Firefox 社群討論區

I cannot get into my online accounts, as I have always done for years. After I select the site, the screen looks like it is working, but then a new empty window pops up: the tab says "citi 400 Bad Request" At the top of the empty screen it says: Bad Request. Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

Firefox updated its version on my iMac desktop two days ago and all my bookmarks are gone. There's a message at the top that says: "For quick access, place your bookmarks here on the bookmarks toolbar. Manage bookmarks..."

All my bookmarks are gone as if they were never there. I have a My Passport Backup hard-drive but I don't know where I can find them and restore them.

Hello community,

I've been moved to MacOS at work and since then, Firefox will not always restore my pinned sites when I start it the next day.

Here is what I do:

1. Right click a tab, select "Pin Tab"
2. Go about my day
3. At the end of the day, I close Firefox by using command Q and shutdown my Mac
4. The next day, I start Firefox and most of the time, my pins are gone

I did not have this issue on Windows Firefox. I am using MacOS 26.5.2 and Firefox 152.0.4 Firefox says "Your browser is being managed by your organization" in settings. It is a link that can be clicked and the only active policy showing there is "DisableAppUpdate" which I assume is because we have our own tool to manage software updates.

Any idea what could cause my pinned tabs to disappear? I did not really customize the settings so far, I do NOT clear browsing data when exiting FF and the startup option "Open previous windows and tabs" is NOT selected. I have Ecosia and 1Password as plugins.

Any help appreciated, thank you.

When I login to Google, I'm usually asked to do more than 1 catcha. Sometimes, they continue until I can't do any more and use Google Chrome. I have poor eyesight, and this is getting very annoying.

My javascript cannot detect the difference beween closing a new preferences tab and a new non domain tab. I believe this is for security reasons. This leads to one of my custom messages popping up when closing a non domain tab, which is not standard behavour on other websites on FireFox. If the user does or does not follow the popup instructions everything works fine. My question is: does this disqualify my website from being posted to the internet for FireFox browsing, or is it tolerable to users and to Mozilla? I have intentionally left out of this post technical information about my javascript. Believe me, I have tried countless ways to code my way out of this situation but due to Firefox's strong security measures, it is impossible. I should mention that perhaps if my script was an addon I would have accesss to the TAbs API which might offer a solution. The purpose of the script is to update the website to changes to the default Browser Zoom Level as found in the prefererence settings. Does anyone know if this purpose is compatible with FireFox Addon developement?Thanks so much for directing me to informed assistance. I hope the post is not "TMI"!!

Ever since the 152 update, every time I go to a Google website only, I am prompted to give Firefox location permission in system settings. They're definitely already turned on. It's so incredibly annoying I had to switch to Safari.

macOS Tahoe, Firefox 152.0.3 macOS settings include "Appearance - Auto"; i.e. system switches from light to dark at sunset. While the "top area" (tabs, address bar, bookmarks bar) of Firefox follows this - some of the pages themselves do NOT???

I found this website which was at top of the search results. I tried to follow it, but it seems to be badly outdated in certain key respects: esp wrt a setting called "ui.systemUsesDarkTheme" in about:config. I set this to "True", but may have screwed this up!! First question: Should I "reset" this somehow?

Finally: To get at the primary question, there are two "sub-questions" that may explain my confusion more clearly:

1. Is there no ***simple way*** to get Firefox & webpages I view to follow macOS Light/Dark appearance?? What are the CORRECT steps?

2. Do individual webpages have the ability to "decide for themselves" whether or not they will adhere to the system light/dark settings. This may well be an officially "stupid question", but while "most" webpages remain "Light" (including this Support page), a few pages appear dark.

Thanks, ~S

i have a domain that ( i bought ) i connected to my printify sellers page and this message came up Firefox Can’t Open This Page

To protect your security, chiradio.printify.me will not allow Firefox to display the page if another site has embedded it. To see this page, you need to open it in a new window. What can you do about it?

To protect your security, chiradio.printify.me will not allow Firefox to display the page if another site has embedded it. To see this page, you need to open it in a new window.