-sync-1714498425099.txt 13 KB 4/30/2024 12:33:45 File:error-sync-1714588968223.txt 10 KB 5/1/2024 13:42:48 File:error-sync-1714589121080.txt 9 KB 5/1/2024 13:45:21 File:error-sync-1714600674960.txt 7 KB 5/1/2024 16:57:55 File:error-sync-1714604277834.txt 24 KB 5/1/2024 17:57:57 File:error-sync-1714838021899.txt 24 KB 5/4/2024 10:53:41 File:error-sync-1714839602488.txt 11 KB 5/4/2024 11:20:02 File:error-sync-1714839613709.txt 10 KB 5/4/2024 11:20:13 File:error-sync-1714844303035.txt 16 KB 5/4/2024 12:38:23 File:error-sync-1714844919123.txt 15 KB 5/4/2024 12:48:39 File:error-sync-1714846872373.txt 17 KB 5/4/2024 13:21:12 File:error-sync-1714846956569.txt 12 KB 5/4/2024 13:22:36 File:error-sync-1714941772713.txt 15 KB 5/5/2024 15:42:52 File:error-sync-1714941774043.txt 14 KB 5/5/2024 15:42:54 File:error-sync-1714941849730.txt 14 KB 5/5/2024 15:44:09 File:error-sync-1714942633097.txt 14 KB 5/5/2024 15:57:13 File:error-sync-1714942674714.txt 48 KB 5/5/2024 15:57:54

Day after day and attempt after attempt of failures for a basic function of the browser.

Here is the text of the latest log and showing constant connection errors- mind you NOTHING is breaking on my internet as I'm often streaming things and watching stuff while surfing, or others in the house are. Our connection, and Firefox getting online, are all working fine. I am at a loss. I don't understand how this is so terribly broken out of the box that you can't just sign in and let it talk to their servers. I know Google has billions behind Chrome, but this shouldn't be so 1990's bad by comparison to Chrome sync.

1714081299909 Sync.SyncScheduler DEBUG Next sync in 3600000 ms. (why=schedule) 1714081300746 Sync.SyncScheduler DEBUG Network link status changed to "changed". Offline?: false 1714082945349 Sync.SyncScheduler DEBUG Network link status changed to "changed". Offline?: false 1714082945373 Sync.SyncScheduler DEBUG Network link status changed to "down". Offline?: false 1714082945373 Sync.SyncScheduler DEBUG Clearing sync triggers and the global score. 1714082945374 Sync.SyncScheduler DEBUG Next sync in 3600000 ms. (why=schedule) 1714085055761 Sync.SyncScheduler DEBUG Woke from sleep. 1714085056643 Sync.SyncScheduler DEBUG Network link status changed to "changed". Offline?: false 1714085056786 Sync.SyncScheduler DEBUG Network link status changed to "up". Offline?: false 1714085056786 Sync.SyncScheduler DEBUG Network link looks up. Syncing. 1714085056899 Sync.SyncScheduler DEBUG Network link status changed to "changed". Offline?: false 1714085056902 Sync.Service DEBUG User-Agent: Firefox/125.0.2 (Windows NT 10.0; Win64; x64) FxSync/1.127.0.20240419144423.desktop 1714085056902 Sync.Service INFO Starting sync at 2024-04-25 17:44:16 in browser session V0xN5aUmAS9A 1714085056902 Sync.SyncScheduler DEBUG Clearing sync triggers and the global score. 1714085056904 Sync.Status INFO Resetting Status. 1714085056904 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok 1714085056904 FirefoxAccounts DEBUG FxAccountsProfileClient: Requested profile 1714085056904 FirefoxAccounts DEBUG getOAuthToken enter 1714085056905 FirefoxAccounts TRACE getCachedToken returning cached token 1714085056905 FirefoxAccounts DEBUG getOAuthToken returning a cached token 1714085056905 Services.Common.RESTRequest DEBUG GET request to https://profile.accounts.firefox.com/v1/profile 1714085056905 Sync.SyncAuthManager INFO Getting sync key 1714085056905 FirefoxAccounts DEBUG getOAuthToken enter 1714085056905 FirefoxAccounts TRACE getCachedToken returning cached token 1714085056905 FirefoxAccounts DEBUG getOAuthToken returning a cached token 1714085056905 Sync.SyncAuthManager INFO Getting a sync token from: https://token.services.mozilla.com/1.0/sync/1.5 1714085056905 Sync.SyncAuthManager DEBUG Getting a token using OAuth 1714085056905 Services.Common.TokenServerClient DEBUG Beginning OAuth token exchange: https://token.services.mozilla.com/1.0/sync/1.5 1714085056906 Services.Common.RESTRequest DEBUG GET request to https://token.services.mozilla.com/1.0/sync/1.5 1714085057025 Services.Common.RESTRequest DEBUG GET https://profile.accounts.firefox.com/v1/profile failed: 2152398878 - NS_ERROR_UNKNOWN_HOST 1714085057025 FirefoxAccounts ERROR Background refresh of profile failed: {"name":"FxAccountsProfileClientError","code":null,"errno":998,"error":"NETWORK_ERROR","message":"[Exception... \"NS_ERROR_UNKNOWN_HOST\" nsresult: \"0x804b001e (NS_ERROR_UNKNOWN_HOST)\" location: \"JS frame :: resource://services-common/rest.sys.mjs :: onStopRequest :: line 478\" data: no]"} 1714085057031 Services.Common.RESTRequest DEBUG GET https://token.services.mozilla.com/1.0/sync/1.5 failed: 2152398878 - NS_ERROR_UNKNOWN_HOST 1714085057031 Sync.SyncAuthManager ERROR Non-authentication error in _fetchTokenForUser: TokenServerClientNetworkError({"error":{}})(resource://services-common/tokenserverclient.sys.mjs:28:36) JS Stack trace: TokenServerClientNetworkError@tokenserverclient.sys.mjs:51:16 _tokenServerExchangeRequest@tokenserverclient.sys.mjs:235:13 1714085057031 Sync.Status DEBUG Status.login: success.login => error.login.reason.network 1714085057031 Sync.Status DEBUG Status.service: success.status_ok => error.login.failed 1714085057031 Sync.SyncAuthManager ERROR Failed to fetch a token for authentication: TokenServerClientNetworkError({"error":{}})(resource://services-common/tokenserverclient.sys.mjs:28:36) JS Stack trace: TokenServerClientNetworkError@tokenserverclient.sys.mjs:51:16 _tokenServerExchangeRequest@tokenserverclient.sys.mjs:235:13 1714085057032 FirefoxAccounts TRACE not checking freshness of profile as it remains recent 1714085057055 Sync.Resource WARN GET request to https://sync-1-us-west1-g.sync.services.mozilla.com/1.5/209631697/info/collections failed: [Exception... "The lookup of the hostname failed" nsresult: "0x804b001e (NS_ERROR_UNKNOWN_HOST)" location: "<unknown>" data: no] No traceback available 1714085057056 Sync.Status DEBUG Status.sync: success.sync => error.login.reason.network 1714085057056 Sync.Status DEBUG Status.service: error.login.failed => error.sync.failed 1714085057056 Sync.ErrorHandler ERROR Sync encountered an error: [Exception... "The lookup of the hostname failed" nsresult: "0x804b001e (NS_ERROR_UNKNOWN_HOST)" location: "<unknown>" data: no] No traceback available 1714085057056 Sync.SyncScheduler DEBUG Next sync in 3600000 ms. (why=reschedule) 1714085057057 Sync.Telemetry INFO Early submission of sync telemetry due to changed IDs/NodeType 1714085057059 Sync.Service DEBUG Exception calling anonymous function: [Exception... "The lookup of the hostname failed" nsresult: "0x804b001e (NS_ERROR_UNKNOWN_HOST)" location: "<unknown>" data: no] No traceback available

I am unable to use my bill pay with my bank using Firefox browser. However, I am able to use it logging on with Microsoft Edge. What has changed with Firefox recently? This has only become a problem as of today.

Since latest upgrade (1/16/2026) I cannot log in to Outlook email. This is specific to Firefox 147.0.1 (Chrome and Pop Peeper logins to Outlook work fine). I tried clearing cache, updating, restarting, rebooting, trouble-shooting mode, private window etc. to no avail. I get 400 error from Outlook.

I was wonder when the next browser update may be come as I would like to watch YouTube on Firefox again. As it has been over a month since the last update that made it so YouTube doesn't load the video anymore. (I have tried every suggestion online to correct this and nothing)

I tried a 2022 sourced help answer result content but it was broken, and that seemed to be the most recent gainful help response connected to my issue, another variant from elsewhere did not work at all, it was probably older still, so I need working code for the most recent version of Firefox Browser, or however recent enough to not so conflict. Much Appreciated.

Greetings Ya'll, Firefox Bookmarks are no longer being initially placed in "Other Bookmarks, they are now being placed in the "Bookmarks" that is under the "Open Application Menu" Tab.

I've found that the "New Bookmarks" can be "Dragged" as a copy to "Bookmarks", from the "Bookmarks" located in the menu, for they will stay there unless I delete them

I can not move the "Bookmarks" back to "Other Bookmarks"

Would I lose My Bookmarks, If I "Refresh" Firefox, as suggested in the "Troubleshooting Section? If there is a chance of this happening then that would Absolutely Be Catastrophic!!

Updated to esr 128.14 Now Reddit (Redgifs) Hosting site for gifs crashes Firefox and cripples my PC. I've tried restarting in safe mode, then refreshing Firefox. Nothing is working. Reddit support just has an issue with the Gifs not playing, but nothing as extreme as what iam experiencing. I believe it may be something is preferences or a codec or something that was changed in the recent update. Any advice/ help would be great. Edit: OS is windows 10 latest updates Amd- Ryzen 7/32gig 3.20 ghz PC. So can handle a little bit of heavy browsing.. FF 128.14 esr Ext- Ublock Origin

       Search By Image 
       Flash and Download Video. 

Even with Addons disabled still occurs. Really at a loss here.

How come FF translates sites in tiny, irrelevant languages like Bulgarian, but not from major languages like Chinese and Arabic?!?

I wish I could dump Edge, but this FF deficit forces me to keep Edge on my computer...

I've asked about this before but got no help Firefox is my browser of choice. Occasionally, I find in necessary to use Chrome.

The vast majority of time, when are both are active at the same time, one or both crash, like today. Firefox closed abruptly, then the crash report appeared. I have the crash report. Chrome froze up, and had to be shut down in Task Manager.

It only occurs in this scenario. Rarely does Firefox crash otherwise.

Can someone please advise where to go to get help?

I'm having issues using Firefox with the Facebook site. Groups are slow to load and sometimes the chat and notification windows take forever to load with shimmering panels or a wait cursor displayed. I've cleared the cache and deleted the cookie, but that didn't rectify the issue. I don't have a problem with Edge.

Sometimes when I sign in on Microsoft Outlook's email portal - a multistep process requiring authentication on one's phone - it says: "Hang on a minute while we sign you out" and then boots me, forcing me to sign in again. For awhile this was happening only occasionally, and the workaround was to delete all cookies for Microsoft online and Office. But now this is happening more frequently, and sometimes it happens immediately after deleting the cookies. In effect, Outlook on Firefox creates cookies that then prevent it from working. And it doesn't matter whether you say yes or no to "Stay signed in?" at the end of the sign-in process.

I reached out to Microsoft tech support, and they basically said this is a Firefox issue because it doesn't happen on Chrome or Edge.

Anyone else encounter this?