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Firefox uses too much memory, sometimes 20GB on a 32GB Windows machine. It's usually one or two threads which are hogging incredible amounts of memory. This time I had about 30 tabs open.

Today I tried Firefox about:memory "Minimize Memory Usage" several times, and it was largely ineffective.

I did a "create memory dump file" of one 5+GB bloated thread using task manager, but can't find a way to upload the compressed archive with this report for analysis. Finding a way to report this issue was quite a challenge. It seems most help avenues are now missing/moved, and other reports of this type of issue are "Archived".

I tried killing the 2 bloated Firefox threads and checked for tabs which might be missing or malfunctioning. Everything continued to run normally while more than 10GB of memory was returned to system use. Leaving these bloated threads overnight doesn't improve anything, in fact I can often get up and find my machine is completely out of memory because Firefox consumed it all. My smallest machines have 16GB RAM.

These memory issues aren't new. I've been reporting them off and on for more than a decade. They get better for a few months after reporting, then they get bad again in a few more months. The battle to get memory leaks fixed is continuous while Firefox springs more leaks.

I'd like to give you the memory image I generated so you'll at least have some real data to look at and analyze for this report.

The attached task manager snapshot image is a very minor example of this issue. The numbers keep increasing like there are one or more large memory leaks.

What am I supposed to do about this new problem?

"XUL Runner This profile was last used with a newer version of this application. Please create a new profile." I did create a new profile. I have like 4 different profiles now from every time I've had to reinstall Firefox because it keeps crashing and freezing.

Hello Firefox Community,

I hope this message finds you well. I am reaching out regarding my website (Mazterizes), and I am keen to ensure its optimal performance and compatibility with the Firefox browser.

I have noticed "https not valid" when accessing my website through Firefox, and I would appreciate any insights or suggestions on how to address this issue. Additionally, I would like to ensure that my website adheres to best practices for compatibility with Firefox.

If anyone has experience or expertise in troubleshooting compatibility issues or has insights into Firefox-specific optimizations, I would greatly appreciate your input.

Thank you in advance for your time and assistance.

The new selection "Copy without site tracking" may eliminate certain codes, but does not remove all invasive data (my term). Consider this common URL occurrence:

link text

The new filter does absolutely nothing to this and when I pass this kind of URL on to others, I do not want to include all that crapola. Currently I have to manually edit the link, which can really get tiresome when passing on a lot of links.

Is there a way to modify anything in Firefox to accommodate this?

Firefox V102.0.1 up to date. Right click to open link in new tab - new tab is displayed, link is shown in new address bar, nothing is displayed in the window. Thoughts?

I've uninstalled and reinstalled Firefox multiple times, I've refreshed it, but tabs keep automatically crashing. Like, every new tab crashes immediately, the search bar is empty too.

I've tried troubleshoot mode and the tabs still crash. No extensions are running.

I can't sign into my account because that tab also crashes. The only thing that really works is opening settings.

There are no crash reports because FF is running but unresponsive due to tab issues.

Really annoyed because this happened randomly.

Later version refuses to connect to my modem, and goes into security web mode. This modem uses HTTP/HTTPS for access, i.e., connects directly it's IP address, then the user enters a username and password. At that point, the the modem switches to HTTPS for control.

With this recent update, there is NO WAY to access the modem for any work, or upgrade the HTTPS certificate on the modem. This is a BUG.

What should happen is that if the web site will accept a HTTP connection, Firefox should NOT refuse connection or test for security issues UNTIL the user or the device switches to HTTPS.

As an aside, I've used Firefox on this Zywall modem for years until recently.

Fake MCAFEE SECURITY ALERT KEEP POPPING UP in the last 24 hours. How do I get rid of this? I do have McAfee and ran a scan. Scan results no virus. I do not want to lose the current tabs session that I have open, if possible??????

Got a problem on two separate computers: Mozilla Crash Reporter keeps popping up when Firefox is not even running. I'm guessing that my antivirus avast is interfering with the update service. I'm I right or wrong? Otherwise, does anyone know how to interpret this? This is the report:

AdapterDeviceID: 0x6818 AdapterDriverVersion: 27.20.20903.8001 AdapterSubsysID: 25541458 AdapterVendorID: 0x1002 AvailablePageFile: 23509377024 AvailablePhysicalMemory: 4957573120 AvailableVirtualMemory: 138522866925568 BackgroundTaskMode: 1 BackgroundTaskName: backgroundupdate BlockedDllList: BuildID: 20231116134553 CPUMicrocodeVersion: 0x2f ContentSandboxCapable: 1 ContentSandboxLevel: 6 CrashTime: 1701389728 GpuSandboxLevel: 1 HeadlessMode: 1 InstallTime: 1701135841 LastStartupWasCrash: 0 LauncherProcessState: 0 ModuleSignatureInfo: {"Avast Software s.r.o.":["aswJsFlt.dll","snxhk.dll","aswhook.dll"],"Microsoft Windows":["ondemandconnroutehelper.dll","twinapi.dll","wscapi.dll","NapiNSP.dll","pnrpnsp.dll","wshbth.dll","winrnr.dll","ktmw32.dll","wsock32.dll","webauthn.dll","wininet.dll","dbgcore.dll","Windows.UI.Immersive.dll","iertutil.dll","Windows.Globalization.dll","DWrite.dll","srvcli.dll","urlmon.dll","BCP47mrm.dll","winmm.dll","TextInputFramework.dll","InputHost.dll","Windows.UI.dll","Bcp47Langs.dll","icm32.dll","FWPUCLNT.DLL","rasadhlp.dll","winhttp.dll","npmproxy.dll","ColorAdapterClient.dll","mscms.dll","dhcpcsvc.dll","dhcpcsvc6.DLL","winnsi.dll","dbghelp.dll","twinapi.appcore.dll","WindowManagementAPI.dll","version.dll","netprofm.dll","nlaapi.dll","propsys.dll","wtsapi32.dll","WinTypes.dll","dcomp.dll","CoreUIComponents.dll","CoreMessaging.dll","uxtheme.dll","dwmapi.dll","kernel.appcore.dll","windows.storage.dll","gpapi.dll","dxgi.dll","rsaenh.dll","ntmarta.dll","IPHLPAPI.DLL","winsta.dll","dnsapi.dll","netutils.dll","mswsock.dll","cryptsp.dll","cryptbase.dll","wldp.dll","ntasn1.dll","ncrypt.dll","msasn1.dll","devobj.dll","sspicli.dll","userenv.dll","profapi.dll","gdi32full.dll","ucrtbase.dll","KERNELBASE.dll","bcrypt.dll","wintrust.dll","win32u.dll","crypt32.dll","msvcp_win.dll","cfgmgr32.dll","bcryptPrimitives.dll","kernel32.dll","shlwapi.dll","oleaut32.dll","clbcatq.dll","rpcrt4.dll","user32.dll","advapi32.dll","sechost.dll","nsi.dll","psapi.dll","shell32.dll","msctf.dll","setupapi.dll","SHCore.dll","ole32.dll","ws2_32.dll","msvcrt.dll","gdi32.dll","combase.dll","imm32.dll","ntdll.dll"],"Microsoft Windows Software Compatibility Publisher":["VCRUNTIME140_1.dll","msvcp140.dll","VCRUNTIME140.dll"],"Mozilla Corporation":["firefox.exe","xul.dll","freebl3.dll","nss3.dll","osclientcerts.dll","nssckbi.dll","mozglue.dll","softokn3.dll","gkcodecs.dll","lgpllibs.dll"]} MozCrashReason: Shutdown hanging at step XPCOMShutdownThreads. Something is blocking the main-thread. Notes: FP(D00-L1000-W0000100-T000) DWrite? DWrite+ WR? WR+ ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 403195 ShutdownProgress: xpcom-shutdown-threads ShutdownReason: AppClose StartupCacheValid: 1 StartupCrash: 0 StartupTime: 1701389663 SubmittedFrom: Client SystemMemoryUsePercentage: 42 Throttleable: 1 TotalPageFile: 30027948032 TotalPhysicalMemory: 8553111552 TotalVirtualMemory: 140737488224256 URL: UptimeTS: 658.43255 Vendor: Mozilla Version: 120.0 Winsock_LSP: MSAFD Tcpip [TCP/IP] : 2 : 2 : 1 : 6 : 0x20066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192

MSAFD Tcpip [UDP/IP] : 2 : 2 : 2 : 17 : 0x20609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192 
MSAFD Tcpip [RAW/IP] : 2 : 2 : 3 : 0 : 0x20609 : 0xc : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192 
MSAFD Tcpip [TCP/IPv6] : 2 : 23 : 1 : 6 : 0x20066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
MSAFD Tcpip [UDP/IPv6] : 2 : 23 : 2 : 17 : 0x20609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
MSAFD Tcpip [RAW/IPv6] : 2 : 23 : 3 : 0 : 0x20609 : 0xc : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
AF_UNIX : 2 : 1 : 1 : 0 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : a00943d9-9c2e-4633-9b59-0057a3160994 
RSVP TCPv6 Service Provider : 2 : 23 : 1 : 6 : 0x22066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP TCP Service Provider : 2 : 2 : 1 : 6 : 0x22066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP UDPv6 Service Provider : 2 : 23 : 2 : 17 : 0x22609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP UDP Service Provider : 2 : 2 : 2 : 17 : 0x22609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
Hyper-V RAW : 2 : 34 : 1 : 1 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 1234191b-4bf7-4ca7-86e0-dfd7c32b5445 
MSAFD L2CAP [Bluetooth] : 2 : 32 : 1 : 256 : 0x20006 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9fc48064-7298-43e4-b7bd-181f2089792a 
MSAFD RfComm [Bluetooth] : 2 : 32 : 1 : 3 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9fc48064-7298-43e4-b7bd-181f2089792a

XPCOMSpinEventLoopStack: default: nsThread::WaitForAllAsynchronousShutdowns useragent_locale: en-US

This report also contains technical information about the state of the application when it crashed.

I had 2 windows open, closed one, lost all of my tabs. Restore didn't work. I tried to restore by renaming session-store-backups folder files. doesn't work. There is a file called upgrade.jsonlz4 from November, maybe that could be used to restore tabs somehow?

Whenever I change my VPN (not Mozilla VPN) status, Firefox will refuse to connect for something like 30 seconds then times out, leaving me with a blank screen. I have wait until that interval has passed before I can retry, otherwise it will repeat the freeze. This happens whenever I turn my VPN on/off or switch to a different VPN server. It happens only with Firefox. Chrome and my email client have no problems whatsoever. I think it's some kind of DNS caching problem within Firefox as the problem doesn't happen if I visit a site that I hadn't visited very recently. There's immediate response if I do that. I have DNS over HTTPS and secure DNS turned off in the settings, so it can't be those.

Anyone else have this problem? I wish there was some way to clear Firefox's DNS cache other than having to go into about:networking

I have been receiving the following error code 'PR_END_OF_FILE_ERROR' on several website on my Firefox browser. Sometime, not all the time, I get the same error message while trying to use YouTube, while other times the site loads but says that I am offline and no internet connection. I have done all of the fixes that they say to use online and nothing seems to work. YouTube will occasionally work but none of the thumbnails will show up. Then there are other site that work fine.