Firefox Community Forum

Error code: SSL_ERROR_PROTOCOL_VERSION_ALERT

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

This website might not support the TLS 1.2 protocol, which is the minimum version supported by Firefox.

Despite having the tick in the "Open Tabs and Windows" box, the last 3 days they have not been opened. Instead I get a completely blank page, not even the Firefox home page.

Even the "pinned" tabs aren't opening.

In 20 years I've never had this happen before.

I accidentally blocked a web site that I need. I have followed all of the instructions to unblock (creating a master password, etc) but it does not work. I need to get this site unblocked as soon as possible.

Hallo. ich kann den Mailcheck nicht mehr nutzen. Immer wenn ich ihn instalieren möchte erscheint, kann nicht Installiert werden wahrscheinlich defekt. Was sol ich machen?

On my opening Firefox page there is a header " Your browser is being managed by your organisation". I am an individual and have no organisation. I am having problems with Ancestry which they have directed back to my browser. This is this last thing (I think) that I do not understand. Any ideas most welcome please.

I'm using Firefox in a kiosk-mode application, on a Raspberry Pi based system, started from a bash script like this:

# Clear history etc. to prevent problems if unit is not perfectly shut down rm -v -r /home/pi/.mozilla/firefox/*.default rm -v -r /home/pi/.mozilla/firefox/*.default-esr rm -v -r /home/pi/.cache/mozilla/firefox/*.default rm -v /home/pi/.mozilla/firefox/profiles.ini

sleep 2

/usr/bin/firefox-esr --kiosk -url http://127.0.0.1

However on booting I get a banner from Mozilla along the top of the screen saying: "Firefox automatically sends some data to Mozilla so that we can improve your experience [Choose what I share]"

This is not acceptable in kiosk mode, as it would give users access to the configuration as well as being a visual annoyance. How can we disable this?

Are the captions being generated in firefox. I've never had this happen before.The captions are unrelated with I'm doing and are very distracting . Please tell mr how to discontinue them. Thank You

I always shut down my PC (Windows 11) while Firefox is open, and it reopens automatically when I turn it back on. However, the settings and the layout are reset.

I tried closing the browser normally via the Close button, but the issue persists.

I tried killing the process via Task Manager, but the issue persists.

I'm not opted into Firefox Studies.

I use quite a few extensions and also Container Tabs. I tried disabling all extensions, but the issue persists.

I just can't disable Container Tabs to test because I would lose too many tabs. Could Container Tabs be the issue?

I found old posts about this from 2012 or so, but nothing for current version of Firefox I have been using Firefox for years. This has suddenly started happening on my laptop. Annoyingly it also displays the same configuration pop-up with various screens you have to go through, clicking Skip this step before you can start browsing. I reset the Home Page to my preference. But next time I start Firefox it reverts to the Welcome and forgets all settings.

I am using a Hammerspoon on MacOs to do my window management. This allows me to move windows around to different areas and monitors using my own hotkeys. For all other applications, this works perfectly. Windows move to the target area/screen instantly when I press a hotkey. However, Firefox always needs some "encouragement". On every key-press, it moves towards the desired location & size, but never gets there in one go.

After some googling, I recently found another question on this forum that seemed to fix the problem. It is this question: https://support.mozilla.org/en-US/questions/1438695

By setting `ui.prefersReducedMotion` to 1, Firefox stops its animation-stuff and does exactly what is expected when the windowmanager gives the window a series of `(x, y, w, h)` instructions. So, that seemed like the fix I needed.

But... I typically don't reboot my mac for weeks on end and I noticed that after "some time", Firefox reverts back to its old behaviour. I have not yet figured out if there is a minimum amount of time before this happens, or if it has something to do with locking/unlocking my mac. At the moment the only way to fix it again is to restart Firefox.

I know reducing animations in MacOS' accessibility-settings probably fixes it for good, but that is not what I want. That would remove _all_ animations from all of the apps and the OS. How can I help investigate this?

I updated my desktop browser today and now there is an expandable sidebar at the left margin of the window showing tool icons for Tabs from other devices, History and Customize sidebar. I can see how to remove tool icons and how to expand or collapse sidebar but can I remove the sidebar completely? Is this an option? I prefer the old look with the browser web page content extending all the way to the left of the screen, without the narrow vertical sidebar.

Just installed Firefox for macos Monterey.

On the "Home" tab in preferences, it lets me enter "https://www.bing.com" for the Firefox Homepage. Then for New Tab it lets me select "Firefox Homepage".

However when I open a new tab, I still get Firefox page with a Google search box.

What am I don't wrong? Thx

A sidebar has appeared out of nowhere. I removed all extension on that sidebar and it still doesn't go away. I already have a bookmark bar and extensions at the top bar. I don't want another sidebar at every firefox window. How do I remove the sidebar, please.

The bookmarks icons and fonts are too small for my older eyes on my new Ubuntu computer. They are bigger on my older Ubuntu computer. I have tried to find out how to enlarge them without sussex.

I am aware of the Zoom feature for a webpage itself, I am not asking about that. I simply want to have my bookmark toolbar FONTS and ICONS larger.

This has been frustrating. Perhaps including an EASY way to do this for future updates, or an app suggestion that would solve the problem. Thanks for your consideration and (hopefully) help.