I-Firefox Community Forum

Firefox updated on my macbook pro running Sequoia 15.5 but failed to restore my previously open windows. The option to restore previous session was missing. How can I get my previously open windows back, bearing in mind I'm not not a computer nerd? Thank you, Edouard.

I cannot reach tennisonline.me website , I get error message 'Server not found' Can you advise / help me ? Thank you

On the home screen all the boxes are greyed out. I guess they are meant to be links to videos and information, weather etc etc? I am on Windows 11, my version is up to date (151.0.3 (64-bit).

I have cleared cache etc and troubleshooter to reset Firefox but still no good. I have recently gone back to FF from Chrome as Chrome has so many issues.

Why is that ?

Press ( Ctrl+H ) on keyboard ...

Web browser based on Firefox Browser...

In addition to display webpage names ...

Why is the URL still be displayed ? rrr1.jpg

.

Current Setup: OS: Windows 11 Home (10.0.26200) Firefox Version: 151.0.2 (Build ID: 20260525130955)

Issue:

• Firefox suddenly is unable to connect to any wesbite
• All attempts to browse result in the "Secure Connection Failed" screen
• All other browsers function fine with no network connectivity issues

Exact Display Text:

Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

Attempted Fixes / Things Confirmed:

• Everything mentioned in: Firefox can't load websites but other browsers can

• Relevant about:config values:

* * security.enterprise_roots.enabled -> True

• * security.ssl.enable_ocsp_must_staple -> True
• * security.ssl.enable_ocsp_stapling -> True
• * security.tls.version.max -> 4
• * security.tls.version.min -> 3

• System locale and timezone are correct
• DNS over HTTPS is set to OFF
• HTTPS-Only Mode is set to Don't enable HTTPS-Only Mode
• Restarting in Troubleshooting Mode
• Disabling the Anti-Virus (including the device Firewall)
• Disabling any VPNs or network proxies
• Clearing cache and browsing history
• Clearing certificates from the Certificate Manager in Settings
• Attempting connection with a newly created profile
• Clearing the cert9.db file for Firefox to reset certificate information
• Refreshing Firefox (resetting it completely)
• Uninstalling and reinstalling Firefox (after clearing all Mozilla related %appdata% folders)

Observations

• When trying to mess with the device timezone and see if changing it back to the correct one would "reset" something, after a few attempts of starting Firefox in the wrong timezone and then restarting it after changing to the correct one, for a single session, I was able to browse normally again. I closed Firefox to see if the problem was fixed but it went back to the "Secure Connection Failed" page. Was unable to reproduce the same behavior.

• Tried installing a portable version of Firefox (151.0.3) from Firefox Portable .

After installation, the first session works perfectly fine but after I close the session and restart Firefox, it gives the same "Secure Connection Failed" message.

• * Reinstalling the portable version in the folder, gives the error from the get-go, not even the initial post-installation session works but installing in a different folder works fine for the first session but all subsequent restarts (sessions) of the browser give the same error.

I cannot use Firefox without it blowing up my memory to 86GB used in Activity Monitor. I've cleared my cache, closed all my tabs and bookmarked them. I have a Macbook Air M1 2020. I've tried restarting and am definitely using the current version of Firefox. I also updated to the latest OS Tahoe 26.5 to see if that helped. What should I do next please?!

So for three days now, my firefox constantly crashes. I would be reading a story online or watching a video on Youtube and then it will suddenly freeze. In videos, it'll still play the sound but the screen will freeze. I can't pause or stop it. Then either Firefox crashes and closes or I have to close it for it to stop. Sometimes, when I try opening it again, it still won't open. I used to have 50 tabs open and never ad this issue. After this, I closed all the open tabs, even deactivated a bunch of extensions, run malware detection, and still the issue continues. I don't know what the problem is. I even followed instructions and deactivated hardware acceleration options in Performance. And I have all AI options turned off too. The app also recently was updated.

crash report bp-e455fd8b-e30b-4cdc-811a-346ac0260607

What to use to tool for the 3xtentions and hoped to make my searches more valuable to me and 4ich with better info . Not sure where this info is after adding the extentions 5my firefox or how it works . Please help me understand?

I wanted to use the Firefox browser VPN to check what the price of a certain Patreon subscription is in another country, but when the VPN is on, the website still correctly identifies my current location and shows me the price in my current country's currency. Is this a limitation of the VPN, or did I not set it up correctly?

https://areena.yle.fi/tv https://areena.yle.fi/1-71170823

Pages not starting to show. Page itself working ok. in Crome works 100% Note: Funny thing is that many of the videos work ok, but some not ??

I use eBird extensively. When I try to play the audio (with sonograms), I get a message that says "We are still processing this file. Try again later". These files perform well on my Android phone, so I know it it is not eBird's glitch. I am confused about the setting options on Firefox that I need to set. These files are usually .wav format. I have tried to open a ticket with eBird, but have not had a response. Can you guide me? Thanks.

Non of the torproject.org site load on firefox they timeout. How do I access the torproject.org domains?

I've been a loyal Firefox user since version 2.0. but to this day you guys have not made it easier for users to restore Firefox profiles. We in 2026 should be able to do the following directly from the user interface of Firefox. honestly its really taken me a long time to voice this opinion but it makes the app a tad less user friendly. i mean its easier to import from another browser but you have to pull out and search all sorts of folders to import from an old Firefox installation or a windows refresh (windows.old). Please, please implement this ASAP. we users have waited too long.

1. display a list of profiles (even from windows.old after a windows refresh) 2. automatically import that information 3. append existing bookmarks from the bookmarks backup if i choose to. 4. be able to browse the bookmarks and show the most recently used ones 5. be able to even reinstall the existing plugins (this one is minor)

the image attached is exactly showing what happens after a windows refresh. this feature is also great for administrators.

Regards, Shomari Ryan

Malwarebytes is picking up and blocking an outbound connection request from Firefox - www.highperformance.com. Anyone else experiencing this?