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I've had an ongoing issue with Firefox now for several months since upgrading to windows 11. When I try to copy text, or images, url's or anything really that is supposed to go to the clipboard, it copies a blank text with no data instead. I can copy text and images from other programs and even paste them into text fields on Firefox but I can't copy from Firefox to anything else and it's frustrating.

I recently got forced into upgrading Outlook in windows and hated it so I started using Thunderbird and surprisingly, I have the exact same issue there as well.

I have tried: Running Firefox in safe mode (Shift + Left Click) Resetting Firefox Switching Back to default themes Disabling hardware acceleration Updating to the latest Beta Build (v126) Running Firefox Developer edition

I really want to get this fixed and working, I don't want to have to switch to another browser =/.

Idk how to fix that problep bc its really bugging me out and i am going crazy

Here are the steps that i do to recreate the error

1. open a new tab
2. search up any website
3. on the same tab search up a diffrent website or click on a link on any link that redirects you on that website
4. literally after like 3 seconds firefox redirects you to the site that you were on before

Please how do i fix this cuz I hate it so much plskdjdiehzuzgzuahzjzvzkuzjzvz

Hi, I hope you are doing well.

I have been having issues since this morning. I am unable to open a new tab in the Firefox developer edition.

I have attached screenshots. I have tried to reset settings; I have tried to uninstall and then install again, but nothing works.

Hi!

I am having a problem with Firefox where: - if I am searching in the address bar in one tab (tab A), - but then before that finishes loading, I switch to a different tab (tab B), - Firefox will switch me back to tab A once tab A finishes loading. It's not immediate and is a little aggravating as it pushes me out of what I was already doing.

I'm currently on Firefox Beta (145.0) on Windows 11. I've tried the "When you open a link, image or media in a new tab, switch to it immediately" setting.

Hi, I am using Firefox Developer Edition though I have had this problem with Firefox in the past. The problem is that sometimes the audio from Firefox just stops working, everything else in Windows works but not firefox, I tried having the same youtube video on Firefox and Chrome annd it worked on Chrome. There are times that a Windows restart fixes it and there are times that I just have to wait a couple of days till it fixes itself. The only thing I could find to trigger this behavior is to have mi Bluetooth earphones connected, then disconnect them and sometimes when reconnecting them the audio is just gone. This usually happens when I am working, when I start the day I put them on and start some music on Youtube, after 3-4 hours I do a 15 minutes break and during that time I charge the earphones, when I come back and turn them on again, most of the times the audio is gone. Is this a known issue or something? I can send anything if you want. Thank you

Hi there! I keep having this issue where firefox keeps toggling security.enterprise_roots.enabled to false whenever i close it. Tried adding the security.certerrors.mitm.auto_enable_enterprise_roots Preference and set it to true, but still didn't qork and if i close the browser it's a given i have to go back to about:config to set the preference or i will start to see the typical errors again. The certificate is from adguard and it has worked for quite some time, i cannot explain this sudden behaviour and it seems to be an old bug that i thought was resolved by now. Should i post this in bugzilla?

Guten Tag,

Im Firefox Developer habe ich seit ca. einer Woche das Problem, das die Lesezeichen nicht mhr funktionieren. Kann weder etwas anzeigen lassen, hinzufügen noch importieren.

Das zweite Problem habe ich heute 07.11.2025 festgestellt, habe einen neuen Tap geöffnet und es werde auf einmal die gespeicherten Webseiten nicht mehr angezeigt.

Was kann ich tun? Developer habe ich gelöscht und wider installiert, auch resettet, doch es geht nicht. Auf der zweiten Firefox Brwoser habe ich zwar die Lesezeichen, doch kann keine Webseite mehr hinzufügen. Auch bei öffnen eines neuen Taps, sind die gespeicherten Webseiten verschwunden.

Dear,

I have been using Firefox Developer Edition for many years without any problem. I sync Firefox on my different PCs, so they are basically all the same in setup. Unfortunately, Firefox now crashes constantly on my main PC. I have therefore temporarily switched to the default FF variant.

Of course I have tried all the steps shown here on the forum but without any result that I can see. Both in safe mode with or without addons. No matter FF crashed.

The error ID: Crash ID: bp-20d91ca4-1f79-4211-a3d5-4fd7c0240507

I hope someone can help me on my way ,

Regards,

Reinder

error text - " Firefox cannot verify application "

when I enter email and password on cocofax.net login, scrwen just sits

"Your browser is managed by your organization" suddenly appeared OS:Win11 Certificates: "ImportEnterpriseRoots" I've tried: Reinstalling Firefox Installing Firefox Developer Edition (it disapeared for few days but it was back) Deleting the registry key for it (after restart it appeared again)

 I have Avast and Malwarebytes but this has never happened to me before with this anti - virus

No crash report, no trace, no anything. I click "Save [insert] as...", and Firefox hangs and stops responding. Windows automatically shuts it off when clicking. Launching Firefox again sometimes says there was a problem reloading the session, but that's not guaranteed.

Hello, as of recently Firefox got the new tool to highlight text in the native PDF viewer, and I really enjoyed using it. As of today, I had not updated or changed versions, but I suddenly lost access to the highlight tool option. Refreshing the page didn't work, downloading a new PDF and opening it didn't work, restarting Firefox didn't work, and I haven't seen anybody else have this issue.

Firefox Version> Firefox Developer Edition 125.0 Beta 8 (20240403091602) OS> Windows 11

I don't know if this is just an issue due to it being in beta, or it being on beta 7 but not 8, but either way any solution is appreciated!

For months now I can't cut and paste if I use Firefox. I am not remotely interested is uninstalling a heap of adds in a vain attempt to fix the issue. I can use Google chrome and Wonderfox which don't suffer this issue. I fail to understand why Firefox is alone in this problem. I would switch to Wonderfox as a default but it only works on SSL sites. Please stop ignoring this issue and fix it. Running Windows 11 fully updated on an AMD cpu.

I am on Windows 10 Pro (extended to Oct 2026) and use the Firefox profile manager at startup since I have more than one profile. Today (11/12/2025) I attempted to start Firefox and the profile manager window would not populate. the window was blindingly white on my dark background. I closed and restarted umpteen times but it refused relentlessly. I was about to uninstall firefox and then decided to see if I had actually installed it on any of my mobile devices. And indeed I had it on my ancient Apple iPhone 7+. And it was synced! I refreshed the sync and indeed it picked up my most recent activity from last night. All tabs were synced. To make sure I had another synced copy I also installed it on my iPad. I synchronized this too and suddenly my desktop browser started working again.

I don't know what caused the lockup of the Profile Manager but I am afraid it might happen again. What causes this and what can I do to regain control without having to reinstall? I am a researcher and I have over 1000 tabs open.

if i search something on firefox the search bar doesnt show english and after clicking enter for the answer sometimes it doesnt come in english. i have chosen english as the only language but sometimes i get results in bangla too. i want my results to be in english only.

When photos, videos, or websites are linked on a FB comment, it used to display a thumbnail preview below the comment. Now it just shows the link. On mobile, the preview appears. So I'm thinking a setting got changed on the desktop version.

Does anyone know what the issue is and how to correct?