Diễn đàn hỗ trợ Firefox

When I open Firefox I get a message telling me "Failed to read configuration file. Please contact system administrator". When I click OK Firefox opens normally and seems to be fine. Not sure what is going on here. Any ideas why this is happening and how to get rid of it?

Windows 10 64-bit Firefox 115.3.1 64-bit

Any assistance will be greatly appreciated. Thanks

I wanted to provide an update for a closed thread I opened ~3 months ago. That topic can be found here:

https://support.mozilla.org/en-US/questions/1384191#question-reply

UPDATE I reinstalled Windows - "downgrading" to Windows 10 - same problem; videos of any sort from any source did not play in Firefox, sound or anything.

Firefox now plays videos after navigating to the .exe file, turning on "Windows Compatibility Mode", and setting it to Windows 8.

I recently accessed Firefox Monitor. Living in Australia we had a large Data Breach from Optus (Phone carrier) in Sept last year. Yet it was not litsed in your list. Please advise

Few days after installing a strange border started appearing around the app unless I'm in full screen which I don't like to use. What's happening and how can I stop this?

hello, I wrote to you telling you that when i facetime on facebook i cannot see or hear anyone and you answered me to try this or that. you said to go into permissions and make sure that my camera and microphone had facebook to have permission and when i facetime to go into permissions there and click off the use default button and click allow or always ask. i have already done this and still have the problem. well I know what is happening and it is your fault firefox. when my sister, who is sitting next to me rings me on facetime (and was helping try to fix this problem) and it still didn't work, while she just kept the facetime open, she watched me go into the permission box again on the padlock page, the settings i put ALLOW were gone and the use default box was ticked again. so this time i put always ask. and came back out of the permissions page and then went straight back in, and guess what.....every time i leave the permissions page, it goes back to use default. MY SETTINGS ARE NOT BEING SAVED. THERE IS NO SAVE BUTTON BECAUSE YOU REMOVED IT. I MAKE A SETTING, COME OUT OF THE PAGE AND IT IMMEDIATELY REMOVES MY SETTINGS. YOU NEED TO FIX THIS BECAUSE NOTHING IS WORKING BECAUSE IT CONTINOUSLY GOES BACK TO DEFAULT. IF YOU DO NOT FIX THIS ASAP I AM SHUTTING YOU DOWN AND GOING TO BING AS MY BROWSER

Does anyone out there know of a replacement for the Tab Groups replacement app? I have not updated Firefox past the v.55 only because I don't think it would work w/ any newer versions. I have found this to be the very best app I have ever used as I need to do a lot of research online and need something that will show all the windows and tabs on one page so I can easily go back and forth to a particular group quickly. Without this, I would have to spend hours finding the info and would only have one window in which to work. Ideally, a replacement would be able to use all the window/tab info I now have. Is there some way I could use this in some sort of legacy mode? I have several legacy apps, but can't readily recall how to do so. I think I tried this w/ the Tab Groups app and it didn't work, but am not certain. Suggestions much appreciated! Thanks, Wolfgang

I cannot stay Signed In on Zoom's website (and I used to be able to). When I hover over the Information icon, I see a message that I have to enable Functional Cookies (see attached). I have cleared my cache and explicitly allowed Zoom, but no luck. I don't have this problem in other browsers.

Since this took me awhile to figure out I thought this could help other people.

firefox Did Not Connect: Potential Security Issue

Also you can manually add sites in preferences. Privacy & Security Preferences → View Certificates... → Servers → Add Exception

What has happened to all of my Task Bar / Tool Bar? As of today, Sunday Nov. 26th, everything is gone. In addition the browser itself looks "different" some how.

Windows 11 keeps trying to change my browser from FF to their Edge spyware/virus (it asks EVERY time I start FF). I managed to get it stopped once - difficult and time-consuming, but the next Windows update re-installed it. I have used FF for 15 - 20 years and it works superbly for my needs and nothing from MS ever seems to work.

How can I stop this?

Thanks, Wolfgang

I do not have any mobile device to sync with Firefox. HOWEVER, I would like to sync with Outlook.com from Microsoft. Centurylink my ISP provider was off-line for quite a while so they could create a better email program and when they finally came back online, last week, there were a list of things in computer language that I am supposed to do but do not understand. Like you, whenever I want to ask a question I have to send it via email then the response is the same thing listed in their instructions, NO HELP at all. Now, on a daily basis, I am receiving emails from Microsoft Outlook stating "Please update your credentials for the account Rhonda89@q.com." "It looks like we don't have permission to get email for Rhonda89@q.com."

The daily emails from Microsoft Outlook started on October 24, 2022, about the time Centurylink Email came back on line, I think. They did not send any messages advising us of this. I happened to find the information when I looked for it online.

I am still attempting to reach someone at Centurylink for help...lol

In the meantime, is there anything you can do to assist in this endeavour.

Thank you, Rhonda Caywood

I set up 4ows of shortcuts on the home page. Almost ever shortcut had an icon. Now all of the icons are gone except for youtube, ebay and amazon. Not sure what happened to the rest of the icons. Has this happened to anyone else?

i get 'server not found' and 'try again' window when trying to access sites and even within sites if i manage to get on - after several 'try again' clicks

could this be related to recently installed fibre optics or do i have a virus - my anti-virus protection is bitdefenders

how can i change text color for downloaded themes  ? as the photo this recommended theme wold be better if i can change colors of the text on tabs.. couldn't find a recommended extensions to do this job

After update to 115.2.1, FF crashes at startup for one User, but not the other. FF Safe Mode also crashes (SHIFT key). I tried running the 115.2.1 install on the problem User, but it also crashes right after completion. The second user is handicapped, so I have yet to try to uninstall/reinstall because FF runs on her User and I hate to screw things up so that she is locked out.

• • • JUST NOTED - Chrome also crashes with same NTDLL error (same DLL version number). Did the FF update do something with the NTDLL file?

Problem signature:

 Problem Event Name:	APPCRASH
 Application Name:	firefox.exe
 Application Version:	115.2.1.8655
 Application Timestamp:	64ffdc5f
 Fault Module Name:	ntdll.dll
 Fault Module Version:	6.2.9200.17581
 Fault Module Timestamp:	5644f0f7
 Exception Code:	c000010a
 Exception Offset:	00000000000e1e80
 OS Version:	6.2.9200.2.0.0.768.101
 Locale ID:	1033
 Additional Information 1:	ac05
 Additional Information 2:	ac0507478d1c5bd693cfc4fe3987e900
 Additional Information 3:	ac05
 Additional Information 4:	ac0507478d1c5bd693cfc4fe3987e900

Terry, thanks for writing me but I even have problems when I only use a couple tabs and I rarely use Facebook or Reddit. Yet even with limited use of Firefox it inevitably expands and expands using up more and more memory until I have to exit Firefox. Is there anything I can do to limit Firefox?

I want to be able to open any links I choose in new tabs/windows, either with MMB or context menu. Many sites use JavaScript to thwart this - only allowing the link to open in the same tab. aboutconfig settings make no difference for these sites. Disabling JavaScript also fails as inevitably the offending website then won’t work at all. I have not been able to find an add-on which achieves my aim either.

It’s particularly annoying when there are a large number of links and I want to open all of them in new tabs. The only way I have found is to copy the URL of the offending page into a number of new tabs and then click the links in each tab.

Also see Bug 55696