Firefox Support Forum

Entire screen taken over by what I think is a Bogus security alert. Claims to be Apple Platform Security - *** ACCESS TO THIS PC HAS BEEN BLOCKED*** ... it has been infected with a Trojan Spyware This is followed by phone numbers to "contact Mac Support - 1-833-798-2936— (plus another number)" I have contacted Apple and APPLE SAYS: they would never send such a notice. IMPORTANT: This only occurs on FIREFOX. It won't go away when I shut down or even if I erase and reload Firefox app. NOTE: It does NOT happen with Safari.

I recently did a fresh install of Firefox, and now picture-in-picture videos are defaulting always to the top-left corner of the screen and to not stay always on top; each time I open a video or refresh the page and re-start picture-in-picture it reverts to these defaults and I have to manually change it each time. Previously the default had been always on top and would show up in the location & at the size of my previous usage. I would like to adjust the default settings to make that happen again, but I can't find where to do that. I'd appreciate information on how to do this. Thank you!

Hello

I want to open pdfs from firefox (snap 101.0.1) with the default application of the system (Xubuntu 22.04) and not open them in a new tab within forefox.

But it does not work, as if there was a problem with the system handler but only for pdfs and not for other file formats.

More details :

• I changed Preferences/general/Applications for pdfs to use either "always ask" (and then chose "open" " With system handler" when asked) or "default system application". In both cases the pdf is downloaded but not opened. If I right click on the downloaded pdf in the list of downloaded files and then chose "open with system handler", nothing happens.
• Opening the pdf inside Firefox works well and opening pdfs saved on my disk (outside firefox) as well.
• Opening other file format by choosing to open them from firefox with the system handler works well too (tested eg with .torrent, .xls, .tif,...).
• I tried to change the default system application for pdf (Atril) to other softwares without success (Okular, Evince).
• If I try to open a .djvu file with the "system handler" it is opened correctly using Atril which is the also default for pdfs... So Atril works for .djvu files but not for pdfs...
• I tried to replace the handlers.json file from my profile by a handler.json file from a brand new profile, without success (I still have a backup of my old profile file if needed). I did that because opening with the system application worked before and the bug appeared after I changed all applications preferences to "always ask" (and there were a lot of them in my rather old handlers.json file).

I'm lost...

Despite clearing my cookies and cache, going through every step on [this web page|https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems#w_check-browser-internals], and trying multiple different Netflix profiles, I cannot seem to get Netflix to load any content on Firefox. This problem seems to have cropped up over the last few days; I last used Netflix on June 11th and had no problems, but tried last night and again this morning to watch anything only to find that it would invariably show me a red loading wheel before presenting me with error code F7111-1105 after several minutes. This seems to be an issue with Firefox on my PC, as I have tried using the Netflix mobile app and (reluctantly) installing Chrome on my PC to test things out -- both had no problems -- yet I'm stumped! Again, I have gone through every option presented by the troubleshooting page; I have refreshed and reinstalled Firefox, made a new Firefox profile and tried it out with no extensions, scanned my PC thoroughly (with no issues presented), and nothing seems to budge.

Dear Colleagues,

I hope this message finds you well. We are facing an issue with one of our public site. This site working perfectly fine on all other browsers except firefox. The website loads perfectly but when we click on login or signup Following error we are getting when we try to login .Uncaught Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 403 We have checked all the code and settings from our side but found nothing . 'FYI this site was perfectly fine before version 85 but now we are facing issues with later versions'

Here is the link to our site https://online-antragsmodul.de/OAM/Login.aspx?RetURL=/OAM/default.aspx Your kind support will highly appreciated.

Best Regards, IOM Germany

I can have a youtube video on two tabs, but I cant play both of them. I want to do this because I want to play "1 hour of silence occasionally broken up by AUUGHHH" to jumpscare myself randomly while watching another youtube video because I am a masochist. Whenever I play a video on one tab and go to the other and play that one, the other one pauses. Please help me satisfy my masochistic desires. Thanks in advance :)

Every time i close and open my computer again, i get on firefox and all my accounts online have been disconnected. My email, youtube, google, tumblr, twitch, everything! I constantly have to log in again and its incredibly annoying! What do i do?

How do I remove old autosave phone number permanently? I can remove it at the form by clicking on it but this only removes it this one time. I have to fill out forms regularly. Firefox auto fills my old phone every time even if I have already entered the correct one. I just need to remove the old phone number from my Firefox completely and permanently so I can replace it with the current one.

In trying to find ways to remove elements, it seems like I need to go the CSS route. I was wondering if anyone could recommend a good tutorial or good videos or something so I can learn how to do it. It looks complicated to me, so any help would be appreciated. Thanks!

Login to an account works fine on Chrome but does not work on Firefox Win 10. When using Firefox the target login page is displayed but I have to either type in User ID and Password or copy and paste from a password library - the password library loads the values but the site won't accept them as valid. Once I have managed to get the User ID and Password accepted the target site will not accept them so I get a message to that effect - either 404 or session has expired, etc. Using Chrome typing the entries or copy and pasting the URL for the password manager displays the passwords and logs me in. All I can think of is that there is some encryption or license problem with the Firefox login process.

Firefox 101.0.1 (64-bit) on Windows 7

The second tab does not close when I click the X.

The first, third, and subsequent tabs do close by clicking the X.

I can close the second tab either by right-clicking it and selecting "Close tab" or by right-clicking the first tab and selecting "Close multiple tabs > Close tabs to the right"

It's annoying, but not a deal breaker.

I want to import my bookmarks (.html file), but all of the help I find online references Firefox's "library," and I can't find a library. Info on how to get to the library doesn't match what I see in Firefox.

tia las

For some unknown reason, I am no longer able to download anything in Firefox. The download manager just says "Failed". I tried using another browser and I am able to download okay. Any help with this would be greatly appreciated. Thank you.