Firefox Support Forum

I have a website that has MP4 video in a HTML5 video player, with subtitles done in the WebVTT format (*.vtt). I just noticed that, when testing my pages locally on my C drive, the subtitles no longer appear on the movies. They do appear on the website (thankfully). Does this mean that lately Firefox has dropped support for local VTT files? Chrome has always ignored local VTTs, for some reason, which is why - until now - I used Firefox to test subtitles off the C drive. Note: If I link the local page to the VTT file on my website, subtitles still do not appear in Firefox. It could be something else, of course, so just need to know if VTTs are now unloadable locally in FF.

Last night I was watching a video series on Amazon and the last episode won't play on my MacBook Pro. I plays on the TV and in Safari. I deleted and reloaded Firefox but the issue remains.

FF 100 on Linux Mint 20 cannot access any websites. Tor can. TBird email can. I'm on an older Ubuntu with FF 94 writing this. How do I get back to previous FF? URGENT!!!

Hi I am using firefox in arch linux 5.17.9-zen1-1-zen kernel and after the new firefox update I can't right click in firefox. Whenever I right click the context menu shows up for 1 sec and then it automatically takes me to the previous page. Click on the image automatically prompts me to download it although I don't want to download the image. Is there anything I can do to fix the issue ?

I moved my old hard drive to a new ssd. Everything works but Firefox . I uninstalled and reinstalled when i try to use it I put in a search term hit enter and nothing happens. Also the drop down on right side nothing can be used

When I did the reinstall a error message came up about The code execution can not be found because VCRUNTIME 140-1 was not found reinstall Firefox again I did that did help

Thank you in advance

I could'nt play Netflix or Amazon videos on my Firefox browser, I have an old MacBook pro OS 10.9.5 (it's the last operating system I can use.. I have photoshop 6 and it won't work on any further OSs) I went to update Firefox, was not sure what version it was. and my computer asked" replace current version of Firefox with New" , I said yes, it did.. and then after I downloaded it, I noticed there was a circle with a slash going thru it on Firefox Icon, when I tried to open new firefox , it bascically said will not work with this OS. I could not go back and lost firefox alltogher, which also had my prefernces and autofill passwords etc. I went to Mozilla site to see if I could find an older version of firefox.. This is what I found : Firefox version 78 was the last supported Firefox version for Mac users of OS X 10.9 Mavericks, OS X 10.10 Yosemite and OS X 10.11 El Capitan. These users were moved to the Firefox Extended Support Release (ESR) channel by an application update.

I downloaded it and it said It will not work on my OS, So, How can I basically get the same firefox I had or whatever the last version that works on my computer..and best case senario save my prefernces and passwords, which maybe might have been saved somehow when I tried to change in the begining .. thanks so much for your help.

Hello everyone,

I need to disable all videos from ever playing no matter what for medical safety reasons, does Firefox allow this?

I've already found the option in the config to disable GIFs. Turning off autoplay is not enough.

Operating System Ubuntu 20.04.4LTS on AMD® Ryzen 3 pro 3200g 64bit processor. Firefox Web Browser version 100.0.2 (64-bit)

The method I can reproduce sound distortion:

I have clear sound playback through both system HDMI speakers or if earphones are plugged in, verified using the Ubuntu Sound Output test left/right (without distortion)

Then if I open a normal Firefox window and listen to YouTube video for example I have no distortion, if I however open I private window, say to access training material on Microchip University site I suddenly have distorted playback.

Please advise why private window opened suddenly distorts my output sound. Sound suspicious.

in startpage of my ms account all ms apps can be opened...........EXCEPT the app Onedrive. What to do to make this work?????

using MS Edge all is doing well!!

thanks in advance

Hi folks,

I've asked this same question of Microsoft, as I cannot tell if this is a quirk in Firefox 100.0.2, or in Windows 10 Home, or something to do with what they put in the water here (besides flouride)...

Over the last few days I've had to reinstall Office on this Windows 10 Home system, and had a Firefox update to 100.0.2 as well. Everything working fine up through last night -- URL shortcuts on the desktop would open Firefox (default browser) just fine.

Shut down. Cold boot this morning. Manually open Firefox as usual. Double-click on desktop URL shortcuts (or right-click, Open) gets a real quick hourglass and then nothing. No error, no browser tab.

So I checked: default browser still set to Firefox; .URL filetype still set to "Internet Browser."

I toggled the default browser to Edge, and the links work just fine. Same links. No changes to them.

Toggle it back to the much more privacy-protecting Firefox and... they won't work.

This seems spooky.

Note that the desktop icons for these shortcuts correctly show either the Firefox icon, or the logo/icon for the web page itself (ie, Google Maps). And the toggle of default browser did NOT update the icons.

Any ideas?

Thanks!

Dear Sir/Madam I have recently started purchased an Oculus Quest 2 VR headset. In order to purchase apps and games for my headset I want to use my PC so I can peruse the software available in the Oculus Quest store However when using the Firefox browser I find that when I link to the Oculus store I end up with a constantly rotating wheel and cannot access the apps/gamessection of the store (Now known as METAQUEST) However when I use the MICROSOFT EDGE browser the Oculus website works perfectly This disappointing as I much prefer to use FIREFOX Could you advise if there is a setting within Firefox which may help or could you comment on why Microsoft Edge works but Firefox does'nt Thank you Regards and best wishes Edward

How can I get rid of add-on HP Wolf Security Extension. It came with the "regular" HP updates (HP Sure Click included) and it has seriously messed up my PC yesterday, Virus attacks included. Windows 10. HP service not available weekends.

So far I have managed to uninstall HP Sure Click and HP Wolf Security (at least most of these pests) with all regular and special methods (was very difficult as the regular uninstall process did not remove these pests). I have uninstalled various Apps: Chrome, Zoom, Skype, Firefox. cleaned my PC, run windows troubleshooter and maintenance and of course Bitdefender various times. Restarted PC uncountable times and....reinstalled fresh ones and yet:

....Add on HP Wolf is there again in Firefox. It can not be removed with any of the regular methods (have tried them all, see forums and available manuals etc.) ....I have managed to get rid of it in Chrome. One little success story at least. ....HP Sure Click is silent now, even so I expect it to loom around somewhere in my PC. Some files could not be deleted (not even manually with power deinstallation)

I have not yet deinstalled HP Sure or the HP client Security Manager and I do not have the IT skills to work in Bios - directly in the boot sector.

I have not reset windows which I try to avoid - very very very.....last option.

HP Wolf Security and HP Sure Click are real pests. They hooked themselves onto my PC without my permission on Friday evening as part of the regular HP updates. When browsing on the internet I was flooded with ad pop ups and spam AND virus / trojan attacks. It even tried to shut down my virus programme Bitdefender, which I managed to stop and it fortunately worked very well and could contain more damage.

I will call HP tomorrow in their office hours and give them a hard time.

I would greatly appreciate your help and your ideas. Hopefully one of you had the same experience and managed to get rid of this pest.

Thanks in advance for your help and ideas and please dont install these pests!!!

I just upgraded from a Windows 10 PC to a new Windows 11 PC. Under W10, the Home icon appeared in the top left of the screen, to the right of the Reload icon. But as you can see, it has disappeared. How can I get it back? I have clicked around all the options I can find, but nothing...

When I click on a link to a PDF in a website, expecting it to open, it does not open. Instead, I am asked to save it to a file on my computer (apparently more or less selected at random). To open it and read it I have to navigate to that file. Not a terrible problem, but bothersome. I imagine I must have inadvertently told Firefox to behave this way.

When i am loading my proxy into the multi container app i get a message that reads "please enter valid url link" do i need to enter an actual link or just the proxy numbers and port? I reached out to my proxy provider and they do not provide an actual link to the proxies.