Firefox Community Forum

Each time I try to download patch or updates to my personal desktop software through FF, I receive an error message. 404 Bad Request - Request header or cookie too large.

How can I correct this as I have to download my updates for my software.  :)

Hi. Your browser recently has spikes in RAM usage, up to 96%. It really disturbs my business and my online gaming. It makes my computer lag like crazy.

I've been your loyal customer for more than a decade. Please, tell me what to do. I don't want to use some Chromium piece of crap because of this.

I am unable to load the video pages on prime video in firefox. Instead of loading the video's page, it gives me a black screen and says "That shouldnt' have happened. It looks like something went wrong on our side. Let's find you a great video to watch instead." It works fine in Chrome, and other streaming sites like Netflix also work. I tried upgrading firefox, and upgraded to 129.0 (64 bit), but the same error is still happening. I contacted Amazon support, they couldn't figure it out, and told me to talk to Firefox support.

I disabled ublock origin, and disabled trackign protection, and error still occurs.

Videos won't play in Firefox, fine in other browsers. Here is the site I wanted to view below.

https://10percentaday.com/tad-indicator-strategy-session/

With Firefox 129, I am unable to login "hellopoetry.com". After login attempt, I see:

"Error 403: CSRF verification failure...". 

See image for complete error message. This is new with version 129.

I am at a loss. I have disabled popup blocking and all installed extensions that have the ability to block popups while trying to print coupons from Qples (I'm trying to print a coupon for Angel Soft toilet paper). I have deliberately placed their domain https://offer.qpleshq.com in the ALLOW list for popups. I have changed every setting I can see to ALLOW that domain access to just about everything. But I can't make popups work. I haven't had any luck in Edge either (and Edge uses Chrome as a framework so anything that doesn't work in Edge is unlikely to work in Chrome). I even did the ctrl-I trick and ALLOWed every setting it showed for that page specifically. I cleared its cache/cookies from the ctrl-I menu and reloaded. Every single time I reload the page, it gives me the option to print (which I want to be able to do) or "save" (which just means emailing you a link to the same print page). If I tell it to print, I get an overlay that reminds me to disable my popup blockers (at which point I internally scream "but I have disabled every d*mn popup blocker I can find". Is there some hidden/secret setting I'm missing here? I don't know where else to look, and I would think enabling wanted popups would be a possibility in an up-to-date browser (version 129.0, literally updated minutes ago). Thanks for any advice.

For the last few days, every time i open Firefox, I am asked to sign in to my frequently used Applications (Facebook, Google, X, YouTube etc). As these are all two-factor processes this is becoming very wearisome.

I always ask to "trust" the browser and i have tried refreshing Firefox, but as soon as I close down Firexox and try to re-open it i get faced with the same issue every time.

Help- I really don't want to change browsers, but this is driving me nuts.

Thanks to anyone who can help.

Some sites stopped opening, although in other browsers, and through the phone everything opens up. I've tried reinstalling the browser, disabling extensions, resetting DNS. It didn't help. A list of sites I'm having trouble with: https://www.deepl.com/ https://enka.network/ https://7tv.app/ https://hsr.hakush.in/ and some other sites that I can't remember right now. In Chrome he working. Sites like youtube twitch and other poplar working too, idk why firefox have problem, maybe its new update?

Hello, please i want ask about saving multiple open tabs in Firefox, i tried classic bookmark manager and extensions but all of them saved only part of all tabs

Thank you very much

Basically I just bought a 4k monitor while also planning to use the old 1080p one. As it turns out the default size setting makes the fonts on the big screen too small, or the small screen too big.

In Windows this wouldn't be an issue since I can just use multi scale. Ubuntu has that too, but it weirdly implemented and causes the smaller screens to be kinda blurly. The accepted solution is to use Wayland but it causes everything to be unbearably slow to me so that's out.

Not expecting such an odd use-case to have an implemented solution but I'm eager to be surprised.

Hi - running Firefox on two machines, syncing across both, and all settings and add-ons are the same. On Win10 desktop, closing Firefox leaves all cookies and passwords intact for next session. On Win11 laptop, closing Firefox deletes all cookies, passwords, and signs me out from Mozilla. Have tried rename/replace of cookies.sqlite I stress, all settings are the same everywhere, and the same add-ons and extensions on both machines. Antivirus is Avast Premium Security, add-ons are: Adblock Adblocker Ultimate DuckDuckGo Privacy Essentials Ghostery Privacy Badger uBlock Origin Having to reload passwords and sign in to everything on each session on the laptop is driving me nuts.