Firefox 社群討論區

My version is the most recent, 152.0.6.

After a few minutes, text searches in the address bar unpredictably stop working. This might happen right away, or it may take a while. The result is always Secure Connection Failed The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.

Here are the problems that I encounter literally every day: Randomly unable to access GMail: account selection entry screen does not respond, or drop-down account selection when logged on does not respond. Randomly unable to access URLs embedded in emails. Browser locks up unpredictably. Videos in Facebook randomly fail to render: the audio plays, but the bottom half of screen completely blanks. Randomly unable to access websites in general: "secure connection failed". Randomly refuses to search for terms entered in the address bar, with "secure connection failed". Widgets on web pages randomly fail to respond.

I'm using the VPN that comes with my AV package, and turning it off makes everything work again. However, I'm certainly not going to turn off part of my web protection (which I am paying for) in order to get Firefox to perform basic browser capabilities. TBH, all of this started when Firefox started aggressively promoting their own VPN, so it's quite tempting to put two and two together.

I would prefer not to resort to Edge or Chrome, but at this point I don't see an alternative as they do not have these problems and Firefox has basically become unusable.

July 13, 2026

In Windows 10, FIREFOX is preventing the proper operation of the Windows 10 feature called MOUSE KEYS when FIREFOX is operating. MOUSE KEYS is a very important capability to individuals with certain disabilities.

MOUSE KEYS enables the use of the numbered keys on the NUMERIC KEYPAD to be used to move the cursor around when the NUM LOCK key is turned ON, as a substitute for using a mouse. Does Mozilla have a way to prevent FIREFOX from defeating this MOUSE KEYS feature?

Google AI indicated that there is a solution specifically for FIREFOX. That capability is built into FIREFOX and begins by using "about:config" to reset a parameter named "permissions.default.shortcuts" from either "0" or "1" to "2". I successfully implemented the steps in this solution by changing that value from its default value of "0" in my computer system, to "2", but no change resulted. MOUSE KEYS continued to malfunction in the same way.

After exhaustive testing looking for a pattern, I finally found one. The malfunction appears to be the following: With the MOUSE KEYS feature activated in the WINDOWS 10 set up, and with NUM LOCK turned ON to assure that this function is ON, each of the numeric keys, 0 through 9 on the keypad, cycles through the different MOUSE KEYS functions of all ten of these keys, in ascending order by their number. For example, if you press key 7 for ten times in a row, it will cycle through each of the ten MOUSE KEYS functions associated with the keys 0-9 to occur, returning on the tenth press to the function that was executed the first time that key 7 was pressed, and so one endlessly through multiple cycles. And similarly for each of the other ten numbered keys.

A similar type of malfunction of MOUSE KEYS occurs with any BROWSER program that I have tried, including GOOGLE CHROME and BRAVE. I gather from GOOGLE AI that browser programs INTERCEPT the codes generated by the numeric keys on the numeric key pad and change those codes before sending the codes to the WINDOWS 10 operating system, and thus to MOUSE KEYS, for execution, causing this problem.

Is there a solution for FIREFOX what will restore the proper function of the MOUSE KEYS feature of Windows 10, when FIREFOX is being used? Thank you for any help that you can provide.

Hi,

After the last two updates, the **Pseudo-elements** tab in the Browser Console can no longer be closed once it has been opened, and vice versa.

Please see the video below demonstrating the issue:

https://www.awesomescreenshot.com/video/54512049?key=4422b692b5131ae71def568f54d6f82d

Thanks.

Or to open the profile selection sidebar?

I don't see it in about:keyboard but maybe there's something else somewhere.

If not, what's the quickest and easiest way to switch profiles?

Windows 11 expensive high performance tower PC. When I am closing Firefox I am warned that I am about to close 80+ tabs although. I actually had only 13 tab groups (closed) and one ordinary tab open (The New York Times) I close Firefox anyway and ALL the group tabs disappeared.

Sometimes, when I am warned that I am closing 80+ tabs, they luckily they haven't disappeared upon restarting Firefox. This happens often.

I know how to reconstruct my tab Groups proceeding from listing all tabs.

Sometimes the tab groups don't disappear. It makes no difference whether I start a Firefox session on my just rebooted PC (and run PC for a minutes only using Firefox) or not. When I recently closed Firefox I could see from task manager that there was minor activity showing in the Firefox app which surprised me. I hope you have an idea of what might be occurring. I'm not a novice, I purchased my first PC in 1989

Thank you, Anita

Moderator note: This question has been edited to fix the formatting.

Windows 11; Firefox 152.0.5 (64-bit)

Hello I seem to have lost the ability to choose whether my bookmarks toolbar displays icons and text or icons only. At present I have icons plus 4 letters of text fading out. I want to return to icons only. How do I do this? Regards

I recently made the switch to Firefox full time a few weeks ago, and in that time, I have been getting more and more annoying at how Firefox renders Youtube.com.

If I'm on my feed, and I click to watch a video, watch it and go back, I never know what I'm going to see when it goes back a page. Obviously it goes back to youtube.com, but I never know if it's going to load at the top of my feed, or about ten rows down. Even if I click a video in the very first row, and then go back a page, it may or may not load at the top of my feed. I could also actually click a video on the tenth row, and then when I go back, it might load at the top of my feed, though that is not as common, it has happened. It also sort of, kind of, reloads the page when it goes back, but never goes back to the point on my feed at the spot where the video I just watched is, as Chrome and Brave do.

This is not how Chrome or Brave do things, and yes, I know they use a different engine, and I'm sure that's the reason for this issue. Chrome or Brave, if I'm watching a video and click back to my feed, they are much better at loading what is in cache, even if I the video was on the 100th row. I can then manually refresh if I want to.

Cannot log on to synology when I have been logging on many times before now your browser says Unable to connect. I will need to change browsers if I do not get a response.

Why am I suddenly having to login to FF after every PC restart? This happens all the time now, but not on Android. Also, when I log back in I get duplicate emails with the same codes to confirm my details. What is going on?? I have not got FF set to delete data on exit.

I am using Firefox on Linux Ubuntu 26.04. I normally work with multiple tabs. Then I quit Firefox with all tabs open at the point of quitting. Some times on the rare occasion there can be a forced quit due to some issues. In my settings I have configured it not to open the previous tabs. In fact I want a blank page. But whenever I reopen Firefox, it opens those tabs and tries to reload which is annoying. Some of these pages take a long time to reload, and why would I want to look at tabs which I already have read. Or if it crashes due to some website on a tab why reopen something that crashed in the place ? Can you fix this. Thanks.

I am signed in to Mozilla account but the VPN plug in never gives me the option to turn it ON. I see the VPN plug in in the tool bar, every time I click on it, it tells me to sign in to my account even though I am already signed in. It never presents the option to turn "on" like I see in the FAQ. The "Turn on VPN" option never appears.

When I download with this browser, I cannot open the file and it states download has "failed". Any other browser I use allows me to open the file. I use Firefox most often because I like the way it performs, but the download issue causes me to look elsewhere for a viable browser. I cannot seem to find what is causing the download failure and am hoping you can offer a reason that will provide a fairly quick fix.

For some reason firefox uninstalled on my computer, I genuinely do not know why. When reinstalling it, I have an old save from my backup of that morning (I have it setup that way). However, I do not remember this password whatsoever and I am freaking out a little bit since I have information on there and I am just trying to get it restored onto my account.

Any help would be appreciated.