Firefox Community Forum

Hello, often after waking the PC from sleep and trying to search for something, it is stuck on loading the web page/search. So after I close Firefox and try to open it again, it says it is already running and must be closed. If I click on Close Firefox, the dialog box closes for a while but reappears with the same message. When I want to kill the process with Task Manager, it says Access is denied, and the only way to open Firefox again is by restarting the PC.

Hello All,

I seem to have a problem with Firefox freezing. I moved back again to Firefox to maintain the adblockers that Chrome so graciously crippled.

Now, with that out of the way, I noticed that sites that have autoplaying MPEG-4 files that basically act like good old-fashioned gifs tend to cause the firefox to freeze.

It is a strange freeze though - the whole browser becomes VISUALLY unresponsive, but if I click blindly, say to close the tab or if I scroll up or down it appears to work. How do I know? Well, if I drag the mouse to the bottom of the taskbar in Windows and bring up the thumbnail... It unfreezes the browser - showing the changes I made blindly, at least until it freezes again when the MPEG-4 files start playing again. The freezes are not temporary either - I need to unfreeze through this thumbnail method I described above - otherwise it stays frozen.

The issue is not consistent either. Sometimes it goes through the MPEG-4 files perfectly fine, but usually scrolling through any thread containing embedded MPEG-4 videos, like reaction clips and the like, is literally impossible due to the rate of freezes.

Furthermore - this issue does not seem to occur when MPEG-4 videos are embedded on site itself, but freezes occur when the files appear in comments on imageboards and such.

I have narrowed down the culprit - the issues ceases when I disable the hardware acceleration, but I do not find it to be an acceptable solution in a long term - because disabling it causes various videos to play at noticeably lower and unpleasant framerates.

I'm fairly convinced it is NOT a hardware or software issue on my end - it is a brand new and powerful PC with a fresh install of Windows 11 and all the drivers are up to date, AMD GPU. Unless the issue is with some obscure codec, perhaps. However, the issue does not persist on any other browser I used.

All of a sudden Firefox started to use alt+number (e.g. alt+3) to switch to that tab (i.e. tab 3 in my example).

Why? How do I disable this? It prevents me from typing any of the special characters that are located on alt + any number key. E.g. I can type the at-sign, not the dollar, or any such character which requires the alt-modifier and a number.

I don't know if this ever worked in FF, since I've been on Chrome a while. I tried canvas.toBlob() in FF without a solution.

The behavior is the same whether the served image is jpg or webp. A Servlet delivers the image data, here in webp:

          response.setHeader("Content-Type", "image/webp");

On page, I use a canvas thus => see '// FIREFOX'

     var canvas = document.createElement( 'canvas' );
     canvas.width = width;
     canvas.height = avail_height;
     var context = canvas.getContext( '2d' );
     context.drawImage( imgsrc, 0, 0, width, avail_height);
     context.lineWidth = 150;

     // FIREFOX: canvas.toDataURL('image/jpeg')=black, png,webp,default=transparent
     img.src = canvas.toDataURL('image/jpeg');

     img.onmousedown = disableDragging; // for FF
     img.style.opacity = "1.0";
     console.log('setImg ok');

Inspecting a black jpeg:

        data:image/jpeg;base64,...

Thanks!

Since the last 1-2 months, the latest Firefox browser updates have had this negative effect, that each time when I open the browser in full window, it hides the WIndows 10 toolbar. Normally toolbar comes back visible when I move the cursor to the area, but not now. I need to either click Win+T or to minimize the browser window and then to make it bigger again (full size). That's not the normal solution. Normal shouldn't hide the toolbar at all. This doesn't happen with other softwares, and my toolbar settings in Win10 are like they should be.

If this is a known Firefox bug, is there any change that it could be fixed for the next update? Or can I do something by self to fix it?

Thanks!

I have tried an uninstall and reinstall but the same message comes up saying Firefoc is already running but can't be used and that I have to kill the old Firefox. I cannot access the cache since Firefox will not open. Reinstallation should have cleared the cache. Since I uninstalled Firefox the message appears when I try to reinstall Firefox. None of the troubleshooting methods re available. What suggestions do you have that will get me access to Firefox as my browser again?

Recently transferred from Chrome. My understanding was Firefox private browsing was supposed to work similarly to chrome incognito mode; once you close the browser, all local files are deleted and cookies are cleared.

However, with Firefox it maintains my logins. If I log into an account while private browsing and the close the browser, I’ll still be logged in next time I go to the website even if it’s days later (and I have never logged into this account in a non-private browsing window!)

I never had this issue using chrome incognito, so it seems to be a Firefox problem.

Is this just not something Firefox supports? Is there any way to prevent storage of cookies and private data?

Firefox 115.26.0esr will not allow me to download any files without producing an error message that I need to download the native client so that it can start JDownloader. I managed to download from the link the error message gave but when clicking on install.bat, it says it can't find the path and then press any key, which I do then it closes that and nothing happens.

I was not able to download and reinstall Firefox by using Firefox as I got the same message. I downloaded via Chrome and then tried to reinstall Firefox 115.26.0esr. It installed fine, but when I go to download a video file I'm back to the same error message that I need to install the native client.

How do I break this error message cycle and get downloads to work again? PS: I am using Windows 7

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!!

I run Firefox on a Dell Inspiron Laptop which runs Windows 11 Pro. Lately, when I cclick on a link in an email, I get Th following message: Application error: a client-side exception has occurred while loading weather.com (see the browser console for more information). I'm also getting messages that my browser is blocking cookies, which I don't understand, since none of my settings (so far as I cantell) block coookies. I'm also seeeing slow loading of pages.

I've refreshed Firefox and eliminated one or two extensions, but I don't understand why all of this is going on. I'm having to submit this over Chrome, because Firefox won't let me log in, due to the cookie problem,

How do I get all this mess straightened out?

Does Firefox produce pop-ups in this manner? When I scan my machine with Microsoft defender it comes up clean, but the pop-up start when I open Firefox. I have not clicked on any of the pop-ups. The pop-ups mimic a McAfee virus but I do not have McAfee installed.

I recently upgraded my MacBook Pro and now Firefox has pink background which is annoying me. I don't want black or cartoon characters. How can I install something more subdued?

How does one scan a QR code while using a PC? I thought I had set up Two-Step Auth a long time ago, then I realized I wasn't being asked for a code. After reading the instructions, I am very confused on How to SET UP the TWO-STEP authentication code.

Why do I need to use a 3rd party app to set up Two-Step?

Thanks for your help, Rhon