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I've been having problems with some websites not displaying content, others displaying error messages. So have been going through the Troubleshooting Mode and diagnostic process.

The cause is the MS CoPilot extension for Firefox.

Useful in other ways as I discovered several other extensions I don't need, hence have remained disabled.

I have a problem where if I install the packages needed to get hardware video decoding working in firefox it completely breaks YouTube playback. I can't find any info on the internet about the problem and I am having a lot of trouble with it. YouTube playback with libva-mesa-driver and libva-vdpau-driver will start stop restart start playing audio then crash with a this error every single time. I am at my wits end trying to figure out this problem and I would love help figuring out the problem I am using firefox-developer-edition as a note thanks Ozzy

I am unable to reach Facebook on both Firefox and Waterfox.

Other browsers (Opera, Edge, Chrome) are able to access Facebook.

I can access other Meta-owned sites (Messenger.com, Instagram, Threads) on Firefox and Waterfox.

This issue exists on both my desktop (Windows 10) and laptop (Windows 11).

This issue does not apply to Firefox for iOS or the Facebook app.

All apps and OS's mentioned are up to date.

This has been going on for over a week now.

I am sure someone has asked the question before but couldn't find the answer. Why dark mode has to be different than other dark modes on other apps. Colours really does not match nicely with my phone. I used Samsung Fold and its really unpleasant.

When I went to start firefox today on my MS Windows computer, I got a file error message saying pathway was corrupted (or something like that) and then the firefox app disappeared from my pinned toolbar. When I went and reinstalled it, all of my saved bookmarks and passwords were gone. How do I get them back?

Using Samsung S22 Ultra. Had probably 100+ tabs open, and as I was browsing a site, suddenly Firefox crashed, and on re-opening the app, all the tabs are gone, some dating back to months ago.

Unfortunately I wasn't aware of the tab saving add-ons until after the fact, but still, the fact that there's no "restore previous session" on mobile is extremely irritating, and history only goes so far. Why is this a thing? I can't believe this

Starting yesterday firefox, no recent updates etc, gives a 403 error for several large corporate sites and 404 page not found for most paypal payment pages. These sites/pages work fine with Chrome. There were no changes by by myself to my firefox installation, not any antivirus changes.

Within the last hour today everything is working properly. What is going on? jn

Hi, I'm having issues with my Google search results page. It used to be very clean looking and mainly only showing the results of whatever I searched. Today though, I searched something and now the Google results are first showing Reddit answers, what others have asked, discussions and forums, what others have searched, short videos, etc. I have to scroll really far down just to get some normal search results. How can I fix this? Call me old school but I want the classic version back. Please help, I don't want to switch browsers. I've been using Firefox nearly since it's launch, since StumbleUpon days. Yeah!!! If you know, you know. Thanks!

I reset a computer, deleting all my files. I want to use, as I do elsewhere, Firefox as my browser. And though I signed into Firefox using my old credentials, none of my bookmarks are there. How do I complete this setup?

Hello Why getting a black mask and purple screen. I did not set private and security is in lower case and cant access. I want the normal screen with history that I can delete myself. Not sure if this is new or update caused this to change.thxs joseph

Hello Why getting a black mask and purple screen. I did not set private and security is in lower case and cant access. I want the normal screen with history that I can delete myself. Not sure if this is new or update caused this to change.thxs joseph

I am migrating to a new phone. WhatsApp offered firefox as an option for storing its passkey. That took me to the connection and synchronisation process which the new phone said had failed. However all my tabs and other passwords appear to be syncing. Now selecting firefox to store the WhatsApp passkey takes me back to the failure page every time. Any idea how to restart the passkey addition to firefox process? WhatsApp won't work whilst I'm hung up in limbo between the two apps.

Windows 11 Pro, Version 10.0.22631 Build 22631 Firefox, 126.0b8 (64-Bit)

Hey,

I use a personal firewall. Every unknown program that attempts to access the network triggers a popup message requesting permission.

Right after the installation, Firefox.exe initiated a message, stating the following path: "C:\Program Files\Mozilla Firefox\firefox.exe". I granted access.

However, weeks after the installation, the updater.exe asked for permission, stating a very unusual path of itself. The path is "\device\harddiskvolume3\Program Files (x86)\Mozilla Maintenance Service\update\updater.exe".

This seems unusual to me, since apps normally use 'C:\' to refer to harddiskdrive0. It is also suspect, since there are only two drives connected and the Disk Management tool (as an admin) indicates, that there are harddiskdrive0 and harddiskdrive1. There are no hard disk drives 2 or 3.

I also wondering about the fact, that the about firefox screen states, that firefox is up to date - even I did not granted access for the updater.exe in the past. There has never been a firwall rule to grant access for the updater.exe - how did it update in the past?

Does anybody have an idea what is happening?

Best regards, André

Why is Firefox autofilling the address bar with URLS I've never visited? There is a question on this from 5 years ago, with lots of suggestions. My problem is that Firefox is autofilling with sites that contain confidential login information.

Whenever I type in a website URL in the search-bar, first of all, the drop-down menu of related searches and websites does not show up. When I press enter to confirm that's where I want to go, nothing happens. The URL just kinda sits there, no loading circle or anything... Just a blank page. Only two of the icons on my toolbar works. The "Account" icon, which takes me to my Firefox settings. And my Extensions icon. Clicking the three little lines does nothing. The only websites i have been able to get to work at all are the settings page, and the Firefox troubleshooting page. I'm using Version 125.0.3, I tried using the browser both with and without hardware acceleration with results being unremarkably the same. I restarted Firefox and my computer multiple times to no avail, and the only thing I could find out of the ordinary was an error with Importing data from Microsoft Edge, which was not something I consciously wanted to do, but there was an error that popped up regarding that when i went to the settings page.

All that being said, I'm confused and at a loss for options, and could really use a Mozilla Staff member or someone who knows what they're doing to work me through this.