Firefox Support Forum

In general, when downloading, authorizing on some sites, I have this problem - "Invalid redirect on page". Moreover, this error occurs only on the firefox engine, but not on chromium. I am writing from a browser Comodo IceDragon. The screenshot that I attached is in Russian.

Have set duckduckgo as default search engine but search just returns duckduckgo main page, not keyword search results when keywords are typed in search bar and hit search. If I revert to bing it shows results as usual. Change back to duckduck and it reverts to just showing duckduck main page again. Any suggestions

Some optimized mp4 do not play at all in any of my FF. From what I can see, this video is 10 fps and description says "Optimized using ezgif.com". Small and short videos. Lenghts seems to be correctly indicated by FF player frame.

All other MP4 play perfectly in any of my FFs. When I download such mp4 to my computer, VLC will play it normally. Any FF at this same computer will not! I repeat: all other videos play perfectly normal, including any MP4 I tried! Anything else on this same site plays normally. I am on Win 7.

I remove all security features I can, still, this single sort of videos are not playing and this is true for any such videos on this site. I tried 4 different versions of FF (v29, 60.9.0esr, v65 IceDragon, v71). They inherit configuration from the existing ones, so they are not clean installs. The same problem I have in several Win7 computers (two Virtual Machines and a real computer, not Win 7 N). FF safe mode does not help also.

Example page containing such mp4 with a cat: https://www.index.hr/lajk/poster/227148/vlasnici-su-snimili-svoju-smijesnu-macku-koja-se-moze-provuci-i-kroz-najmanji-prostor

and when I isolate just the video:

https://storage-lajkhr.index.hr/kiki/a727a5a6-734f-44d6-9ee8-42b857f22193.mp4

in FF I get only an empty black page and frame with player and no video at all.

What is wrong here?

My OS is Ubuntu. And I tried, but couldn't find an option in Cups, although something called a 'PrettyPage' flag seemed to be the closest thing I could find, but I know of no way to use it.

I just downloaded and installed Firefox 72.0.2 for my Mac. I had been using 67, which had become problematic with screen freezes requiring Force Quit. The 72.0.2 appeared to install, showing the new icon in the Dock. I opened it and updated Shockwave Flash to the latest, which asked for a restart of the browser. Once restarted, I tried to open Firefox a pop-up claimed the profile was missing or inaccessible, but I could find it easily in its normal place.

Websites show a spinning wheel and never finish loading. Initially websites worked fine. Suddenly, the websites showed a spinning wheel and never finish loading. It happens only with firefox (e.g. Safari works fine). It happens to every website.

Yesterday I received two separate emails (to my personal email account, separate from the one I used to post this message) from Firefox as part of a new account creation, neither of which I requested. The first included a link to confirm my email. The second included a verification code.

I've been using the FF 65 because FF didn't allowed the Simple Tab Groups add on for a while. Once FF allowed this add on again, I updated from 65 to 70. I completed the update and everything seems to work normal, but, when I restart the app: There is no master password, and all the saved logins are also gone. I know that FF has problems with the updates, so I copied my 65 version of FF an d also a copy of the profile. So I deleted the 70 and tried to update again, and the result is the same. It update's perfectly, but when I quit the app and open it again, master pass and logins are gone.

Does anyone knows what to do? Should I have to delete some file from the Profile?

Thanks in advance

Amazon Prime Video will not play. Just get yellow banner,"Firefox is installing components needed to play the audio or video on this page. Please try again later" Have tried the suggested toggle on off of drm and no change. Have no such problem with Chrome or with IE.

Whenever I open youtube on Firefox it randomly keeps reloading a specific channel, instead of staying on homepage. I DO NOT have youtube hugh definition add-on installed. What could possibly be the source of this? Most solutions I could find blames that one add on that I am not even using.

Hello. I have been using Firefox off-and-on since the version 2.0, and there has been one bug that is plaguing me since 10+ years, and that is this error message that occurs when I close down Firefox and try to immediately reopen it (sometimes I wait 2-3 seconds just to avoid this error to no avail).

I am using version 65.0.2 (x64) now on latest Windows 10 version (on an MSI laptop with a spec of Intel i7 8750H cpu, Kingston SSD, 16 gb dual channel RAM and Nvidia RTX 2070 graphics card) and have been encountering this bug daily, and it really became so annoying that I'm considering reverting back to Chrome (which NEVER had this bug). This problem usually occurs when my previous Firefox session had more than 4 or so tabs, etc. but it also occurs when I just try to close and reopen the Firefox to test if the bug persists and 1 out of 5 times I get this bug and have to wait around 10 seconds for Firefox to realize there is a leftover session and offer me to close it before being able to open a new tab/window.

I have tried removing the .lock file from the profile folder (which DOES NOT remove itself when I end my session and gets recreated each time I restart a session), checking off the read-only mark from the profile folder, creating another profile and disabling hardware accelerating; but none of these made the slightest impact on the frequency I experience this problem. This thread from official Mozilla support also didn't help (https://support.mozilla.org/en-US/kb/firefox-already-running-not-responding ).

Should I just accept that this is the way Firefox works and that I need to wait 5-6 sec or so before attempting to reopen Firefox (as suggested here https://www.howtogeek.com/131004/how-to-fix-the-firefox-is-already-running-error/ (which dates back to 2012 and saddens me deeply that 7 more years of development changed nothing on this front)), or shut the Firefox down each time by killing it from the Task Manager; or could there maybe a fix to this? I had recently ditched Chrome since it froze my computer (a very rare bug related to the newer Windows 10 versions which occured only once to me, but felt serious enough that I uninstalled it), but if I can't find a reliable fix to this problem, I will probably just go back to Chrome where the bugs won't affect my daily usage.

Thank you for your help.

I noticed that on some web site forums where I participate using Firefox as my browser that extra carriage returns are inserted without any action from me other than pressing Enter at the end of a paragraph resulting in double spacing between paras. Investigation with the site admins revealed that other Firefox users are experience the same problem and describe it as "Irritating." I visited the relevant thread with Chrome as my browser and did not get the extra carriage returns. Chrome inserted only one carriage return on pressing Enter - no line spacing resulted - whereas Firefox inserted 2 carriage returns with a single press on the Enter key resulting in double lines inserted.

Can anyone help?

Firefox (Quantum) is not printing everything on a particular page -- it only prints about half of the information.

But Chrome does print all of it.

We use Firefox here at work so I enter the data on Firefox and use Chrome to print it. I'm so confused as to why Firefox is only printing half of the data but Chrome prints all of it.

I have tried everything from the "printing issues" troubleshooting page including resetting the printer settings and also removing all lines in the prefs.js file that start with print_.

Please help. Thanks!

It takes 2, 3, sometimes 4 times to click in an input text box to type. Restarted to safe mode didn't work. I tried in normal mode with all extensions and add-ons disabled or off. Changed theme to normal. Disabled hardware acceleration. Uninstalled/reinstalled FF. None were successful. It works in Chrome and IE. I look at my keyboard to type cos I'm retarded. So when I click once and the page animates like it wants to select but it doesn't, I usually have typed an invisible paragraph before I realize I have been duped. It is not a huge thing, just annoying.

having 65.0.1 of firefox installed on windows 10 now I have problem with content blocking on a specific screen in ibm.com I do not see any content click on keylock : left of address bar I see : content blocked but I can not specify : do not block as this is the only place you can add exceptions.. am I missing something - I already passed in many threads and docs, but could not find a hint thanks for all help best regards, Guy Przytula

I frequently leave Firefox open with a video stream from twitch.tv full-screened on a second monitor while doing other things (playing games, text editing, etc). If I leave Firefox untouched for long enough (more than a couple minutes, less than an hour) playback will start to stutter or lag (usually video first, eventually audio as well). Clicking Firefox or alt-tabbing very frequently fixes the issue, playback immediately becomes smooth. This is not a recent change, I've observed this behavior for months and finally decided to ask about it.

I have no proof that this is a browser issue. It could be a site-specific issue, (I see it most often on twitch but I have also seen it on other video sites like youtube), an OS issue, or something else.

That said, I could easily imagine it being an intentional browser feature - if Firefox is not focused, throttle JS execution and other resources to save power. In many cases this could be phrased as a feature for the user. Does such a feature, and is it configurable? I've looked through about:config and done some googling and find no mention, but I'm asking here to make sure.

Windows 10 Pro x64 - Firefox 65.0.2 x64

Im just trying to have firefox have a dark theme, for everything. I want about:blank and about:newtab to be black background. why is this so complicated? I had to search for hours on this crap and write a custom css in chrome folder under default profile. I have it dark now but now it still flashes BRIGHT WHITE for a second before loading black. This shouldnt be so convoluted to fix. By the way, dark/black should be the default theme for every browser on planet earth. It would save millions from eyestrain/damage from harmful blue LED light from computer monitors and phone screens. Ive already selected default Dark Theme under themes. I tried the extension, Dark Background with Light Text. It now has interference from my custom css file I created, and wont work properly. Furthermore I cant change the new tab background on torbrowser either which is based off of firefox. Come on FF fix this nonsense, make customizing a theme EASY. its the simplest part of a website, the styling. And the fact that I click Dark Theme and everything should be dark, ITS NOT. about : blank and new tab are still GLARING WHITE! AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

Hello,

I love FF and have used it for many years. However, every time I open it, I have to adjust the initial window size and then at least 1 more new window. I am using 65.0.2 64 bit on a Windows 7 machine. I was reading and saw a suggestion to use the command line switches to set the window width and height. So I made a shortcut with the target line as "C:\Program Files\Mozilla Firefox\firefox.exe" -height 850 -width 1800. This doesn't work. So what am I doing wrong or is there an easier way to accomplish this? I am very surprised that there is nothing in the about:config that would allow this type of customization. I also am baffled at what window size is presumed by FF.

Thanks for your help in advance!