All Products Community Forum

If I configure DoH in Windows 11, Firefox is unable to make any name lookups.

Originally I had DoH configured in Firefox, I wanted to use a Custom provider so I entered the details, and this worked initially.

I then configured the Windows 11 OS itself with the DoH custom provider, and this also worked in other apps, I could also use nslookup to successfully perform name lookups.

However, after configuring DoH in the OS, when I returned to Firefox, I could no longer access any websites. If I reconfigured Firefox to use CloudFlare or NextDNS with DoH, they also would not work. If I disabled DoH in Firefox and used regular DNS, Firefox was still incapable of performing any name lookups and accessing any websites. Only when disabling DoH in the OS did Firefox begin working normally again. I re-enabled my custom DoH in Firefox and it works as long as I do not enable DoH at the OS level.

Is this a bug?

Firefox 129.0.1 (64-bit)

Whenever i open firefox the tabs just crashes. there is nothing but a blank screen with a tab crash reporter. any tab or anything i try to open just gives a tab crash. the crash report is this: bp-92ae3e9d-16cb-4655-a0df-8ce150240816

I'm running Windows 11 and Firefox 129.0.1 I open Firefox, using no connections to any website, still my Avast blocks connection from 3245.UK "because it is infected with URL:Blacklist" , every few minutes. Any idea???

Firefox Browser 129.0 64-bit Extensions: Adblock Plus, Adobe Acrobat Windows 11 Pro V23H2 - OS build 22631.3958 MS Windows Security No malware, etc. found

Intermittently find browser open on its own @ homepage without any action on my part.

When I open a .jpg file, the Firefox web browser window width is too big. I want to change the default window width. Which item in about:config controls this setting and what value should I enter to have a default window width of approximately half the screen size?

Hello!

When I try to log into a medical chart I keep getting the following message,

Oops!

Server is missing the required Special Updates: E10513993, E10515928, E10516261, E10516347, E10516634, E10517430, E10517163, E10518158

I have the latest Firefox update and can't find the above updates to install them. Please help. Thank you!

Hey,

So my Question is is there any way to prevent Firefox to change the Profile after Updating. Because i work in IT thats why the Security is a Problem so i cant just leave an older Version on every System. The Problem is the Customer dont want to change it everytime.

I would really appreciate it if someone has an Solution. 😊

Hi,

In the older Firefox version (92), I could instantly open JNPL files by selecting "Open with Default Use JAVA (TM)". However, in the latest Firefox version 127, while the option is still available, it doesn't instantly open JNPL files. Every time I have to click to open the JNPL file.

Hello. I got a new pc and I am trying to sync my Mozilla account right now but I am not getting a the code to my email so I can not login to the account. The mail in question is *@cock.li that I have all my old data on.

Most tabs that I open now crash. This has been a steadily building problem that now has made the system basically unusable. I did try clearing history, cookies, etc., but that did not help. Even working tabs can crash when I go back to view them. It doesn't matter if it is a saved site, or a brand new one typed in.

I've been using Firefox for years on Windows 10 and earlier, and I just got a new Windows 11 laptop. On the new machine my bookmarks sidebar doesn't persist. I launch Firefox and open it, but when I exit Firefox and launch it again the sidebar is gone. I have to re-open it every time. This is not the behavior I experience on my other machines. Is there a setting in about:config that I need to change?

Just starting up Firefox on my Windows 11 desktop initiates 9 firefox processes - see attached. Is there anyway to reduce the number of processes and the memory they seem to occupy by possibly going into the Windows registry and making changes to any Firefox configuration settings? If I dont get a satisfactory solution I will have to uninstall Firefox and use the default MS Edge which is not my preferred browser choice.

I use Firefox Nightly 131, because it have vertical tabs, but why you still have a empty top bar? can I hide it?What's the difference between that and horizontal tabs? It takes up just as much space.

I have a subscription to the FAZ and have always been able to read it in Firefox. Now that I have a new computer with the latest Windows 11 and the latest Firefox, I can no longer open the page https://zeitung.faz.net/. But it works fine in Google Chrome. Please tell me which settings I need to change so that I don't have to change browsers.