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Firefox will not open in Windows 10

Hello, Recently, (past month or so) I have had difficulty opening Firefox on my PC. Found suggestion of renaming the .exe which did work, but now it will not open AT ALL… (閱讀更多)

Hello,

Recently, (past month or so) I have had difficulty opening Firefox on my PC. Found suggestion of renaming the .exe which did work, but now it will not open AT ALL. Uninstalled, and re-installed. nothing. Renamed .exe. Nothing. It will OPEN as admin, but cannot access any settings or browse. I am at a loss, and really do not want to go back to Chrome.

Previously attempted uninstalling ESET antivirus and Defender, and still would not open.

Thank you!

-Tim

Obeythemoo 於 2 個月前 詢問

Kaasplank3333 最近回覆於 2 個月前

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Launching FireFox Portable from the network connected on multiple devices

When trying to launch the browser from a network folder, I encounter the errors shown in the screenshots. If I launch the browser on one computer, everything is ok, but i… (閱讀更多)

When trying to launch the browser from a network folder, I encounter the errors shown in the screenshots. If I launch the browser on one computer, everything is ok, but if I need to launch it on at least the second one, I encounter this error until I close the browser on the first one. I don’t know what could have happened, because I didn’t touch the configuration and everything worked fine for us last year. Nothing was updated or changed. Firefox Portable ini file configuration:

Добрый Лис 於 6 個月前 詢問

jonzn4SUSE 最近回覆於 6 個月前

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Opening the Firefox window

When I first open Firefox from the icon in my taskbar the opening window says the following: 'Unable to connect Firefox can’t establish a connection to the server at 0.0… (閱讀更多)

When I first open Firefox from the icon in my taskbar the opening window says the following:

'Unable to connect Firefox can’t establish a connection to the server at 0.0.0.4. The site could be temporarily unavailable or too busy. Try again in a few moments. If you are unable to load any pages, check your computer’s network connection. If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.'

However this is only the first window, after that I can open a new tab in the same window without any problems.

I have uninstalled and reinstalled Firefox without avail. Can anyone help please?

Glynn Bowser 於 8 個月前 詢問

Mutaz Awad 最近回覆於 8 個月前

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Does this have something to do with Firefox?

Every so often for the past few days this "unfinished" program window has appeared on my pc on top of a normal Firefox window (see attached png). Does this have something… (閱讀更多)

Every so often for the past few days this "unfinished" program window has appeared on my pc on top of a normal Firefox window (see attached png). Does this have something to do with Firefox? I think the same thing appears when I first open Firefox, then it gets "filled in" and appears as a normal Firefox window. I am running Firefox 133.0.3 (64-bit) on Windows 10 Pro Version 22H2 build 19045.5247 Windows Feature Experience Pack 1000.19060.1000.0.

Ron Zoscak 於 12 個月前 詢問

Ron Zoscak 於 11 個月前 解答

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language

Sometimes when I do a google search the results come up in a foreign language! I am in the USA and speak only english. Changing my preferences doesn't always maintain t… (閱讀更多)

Sometimes when I do a google search the results come up in a foreign language! I am in the USA and speak only english. Changing my preferences doesn't always maintain the fix.

gksusan161 於 12 個月前 詢問

jscher2000 - Support Volunteer 最近回覆於 11 個月前

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Firefox opens infinite crash dialogue boxes and explodes my CPU

When I try to open Firefox it opens hundreds of crash reporter dialogue boxes and makes my computer slow to a halt, only restarting my computer can stop the onslaught. Re… (閱讀更多)

When I try to open Firefox it opens hundreds of crash reporter dialogue boxes and makes my computer slow to a halt, only restarting my computer can stop the onslaught. Resolving a dialogue/close all doesn't help.

I've tried holding shift to start in troubleshoot mode, but it just opens the crash boxes rather than the 'do you want to start in troubleshoot' box.

I've run a scan with Malwarebytes, no hits, and Windows says there's no updates for me. I can't see any specific crash number, the 'submit' file in my Crash Reports folder says this:

[WARN crashreporter::net::ping] not sending legacy crash ping because no ping directory configured [WARN crashreporter::logic] not updating the events file; no events directory configured [ERROR crashreporter::net::http] background task error: process failed (exit status exit code: 1073807364) with [ERROR crashreporter::net::http] background task error: process failed (exit status exit code: 1073807364) with stderr: stderr: er::glean::uploader] failed to send glean ping: process fail[ERROR crashreporter::glean::[ERROR crashreporter::net::http] background task error: process failed (exit status exit code: 1073807364) with stderr: upload] Recoverable upload failure while attempting to send ping 9746c2ff-0e8b-47b5-bc82-3a14fbf8a[ERROR crashreporter::net::http] background task error: process failed (exit status exit code: 1073807364) with stderr:

-- 0

[WARN glean_core::upload] Recoverable upload failure while attempting to send ping 7be8924c-9a93-4169-8ff3-c29b26b5f75c, will retry. Error was RecoverableFailure { unused: 0 } [WARN glean_core::upload::directory] Cannot find ping file to process 7be8924c-9a93-4169-8ff3-c29b26b5f75c

                                                                                                                                                                                                                                                         [ERROR crashreporter::net::http] background task error: process failed (exit status exit code: 0xc000026b) with stderr:

And here is what I get when I click 'details' on the crash reporter:

BuildID: 20250717180000 CrashTime: 1753234799 InstallTime: 1753232273 ModuleSignatureInfo: {"Microsoft Windows":["bcryptPrimitives.dll","wininet.dll","urlmon.dll","srvcli.dll","iertutil.dll","ktmw32.dll","version.dll","wsock32.dll","propsys.dll","uxtheme.dll","kernel.appcore.dll","windows.storage.dll","ntmarta.dll","netutils.dll","CRYPTBASE.dll","wldp.dll","ntasn1.dll","ncrypt.dll","msasn1.dll","sspicli.dll","profapi.dll","wintrust.dll","ucrtbase.dll","gdi32full.dll","bcrypt.dll","KERNELBASE.dll","crypt32.dll","msvcp_win.dll","win32u.dll","sechost.dll","imagehlp.dll","gdi32.dll","shlwapi.dll","ws2_32.dll","oleaut32.dll","SHCore.dll","advapi32.dll","psapi.dll","imm32.dll","msvcrt.dll","shell32.dll","kernel32.dll","combase.dll","ole32.dll","user32.dll","rpcrt4.dll","ntdll.dll","kbdus.dll"],"Mozilla Corporation":["firefox.exe","gkcodecs.dll","nss3.dll","mozglue.dll","lgpllibs.dll"],"Malwarebytes Inc":["mbae64.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll"]} ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release StartupTime: 1753234797 SubmittedFrom: Client Throttleable: 1 UptimeTS: 2.0 Vendor: Mozilla Version: 141.0 WindowsErrorReporting: 1 This report also contains technical information about the state of the application when it crashed.ii

amiasiaworld 於 4 個月前 詢問

jscher2000 - Support Volunteer 於 4 個月前 解答

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Suggestion to improve the app ...

I use translation A LOT. (I'm learning a foreign language.) It would help to be able to move or resize the results window. Right now, it covers the original foreign langu… (閱讀更多)

I use translation A LOT. (I'm learning a foreign language.) It would help to be able to move or resize the results window. Right now, it covers the original foreign language text. I want to compare the translation with the original text and the fixed size and position of your results window makes that a lot more difficult.

Seigfried 於 10 個月前 詢問

Agent virtuel 最近回覆於 4 個月前

Firefox Desktop crashing on startup

Firefox was working perfectly up until this morning and I'm pretty sure there wasn't a new update today. But now when I open the app a new window will briefly pop up for … (閱讀更多)

Firefox was working perfectly up until this morning and I'm pretty sure there wasn't a new update today. But now when I open the app a new window will briefly pop up for a fraction of a second and then disappear. Unfortunately this prevents me from accessing troubleshoot mode or crash reports so i can't provide much information on specifics.

I followed the steps here: https://support.mozilla.org/en-US/kb/firefox-keeps-crashing-startup and they haven't worked so far. I tried a clean install and restarting my computer multiple times, but no dice. There also don't seem to be any compatibility issues with the most recent version in the release notes.

Deekester 於 5 個月前 詢問

jscher2000 - Support Volunteer 最近回覆於 5 個月前

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Firefox not opening

Hello! I am an avid user of firefox (especially with adblockers) on a windows 11 PC. Unfortunately, I have recently been experiencing an issue where when I attempt to ope… (閱讀更多)

Hello! I am an avid user of firefox (especially with adblockers) on a windows 11 PC. Unfortunately, I have recently been experiencing an issue where when I attempt to open firefox, a window will open for a split second before instantly closing again. My PC is up to date, I have tried refreshing firefox and doing a clean install, but cannot seem to overcome the issue, or even open it in safe mode. Does anyone have any advice? Many thanks in advance!

Leo 於 5 個月前 詢問

TyDraniu 於 5 個月前 解答

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Firefoxwont work at all

Whenever I close Firefox and try to reopen it, it brings up a system error that says, "The code execution cannot proceed because C:\WINDOWS\system32\pmls64.dll was not fo… (閱讀更多)

Whenever I close Firefox and try to reopen it, it brings up a system error that says, "The code execution cannot proceed because C:\WINDOWS\system32\pmls64.dll was not found. Reinstalling the program may fix this problem." I've tried completely deleting Firefox and reinstalling and it opens a new tab, but when I close it i get the same error message.

TheRealMayoy 於 6 個月前 詢問

Kissaki 最近回覆於 6 個月前

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Firefox doesn't start after installation of amdgpu driver

Hi, I have a laptop with an AMD Ryzen 7 8845HS CPU, including a Radeon 780M iGPU, running Ubuntu 24.04. In order to fully utilize the GPU by supporting OpenCL accelerati… (閱讀更多)

Hi,

I have a laptop with an AMD Ryzen 7 8845HS CPU, including a Radeon 780M iGPU, running Ubuntu 24.04. In order to fully utilize the GPU by supporting OpenCL acceleration I installed the additional drivers by: `sudo amdgpu-install --usecase=graphics,multimedia,opencl --opencl=rocr --opengl=mesa`

After that programs which benefit from OpenCL acceleration recognize the GPU, however firefox starts crashing with the following error msg:

XPCOMGlueLoad error for file /usr/lib/firefox/libmozgtk.so: libwayland-client.so.0: failed to map segment from shared object Couldn't load XPCOM.

It seems that the AMD GPU drivers registered their libraries in `/etc/ld.so.conf.d` as 10-rocm-opencl.conf, 20-amdgpu.conf which means that libraries within the given folders are found first.

This applies to the libwayland-client library, which is used by `/usr/lib/firefox/libmozgtk.s`:

ldd /usr/lib/firefox/libmozgtk.so | grep amd libwayland-client.so.0 => /opt/amdgpu/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007013767bf000)

Interestingly the same `libmozgtk.so` library is used by thunderbird:

ldd /usr/lib/thunderbird/libmozgtk.so | rg -i amd libwayland-client.so.0 => /opt/amdgpu/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007d44b0f41000)

However thunderbird just works fine, so I expect that there might be something wrong with firefox utilizing this library.

Maybe I should also mention, that I'm not even using wayland as desktop compositor, but good old x11:

echo $XDG_SESSION_TYPE x11

Is there any way to further debug this issue?

carcass_dev0 於 12 個月前 詢問

carcass_dev0 最近回覆於 11 個月前

Firefox trying to install helper tool and doesn't open at all

Here is what the message says: "Firefox is trying to install a new helper tool. Enter your password to allow this" I tried to install but Firefox won't open. Firefox icon… (閱讀更多)

Here is what the message says: "Firefox is trying to install a new helper tool. Enter your password to allow this" I tried to install but Firefox won't open. Firefox icon just bounces around, I have to force quit to stop it. I DO NOT WANT THIS TOOL BUT I WANT TO USE FIREFOX. By the way this is sent from my other user, as the problem is on my admin. user and I can't open Firefox to do anything!

yk933zen 於 2 個月前 詢問

Paul 最近回覆於 2 個月前

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Issue with incorrect Japanese font on 135

Hello, I have encountered an issue on some websites where the Japanese text is using the font "Microsoft YaHei" when it should be using "Meiryo." Some examples are on th… (閱讀更多)

Hello,

I have encountered an issue on some websites where the Japanese text is using the font "Microsoft YaHei" when it should be using "Meiryo." Some examples are on the website bluesky, and bold text on Twitter such as in usernames.

I originally thought it was an issue on my end or in Windows, but when checking other programs and websites such as dengekionline and the non-bold text on Twitter it is using the correct font which I have confirmed via the inspector under the font section. When starting Firefox in safe mode it seems to use the correct font on the previously mentioned websites, so I disabled all my extensions and themes and this did not resolve the issue. I did a Firefox Refresh and this also did not resolve the issue.

I am not familiar with the intricacies on the Firefox about:config to really delve into the exact cause, so I ended up just reverting back to Firefox 134. On Firefox 134 with my same extensions previously the font is now back to Meiryo as it should be which leads me to believe it is something that was changed in Firefox 135. One thing I am considering is that the Japanese text is being recognized as Simplified Chinese by Firefox 135 as Simplified Chinese uses the Microsoft YaHei font as a default.

I have attached some photos that shows my Japanese font settings, and the same post by a user one on Firefox 135 which is using Microsoft YaHei and another on Firefox 134 which is using the correct Meiryo. I have also tried disabling the "Allow pages to choose their own fonts, instead of your selections above" and then restarting on 135, but this did not resolve the issue. Thank you for your consideration.

dxrdaxta 於 10 個月前 詢問

dxrdaxta 最近回覆於 10 個月前

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Firefox Will Not Update When I Click The Restart Button

Firefox will not update when I click the restart button. Firefox restarts but does not update. Closing Firefox manually (X) several times did not help. I had to restart m… (閱讀更多)

Firefox will not update when I click the restart button. Firefox restarts but does not update. Closing Firefox manually (X) several times did not help. I had to restart my laptop and then Firefox updated. This started happening the update before 136.0.3, which is my current version. I don't want to keep restarting my laptop every time there is a Firefox update, which seems to be happening more frequently.

lyradd 於 8 個月前 詢問

Agent virtuel 最近回覆於 8 個月前

Firefox will not open

Today Firefox on my laptop will not open. There is a message (?from Google?) saying it is because cookies are switched off. I have not knowingly made any changes to cooki… (閱讀更多)

Today Firefox on my laptop will not open. There is a message (?from Google?) saying it is because cookies are switched off. I have not knowingly made any changes to cookie settings or installed any new features. A new Windows update installed recently (I am on Windows 11) and also a new version of Edge (although I never use Edge myself). The Google guidanc eon how to fix the situation only deals with Chrome. So how, please, can I get Firefox working again?

rjmmellor 於 2 個月前 詢問

t.r.ernst 最近回覆於 2 個月前