Firefox Support Forum

I'm a Reddit user and until today I used to login just fine. Now I get the error message "Incorrect username or password" when I try to login in Mozilla Firefox (version 119.0.1 (64-bit)). If I use Google Chrome or Microsoft Edge I log in with no problem.

Hi. I'm experiencing a severe lag between Audio & Video on Youtube (video lags audio by more than a second)

This ONLY happens on YT, ONLY on one PC (we have 3) and ONLY using Firefox. I've been through as much of YT as I can find, but nothing changes.

Running FF in safe mode eliminates the problem. I've checked all addons/extensions etc in normal mode, but none are enabled & can't find anything else which makes any difference.

Using Chrome/Edge/IE Explorer all are fine, using a different streaming service (UK TV Play/BBC iPlayer etc), all work fine with FF.

As a last resort, I deleted FF and all associated files, folders, registry entries and caches. Upon re-installing FF the problem returns.

I've tried running without antivirus protection, in case a firewall or somthing was messing with it, bit to no avail.

I'm totally flummoxed, so if anyone can shed some light, it'd be much appreciated. I really don't want to change to another browser as FF has served us well for years.............. but....y'know.

Thanks. Annie

I have "Open previous windows and tabs" checked in the settings, And have been using firefox in that manner for years, Like I would close the browser without thinking, And coming back to what i was working on. But today for some reason, I came back to all my tabs gone, And I openned multiple tabs and closed, And opened the browser again and there were no more tabs. (I know about ctrl+shift+N, But that is not automatic) Please help I really need this feature, As i don't like closing tabs!

.... when either trying to open them by clicking "open link in new tab" or by manually opening a new tab, then typing something into the browser-line.

This has been an issue for me now for several versions of firefox ever since like 6 Months ago. It is very annoying, especially after having finished typing a rather long website-adress or search phrase, then hitting enter only to get the new tab closed right into my face without any further comments.

Help would be >MUCH< appreciated!

Cheers~

YouTube videos on Firefox getting slower and jerky. After refreshing Firefox (Settings -> Help -> More troubleshooting information -> Refresh Firefox), it is OK, but only for a short while. Then the problem starts again. Same YouTube videos are running fine with Chrome at the same time.

Running Windows 11 Pro (Clean windows setup not long ago and the issue was there from the beginning.) German Language Firefox 116.0.2 Build ID 20230805021307 Intel CPU i7-1360P, 16 GB RAM, 1TB M.2 SSD

Would really appreciate a solution for the issue because I really like Firefox!

Here's two of the most recent IDs.

bp-c5abd077-4bfa-4dbb-bafc-3cbc40231102 bp-26752e4f-b3f6-436d-9eb3-554200231102

Edit: I have since tried the "Refresh Firefox" feature, which deletes all extensions, and still have the same problem. I have also turned off hardware acceleration, same results.

I have Firefox set to "Ask whether to open or save files" not to Save files. This never happened before, but now Firefox is not giving me the option to open or save files, and automatically starts the download without giving me the box with both options. I get the message Opening in x amount of time in the "Display the progress of ongoing download" button, instead of the remaining time of download where the file doesn't open when the download is finished.

How can this be corrected? I have a feeling something happened in a new version of Firefox.

It takes an extremely long time for documents (e.g., PDFs) to print when I print them from Firefox (compared to printing from the built-in Preview app). How can I resolve this so that I can print documents directly from Firefox without this long delay?

Browser: Firefox 105.0.1 OS: macOS 12.6 Installed Addons: 7TV, BetterTTV, Facebook Container, FrankerFaceZ, Merge Windows, Tab Auto Refresh, TWP - Translate Web Pages, uBlock Origin

From time to time i need to log into my ISP's website portal, yet from today which is since the update yesterday) it will not allow me to it has my log in details saved correctly, but when i try to log in the sit it says they are incorrect, which they are not.

At first I thought the issue was with my ISP's website, so I was on the phone to them and together we tried crhome and edge and the log ins worked just fine, but not with the Firefox browser.

So sadly either something you changed in that update seems to be messing with the log in on this site and possibly others or possibly one of the add ons I use with it together with the browser is now causing an issue and is interferring I wouldn't have the first clue.

If I try to attach or download (only with the Always ask you where to save files option turned on) a file in any website, the browser doesn't open the Files window. Drag and drop works. I am able to choose the download folder from the settings and upload any folder, though.

I'm running Firefox 103.0.1 on Linux Ubuntu 22.04 LTS.

www.google.com. PR_END_OF_FILE_ERROR www.facebook.com. PR_END_OF_FILE_ERROR Hi, This occurred after a moment of power loss during a thunderstorm on my Lenovo desktop. All my other sites as far as i can tell are ok. I used Edge and was able to access FB and Google on Desktop] i checked and the current version of firefox is installed on desktop

even weirder, i can access both google and FB on my laptop with firefox. I've tried syncing the two with having bookmarks etc. i can sync from laptop to desktop but not vise versa.

i thought I'd uninstall and reinstall firefox but i don't want to lose any info esp my Bookmarks on the Desktop hence why i was trying to sync the two.

My desktop is older, maybe 5-6 years, my laptop is 1 year old. Dunno if this matters. thanks, Jan

For the past 8-10 days, every time I try to log-on to: https://selfservice.telkom.co.za/rococo/public/content/interstitial I click "Login" under the Mobile & Home heading and I receive the following message returned.

Bad Request The request could not be understood by server due to malformed syntax.

I have used MS EDGE browser and do not get the same problem, it log's-on OK.

As such it seems that it is a Firefox problem.

Using Windows 11. I'm using a free Proton VPN. My Firefox version is 103.02. I want to be able to continue to use the VPN when using Firefox to check my gmail accounts. If I disconnect the VPN, Firefox lets me access my mail site without a problem. When I use the VPN connected, I'm getting a PR_END_OF_FILE_ERROR

Is there a way to keep the VPN on and connect with no error? Is there a Firefox setting I can change? I don't have proxy selected in Win 11 connections. Cache is cleared.

Dear Admin,

My firefox browser can't shown the correct myanmar unicode script when I type in google page and other websites also shown the wrongly font scripts that are unable to read. I'd asked to google and they said it is the font rendering problem and advice ask to your team for help. Please take a look and advice me how to fix it. I'd installed myanmar unicode font in browser and set as default. Other websites which are use Myanmar unicode are also shown the wrong script in firefox browser. The browser version is 103.0.1(64bit).

Thanks for your kind response, Htet Aung

Hey, Twitch dosnt work for me (error #4000) and neither do Reddit videos. Pictures and Youtube works and I could not find a solution online. Thank you for providing this awsome browser. please keep fighting for privacy.

I cannot seem to reach https://community.esri.com/ via Firefox but can reach it fine with Chrome and Edge.

Firefox says "The page isn’t redirecting properly. An error occurred during a connection to community.esri.com. This problem can sometimes be caused by disabling or refusing to accept cookies."

So I even added the page to list of Exceptions, but still cannot reach site.

Hello, I have a problem with firefox and it's recently unable to open Google and Youtube due to HTTP Strict Transport Security (HSTS) with an error Code : SEC_ERROR_UNKNOWN_ISSUER

I have done the steps in here : https://support.mozilla.org/en-US/kb/error-codes-secure-websites I don't have any third-party Antivirus

I have also do about:config security.enterprise_roots.enabled by changing to true. It works but unfortunately youtube is broken when i set it to true.

I can't also accept the risk and continue since there's no button that says it.

Thank you

Solutions tried but unsuccessful: 1. Checked page size. It is correct at (80 x 297mm) 2. Cleared browsing history, cache, site settings, etc from start of time. 3. I have put print_resolution to 0 in about:config 4. I have put scaling to 1 in about:config ([https://support.mozilla.org/en-US/que.../1297631]) 5. I have put shrink to true in about:config ([https://support.mozilla.org/en-US/que.../1297631]) 6. I have alternated values (1 and 9) of paper_data in about:config (https://support.mozilla.org/en-US/questions/1297631) 7. Uninstalled ticket printer driver, rebooted PC and then installed again (Xprinter XP-80C). 8. Uninstalled Firefox completely, rebooted PC and downloaded again from Firefox website. 9. I have tested on a Laser A4 printer from Firefox on that same PC. Works fine. 10. Attached is the scanned picture of print from Firefox 100. Firefox 100 11. Another attached contains the scanned picture of print (correct one!) when I re-installed Firefox 64 link text

I'm running Firefox Dev edition and I cannot get it to load any pages except for Mozilla pages. I have tried all the fixes suggested there and it still refuses to connect. I'm at my wits end. Any hail mary optoins or do I have to reinstall and start again?