Firefox Community Forum

Hello,

I’m experiencing an issue where I cannot use ChatGPT-5 in Firefox. When I log in and try to select or use GPT-5, nothing loads or functions properly. Other models like GPT-3.5 work normally, but GPT-5 does not respond.

I’ve already tried refreshing the page, clearing cache and cookies, and even disabling extensions — but the problem persists. Could this be a compatibility issue with Firefox? Any advice or support would be appreciated.

Thank you in advance for your help!

One of if not my most favorite addon "context search" has recently been flagged as violating mozillas tos. I'm talking about this one: https://addons.mozilla.org/de/firefox/addon/contextsearch

I am unable to find further explanation or the exact reason for this decision, but I am able to activate it again at my own risk. Seeing as I don't know what the problem is, I am hesitant to do so. Could someone explain what the issue is and if it's safe to continue using that addon? Am I or is my personal information at risk, since I have been using the addon regularly?

I have Firefox installed on a Windows 11 desktop. The profile is missing, yet Firefox is working fine, and I see all of my bookmarks, etc.

I have windows set to show hidden files.

When I try to run %APPDATA%\Mozilla\Firefox\Profiles\ it tells me that the location is unavailable.

I cannot find the profile anywhere in file explorer, despite multiple tries to search for it.

If I go to Help > Troubleshooting Information, I see a "Location is not available" message, shown in the attached image.

I could uninstall and reinstall Firefox, but I'd prefer to solve this because the exact same thing is happening to my Thunderbird profile. It doesn't exist anywhere, yet I can see all of my emails and it appears to be working properly. I only found this problem because I wanted to backup my emails but was unable to.

Both of these profiles must exist somewhere, but I've tried everything to find them. Please help me fix this in Firefox, and then if I have a fix here I'll try to apply it to Thunderbird, where I have a lot of emails I'd hate to lose.

I cannot get certain videos to play on Firefox. YouTube, Instagram, Tumblr all can play videos. Pretty much everything else doesn't work. Patreon, I get a black screen. On Twitch, I can only see the 'not currently streaming' screen, even if they're currently live, and VODs don't work. My computer specs are below. Operating system is Windows 10, I use Windows Defender for anti-virus. Everything works completely fine in other browsers. Here's everything I've tried to fix this:

• Updating Firefox
• Updating my computer
• Running in Incognito
• Running in troubleshooting mode
• Allowing autoplay
• Disabling hardware acceleration
• Disabling addons
• Clearing cache and data
• Enabling/disabling DRM content
• Installing Windows Media Pack

My specs: Processor Intel(R) Core(TM) i7-10700F CPU @ 2.90GHz 2.90 GHz Installed RAM 32.0 GB (31.8 GB usable) Storage 932 GB HDD TOSHIBA DT01ACA100, 477 GB SSD Micron 2300 NVMe 512GB Graphics Card NVIDIA GeForce RTX 3060 Ti (8 GB) Device ID C6C4BD2F-BD36-40B6-A917-13896770194D Product ID 00325-82058-09721-AAOEM System Type 64-bit operating system, x64-based processor

This has been going on for over a year now. I've gone through all of the above troubleshooting steps multiple times. The only progress I've made is getting YouTube from nonfunctional to working again.

I am being blocked by newyorktimes.com. I have tried access after disabling all my extensions and preventing tracking for this site. It makes no difference. This just started happening. It is not a problem with my accoun\t as I can acces the site with Microsoft Edge.

I am trying to preserve my POCKET data before it all goes away. Mozilla responded to my email requesting data but when I opened the link I got this message that "the provided token has expired : despite it being less than 24 hours. Plus a lot of other characters meaningless to me. What can I do now?

This XML file does not appear to have any style information associated with it. The document tree is shown below. <Error> ExpiredToken <Message>The provided token has expired.</Message> <Token-0>

Firefox has started redirecting to advertising pages after clicking on a link. Only on 1 site. The site loads but not quite correctly. Normally has information about movie ratings show up when you hover over pictures. Have to double click (double load) to get where you want. Does not do it with Edge. Used to work fine, just started.

My new Win 11 PC out the box with a Firefox installed on it, worked fine for 2 weeks then an update from you guys causes it to crash, it is stuck in a perpertual reboot loop as windows crash, close then the app restarts despite being told to close, only a reboot will stop it from trying to open and then cause memory leaks.

Also, when are you guys going to incorporate a "Roll back feature" for these situations, so that the older working version can be retrieved.

All my important logins are on firefox and your programmers, whatever they did have jeopardised my ability to access important accounts.

I best check my androind tablet hasn't updates or I will be up the wazoo without a failsafe... Well played Mozilla Devs...

I power cycled my computer in order to install some Windows updates, and when I opened up Firefox again, I had precisely zero bookmarks.

I found this folder, which is supposed to contain my automatic backups: https://i.postimg.cc/bwrWBswd/A.png

But I can't figure out how to use those files to restore my bookmarks.

When I click on Manage Bookmarks > Import and Backup > Restore > Choose File, nothing happens. No other option seems viable.

I had an ASSLOAD of bookmarks on this browser, so I need to recover them because there's just no way I'll be able to remember them all manually and add them all back one at a time!

What do I do?

Today, as a change, when I open a webpage from the bookmarks toolbar, the new page does not include the toolbar - to get to the toolbar, I have to open a new tab or restart - is there a way to fix this in Settings?

Any Ideas what is going on? About July 21st, 2025 I started noticing with a couple of browser tabs open, a new tab opens autonomously and flitters in the new tab name area, what "looks like a TagID", then closes by itself. I define "looks like a TagID" as something that looks like a tag at end of article link in popular newsletters I see, and appears in the url bar of the linked article.

The occurrence of the new tab happens when I open the browser, within 1 minute and occurs randomly during the session, perhaps every 20 minutes.

My first suspect/assumption is I am always signed into Mozilla when I open Firefox 141.0 (64 bit), processing an update now, Aug 5 2025. I have subscriptions to VPN and Monitor and I have sync (passwords and bookmarks) with my mobile instance of Android Samsung Galaxy phone.

My Desktop is set up as Windows 11 pro with one employer InTune acount for Microsoft but I limit that work to Edge browser.

I'm using add-on (MarkA link) to annotate links. It works pretty fine, except that "from time to time" all marks dissappeares (without any clear message or anything). The data is kept in `storage-sync-v2.sqlite` database in a form of chunks (each chunk has length of 1084 bytes) as single "big" JSON. Application data is a JSON as well (here an object where link is a key with additional data for the link). All characters in "internal" JSON, which are not allowed as "external" (the one with "na" objects) are escaped with '\'. I observed, that storage_sync_data::data might be incorrectly split, what causes the escape character escapes "external" JSON (I mean it joins two `na` chunks , which after that cannot be parsed (and whole data is removed), e.g.: ``` {\"grp\":\"bibl\",\"type\":\"Mark\","na_9":"",\"mark\":\"\"}, ``` where "external" JSON is broken on `Mark` (as " from "internal" document is split into two entries, and closing " is escaped with a '\' from a `Mark` tag.

Things goes even worse, if the properties allow to contain some "special" characters escaped with '\' (e.g. new line, quotation mark, backslash, etc).

I'm unable to login to account.apple.com on my laptop which is running Ubuntu 24.04.3 LTS.

I've launched Firefox using the `-p` option, created a new profile and then navigated to https://account.apple.com/sign-in and tried to login. I've attached a screenshot of the error message.

I had tried multiple things on my default profile, even troubleshoot mode, but I couldn't get it. I even tried useragent switcher to no avail.

I can login to the site using Chromium.

What else can I try?

I had firefox for 5 years it worked great then I upgraded one day about a month ago and NOW I have had to Force Quit firefox 20 out of the last 30 days. engineers ??????????????????

I was prompted to install a .js file while on a website unrelated to mozilla organization. I was taking a work call and distracted at the time and was dumb enough to install it before I realized this was not a normal update. Should I uninstall and reinstall firefox? My McAfee blocked the script from "trying to hijack one of [my] apps"

Whenever I use Google Meet in the Firefox browser, it works well at first people can hear me. However, for a few seconds, my microphone suddenly cuts out, and I have to raise my voice for it to work again. My microphone remains enabled and does not disconnect when the audio cuts out, but people are still unable to hear me. I have already set my microphone to 'Always Allow' instead of 'Allow Temporarily, but the problem persists.Can anyone help me with this