Firefox Community Forum

"Please create a new version of the browser app that supports the ability to use FileSystemAPI on directories, this is essential for working with a BeatBuddy project and SD cards that are saved on my computer using the online editor."

I am getting the following error message when using Firefox. The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem. I cannot see my bookmarks or add new ones. I followed the directions in articles about this problem and they did not. help. I decided to uninstall Firefox and l re-installed it from scratch and i still get the same error message.

It seems to me that recovery from backup only allows one to recover ALL bookmarks. But maybe one wants to recover only one folder, or only a few folders. Can that be done? If so, how?

Hi, The site https://fortunenette.fr/ does not display properly in Firefox on my MacBook Pro running macOS 15.7.3 (build 24G419).

The header and navigation load fine, but the biography articles and the richest people table stay blank or show only placeholders. In the Firefox Console I see these errors: Uncaught TypeError reading 'length' of undefined, mixed content blocks for HTTP resources on an HTTPS page, and several CSP violations for inline scripts.

I already cleared cache and cookies, disabled all extensions, tried Private Browsing, turned off Enhanced Tracking Protection, and changed some about:config settings like strict transport security. Nothing helped.

The site loads perfectly in Safari and Chrome on the same Mac. It happens in Firefox 147.0 and the 148.0b2 beta too.

It seems like a Gecko-specific JavaScript or rendering problem. Has anyone else run into this? Any workaround without switching browsers?

Hi, I’ve been experiencing slow startup times in Firefox, especially when I have my Time calculator web app open. The browser takes longer to load and sometimes becomes unresponsive.

I’ve tried disabling extensions and changing my home page, but the issue persists. Are there any specific settings or troubleshooting steps in Firefox that can help improve performance when using online calculators like this?

Any guidance or tips would be greatly appreciated. Thanks!

My bookmarks disappeared and I do not know why.

I have tried to restore bookmarks following the directives obtained online. Somehow this has not been successful, and this remains a giant puzzle to me.

I can see the bookmarks in Library, but I have not been successful in figuring how to transfer that listing to the Bookmarks tab at the left-sided top of the frame of the browser.

Thank you.

Marvin Makinen [email removed]

I’m running into a limitation with Firefox profiles involving the original Profile Manager (about:profiles) and the new Profiles menu in the toolbar.

I previously created multiple profiles using the original Profile Manager (about:profiles), for example profiles A, B, and C. These profiles still function normally and can be launched through about:profiles, but they do not appear in the new Profiles menu in the toolbar.

I also tried using the “Copy this profile” option available from the new Profiles menu. This made it clear that the feature does not work with profiles created via about:profiles. For example, when I open profile A, I expected that I could use “Copy this profile” to copy profile A into an existing profile like profile B (which was also created using about:profiles). However, this is not possible. Profiles A, B, and C remain isolated from the new Profiles menu and cannot be accessed, copied, or managed through it.

At the moment, profiles created with the original Profile Manager (about:profiles) can only be accessed through that manager and cannot be transferred into the new Profiles menu in the toolbar.

Is there an official fix or a workaround that achieves the same result—specifically, transferring or integrating all existing profiles created with the original Profile Manager (about:profiles) into the new Profiles menu accessible from the Firefox toolbar?

when I click the mic it says enable microphone permissions but where I find that in firefox settings it needs to ask for permission I can't just enable it. So how do I get the mic to work for more chatbot?

Every time I try to use my camera or microphone on some websites from on firefox it says can't detect camera or microphone? It doesn't show up with the 'allow this website to access your camera/ microphone' pop up it does with other websites. I went into permissions and manually changed it myself and it said it still couldn't detect the camera/ microphone

Dear Firefox

Every few days the sidebar reappears.

I DO NOT WANT to use the AI chatbot.

Having tabs from other devices is all that useful to me. It feels like something that's just there to justify the AI chatbot bar existing.

I can access bookmarks and history from the toolbar. Don't need a new sidebar for that. They don't justify your stupid AI chatbot bar.

I DO NOT WANT TO USE YOUR AI CHATBOT. YOUR SIDEBAR IS LITERRALY NO DIFFERENT FROM A POP UP ADVERT. SO STOP HAVING IT POP UP AGAIN AND AGAIN.

Hi. I'd like to know that there is a way to stop download torrent files and just let my torrent client /qbittorrent/ handle it. Even after i set it to open them with qbittorrent Firefox still downloads those files. I mean can delete them manually, but it is quite annoying.

firefox doesnt start and gives me this error If i uninstall the have a fresh, install, everything will work normally until i restart my pc

AvailablePageFile: 13664788480 AvailablePhysicalMemory: 20233519104 AvailableVirtualMemory: 138533665595392 BackgroundTaskMode: 0 BuildID: 20260116091309 CPUMicrocodeVersion: 0xa50000d CrashTime: 1769253421 HeadlessMode: 0 InstallTime: 1768730212 LastStartupWasCrash: 1 ModuleSignatureInfo: {"Mozilla Corporation":["firefox.exe","xul.dll","gkcodecs.dll","nss3.dll","mozglue.dll","lgpllibs.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll"],"Microsoft Windows":["wsock32.dll","DWrite.dll","textinputframework.dll","dbgcore.dll","dbghelp.dll","version.dll","CoreUIComponents.dll","CoreMessaging.dll","ktmw32.dll","WinTypes.dll","propsys.dll","uxtheme.dll","dwmapi.dll","kernel.appcore.dll","windows.storage.dll","ntmarta.dll","CRYPTBASE.dll","wldp.dll","ntasn1.dll","ncrypt.dll","msasn1.dll","profapi.dll","KERNELBASE.dll","ucrtbase.dll","bcryptPrimitives.dll","gdi32full.dll","win32u.dll","bcrypt.dll","msvcp_win.dll","wintrust.dll","cfgmgr32.dll","crypt32.dll","user32.dll","oleaut32.dll","shlwapi.dll","advapi32.dll","msvcrt.dll","imm32.dll","ole32.dll","rpcrt4.dll","shell32.dll","kernel32.dll","SHCore.dll","ws2_32.dll","gdi32.dll","sechost.dll","psapi.dll","combase.dll","msctf.dll","ntdll.dll"]} ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 899 StartupCacheValid: 0 StartupCrash: 1 StartupTime: 1769253421 SubmittedFrom: Client SystemMemoryUsePercentage: 40 Throttleable: 1 TotalPageFile: 37688152064 TotalPhysicalMemory: 34198491136 TotalVirtualMemory: 140737488224256 UptimeTS: .1135774 Vendor: Mozilla Version: 147.0.1 Ce rapport contient également des informations techniques sur l’état de l’application lors du plantage.