Firefox Community Forum

Hi,

I'm using IPv4 as well as IPv6 addresses in my home network. But Firefox uses always the IPv4 connection when I open a website. When I open the same website in MS Edge, the IPv6 connection is used.

I've captured the network traffic during opening a website in Firefox, which is reachable over IPv4 and IPv6. First I see two DNS queries (A and AAAA) for the domain name. Both responses containing the correct IP address, and they arrive nearly at the same time at the client. Next I can see the TCP handshake. But it's send between the IPv4 address only. No IPv6 connection was attempted.

When I run the IPv6 test at https://test-ipv6.com, the IPv6 resuls are nearly fine. Only the web browser test says "Your browser has real working IPv6 address - but is avoiding using it."

When I run the same test in MS Edge, all tests are fine.

So it seems that this is not a OS or network issue. It affects Firefox only.

What I've already tried:

• Disabled all extensions
• Created a new profile
• Used the IPv6 address of the website instead of the FQDN -> Works fine.
• Checked DNS cache of Firefox (about:networking). It contains the IPv4 and IPv6 addresses of the requested websites

I guess that Firefox prefers the A record for some reason. But I've no idea why. Has anybody an idea what could causing this?

Thanks.

Jas Man

When plugshare.com loads, there is a prominent search box at the top left corner. However it is missing the menu icon (see attached pic) as well as the search icon. This is happening on 2 different machines running Ubuntu 22.04.

Please fix. Google Chrome displays just fine; see attached pic.

Firefox update required me to restart Firefox. I was unable to save a bunch of work I had done in a particular tab because Firefox seems to have refused to connect to the site I was working at until I update. THAT SUCKS!

Hello,

For two firefox updates, I've been having an issue where after about an hour or two of using firefox (it varies), video players on most websites will stop working. Almost every website except for Youtube's videoplayer stops working after an hour, all at once. Restarting firefox fixes it, but it's very annoying to restart firefox every couple of hours, and seems like a problem.

The following things didn't fix it: clearing my cache, disabling my addons one by one, turning off hardware acceleration, trying to watch the video in a private window, or reinstalling firefox. I don't know what's left to try. It has nothing to do with my audio devices.

Please advise, thank you!

This is a recent change -- the desktop browser didn't do this until a few weeks ago. It now plays slideshows automatically. This feature is called Auto-Rotation, but it has nothing to do with rotating the display on a phone or tablet (although that feature has the same name). This feature automatically rotates among the slides in a slideshow. It's incredibly annoying, especially since I typically forget its on (or don't realize I'm looking at a slideshow) and it changes to the 2nd slide just as I have begun reading the 1st. I then have to turn Auto-Rotation off and go back to the 1st slide to continue. When I remember, I have to hurry to turn Auto-Rotation off before it moves to the 2nd slide. Is there any way to turn this off? I can't find one by looking through Settings, and there's nothing on this subject in Help, that I can find. For what it's worth, whoever thought this was a good idea was wrong, but if there's a way to change so it's not the default, I'll be content.

"OpenH264 Video Codec provided by Cisco Systems, Inc." plugin will sit in the "will be installed shortly" status forever if you have HTTPS-Only mode enabled. I have been pulling my hair out for the last few days trying to figure out why I couldn't play YouTube or many other sites videos.

Turns out the site that the library is downloaded from has a bad certificate installed: https://ciscobinary.openh264.org/libopenh264-2.3.0-linux64.6.so.bz2

``` Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for ciscobinary.openh264.org. The certificate is only valid for the following names: a248.e.akamai.net, *.akamaihd-staging.net, *.akamaihd.net, *.akamaized-staging.net, *.akamaized.net

Error code: SSL_ERROR_BAD_CERT_DOMAIN ```

OS: Fedora 36 Firefox Version: 104.0 (64-bit)

For the past 8-10 days, every time I try to log-on to: https://selfservice.telkom.co.za/rococo/public/content/interstitial I click "Login" under the Mobile & Home heading and I receive the following message returned.

Bad Request The request could not be understood by server due to malformed syntax.

I have used MS EDGE browser and do not get the same problem, it log's-on OK.

As such it seems that it is a Firefox problem.

I'm a gamer and alt+tab considerably often. Most of the time I end up on FireFox because I need to look at a map or browse reddit while I'm in queue. However, whenever I alt+tab frequently a bookmark will get selected as if I am clicking and dragging. The bookmarks on the bookmark tool bar always end up in different places. Is there a way to lock these links in place so I can't move them or do I have to resign myself to fixing it every day?

www.google.com. PR_END_OF_FILE_ERROR www.facebook.com. PR_END_OF_FILE_ERROR Hi, This occurred after a moment of power loss during a thunderstorm on my Lenovo desktop. All my other sites as far as i can tell are ok. I used Edge and was able to access FB and Google on Desktop] i checked and the current version of firefox is installed on desktop

even weirder, i can access both google and FB on my laptop with firefox. I've tried syncing the two with having bookmarks etc. i can sync from laptop to desktop but not vise versa.

i thought I'd uninstall and reinstall firefox but i don't want to lose any info esp my Bookmarks on the Desktop hence why i was trying to sync the two.

My desktop is older, maybe 5-6 years, my laptop is 1 year old. Dunno if this matters. thanks, Jan

Hi all,

Recently, my win 10 crashed and although I managed to recover some operative, I found to my horror that the desktop screen text size and contrast cannot be changed now. The current default setup is a real eye sorer, so I opened personalization settings but there is nothing on how to change this very theme, other than other posts suggesting entering the regedit system files. I am very reluctant to tinker with this given the Win10 application crashes. Running maintenance doesn´t do much. I notice that Firefox also has access to this very text size and font theme for web domains, but I am very wary again of tinkering an unknown. What the heck can one do, confidently without the system resetting itself? One thing is for sure, it seems Win10 home edition update 21H1/2 versions is basically treating users very badly, as if MS wants to ignore them. Bless us all when the embedded caption suggests "ready to update to Win11". I´m highly inclined to bin it.

FireFox keeps putting a .jpg at the end of any file I try to download with .exe as its extension and adds a .jpg, example, when I download QU210InstallFiles.exe it changes it to QU210InstallFiles.exe.jpg and I cannot there for install the program because it has the .jpg added to it and it wants to open in windows media viewer instead. It never use to do this, what have you guys done....uuhhhh, any help would be nice and I thank you. Daniel Goggia

My System Mechanic malware search system has quarantined a virus located in two Firefox locations: Virus is W32/Trojan.YZST-9002 LOCATE IN: C:/PROGRAM FILES/MOZILLA FIREFOX/UNINSTALL/HELPER.EXE C:/PROGRAMFILES/MOZILLA FIREFOX/MAINTENANCE SERVICES_UNINSTALL... I will use the delete process and remove them and watch for future loads.

Hi,

Since recent updates to Firefox I get a purple pop-up listing Trackers at the bottom right of my screen every time I open a new webpage. I'm happy with my PC security settings and have good protection software running - but this pop-up listing Trackers is becoming a nuisance.

Is there a way to stop Firefox displaying the Tracker notification pop-ups whilst still intercepting and blocking them in accordance with my security settings?

I see that other users have asked the same question, but it does not seem to have been answered yet.

Thanks,

Peter

Hi Mozilla community,

The Developer Tools -> Storage -> Cookies pane shows cookies currently being stored by Firefox.

If I close my browser, these cookies are automatically deleted. However, if I follow the steps on [1], the cookies are still there, and don't get deleted. *Why?*

Thanks in advance!

Steps to reproduce:

- Start a new Firefox session
- Open Developer Tools -> Storage -> Cookies and see that the list is empty
- Go to youtube.com and click Accept All on the cookies popup
- Developer Tools -> Storage -> Cookies now shows a cookie from YouTube, as per the attached screenshot
- Go to Settings->Privacy & Security->Cookies and Site Data -> Clear Data -> Clear
- Go back to Developer Tools -> Storage -> Cookies and click on the refresh icon
- The YouTube cookie is still there
- However either of the following actions will correctly delete this cookie:

1) closing firefox (with Always Use Private Browsing Mode enabled) 2) manually deleting the cookie from the list in Developer Tools -> Storage -> Cookies

[1] https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox

After last update V104.0.2 fire fox will not allow me to access router to change settings message given, unable to connect, can I revert to previous version of firefox as always worked before update

Hi support team,

Yesterday, I suddenly removed all logins and somehow my profile was synced to the cloud.

Fortunately, I still keep all login files (json and key db files), I tried to recovery all my logins, it was successfully.

But, right after that my profile was synced from the cloud to my machine then whole logins were clear.

So how can I overwrite my profile in the cloud so I can totally recovery my old logins?

Kindly help to give my some advice.

Thanks!

This computer is about to crash so I have a laptop backup. I have copied my Firefox profile before from my last computer to this one that is crashing without issues at all. It copied all of my bookmark data, settings, logins, themes, add-ons, etc last time. This time it refuses to read any of the files copied. No add-ons, no bookmarks no nothing. I need this taken care of ASAP as this comptuer is on it's way down and the monitor likely only has days left the way it's running. Why does copying profiles no longer work? I know how to do it and I did the exactly the same as I did before. It's been an hour fighting with it and nothing is working. I need this done ASAP.

I use Firefox to download, copy, and store WikiSpecies pictures.

Currently, my .../Documents/WikiSpecies/Animalia_Plantae_8 directory holds what it says are 90,876 items, totalling 11.5 GB. I have plenty of unused space in that directory (over 91 GB), so space is not an issue.

Lately, when I try to install a new picture, I keep getting a warning that the picture is already stored. This MAY be because I am running out of new pictures, but I can't tell.

Is there any capacity limit to a WikiSpecies directory?

My new Windows 11 laptop forces me to use the "Mail" app to forward links by email using the "email a link to this page" utility feature in the Firefox toolbar Prior to this, my old laptop would just use Outlook which was quicker/better.

The multi-step method using Mail was cumbersome so in trying to designate Outlook as the sending vehicle over Mail, I designated a non-performing solution which is now preventing me from emailing links (and captured webpage info) at all. I would like to migrate back to Mail or find the correct choice for Outlook but the "email a link to this page" in the Firefox toolbar does not work now as a result of my poor choice.

Anyone know how to fix this? I have "restored factory defaults" and other on the toolbar features but does not help. This was apparently an unrevocable choice.

John