Форум спільноти Firefox

I am running Firefox version 153.0.1 on a 64bit install of Windows 11.

A few days ago I had to factory reset my computer, including a clean Windows install. Since then, when attempting to access https://vodafone.cz/muj/prihlaseni, I get an Imperva Error 15 "Access Denied" error screen - screenshot attached here. Clicking the Imperva logo on the bottom of the error message leads to https://www.imperva.com/why-am-i-seeing-this-page/?src=23.

I was able to access the site in the past, most recently on July 8, 2026 - this would have been Firefox version 152.0.5.

This error persists in troubleshooting mode but not in private/anonymous (with or without extensions enabled), nor does it appear in Microsoft Edge or Firefox on Adroid.

Clearing cookies and cache did not help - in fact the error first showed up on a clean install of Firefox, when there weren't any cookies or cache stored yet. I've tried different DNS over HTTPS settings and listing the site as an exception in settings, but none of this made a difference. Enabling Firefox's built in VPN also made no difference, regardless of the selected location.

I found a recent post (https://support.mozilla.org/en-US/questions/1588627) describing a similar issue on a different website and tried the suggestion listed there to try a fresh profile - this seemed to work, but within a couple of minutes of browsing the error message returned. I've even reinstalled Firefox entirely, but this too did not help for long.

Interestingly enough, the error message lists a proxy IP address (not blacked out on the screenshot) despite the fact that I am not using a proxy.

The website provider's tech support claims this is an issue on the user side, not theirs - they have not been able to replicate the issue.

Is there anything I'm missing that would explain why this is happening?

Thanks!

I'm running Firefox 153.1 64-bit on Windows 11 Pro 25H2. I have a LOT of bookmarks. Possibly over 3,000. Somehow over time I've managed to create a LOT of bookmarks in the Other Bookmarks folder unintentionally. I need to move and merge those to the correct Bookmarks Menu and ideally eliminate any dupes. Everywhere I look for a process to accomplish this I seem to get a lot of "can't be done". Does anyone know how to do this? Thanks for any help.

The VIEW tab in my Firefox will/can read some links and articles to me. It is wonderful.Choosing 'READER VIEW' in the VIEW tab. But some it does not. I'm hoping some AI will have this feature.- speaking it to me. Thanks.

In trying to re-install Firefox, I got to where they sent a security code to bru..... This is my son who was else where and busy so the time limit hit and I was dropped. Now how do I restart?

Upgrading from System 7 PC to windows 11 PC. On new computer (windows 11) downloaded firefox, logged in; Bookmarks transfered, but some sites (AOL.com, for example) auto filling very old password. Old computer auto fills correct password. On new computer, password manager shows correct password. Why is it not working?

Firefox 153.0.1 (64-bit), Windows 11. Immediately after this update, Yahoo Mail began showing a persistent "No internet connection" banner over the search field. Mail loads and receives normally — new messages arrive in real time while the banner is displayed — so the connection is fine. The banner covers the search field, so I cannot search my mail.

Tried without success: cleared cookies and site data for yahoo.com; unregistered the mail.yahoo.com service worker via about:serviceworkers; toggled Enhanced Tracking Protection off and on for the site; removed all extensions; restarted Windows several times.

Yahoo Mail works correctly in Vivaldi on the same machine, same network, same account. It was not happening on the previous Firefox version and nothing else on the machine changed.

Has anyone else seen this since 153.0.1?

Shortcut for following: Fidelity investments = Fidelity.com Google inbox = mail.google.com/inbox Facebook = Facebook.com

As the title says, with both with https and http firefox displays this warning:

https://i.imgur.com/MQLsaCk.png

But no way to bypass it, trying to login to my ubiquiti edgerouter at http://192.168.1.1 or https://192.168.1.1

What can i do?

Hello! Since the latest update to Firefox (153, I believe) my Firefox has not worked. It starts up perfectly fine, but quickly freezes, becomes non-responsive, and needs to be closed. No matter how many times I attempt to open it, the same thing occurs. There’s been been occasions where it hasn’t frozen immediately so I have been able to turn off hardware acceleration as well as remove my theme and disable all my add-ons/extensions, but this has done nothing. Creating a new profile does not help, nor does trying Safe Mode: the same thing happens no matter what. I tried to reinstall the update, but this also did nothing. I haven’t yet tried to uninstall & reinstall or do a Firefox refresh as those are my last resorts and I won’t do them unless I’m sure they’ll make a difference. I haven’t downloaded any new extensions recently, and this only started happening after the most recent update. I’m not sure what else I can try at this point, and am very frustrated.

I periodically need to access a website with an expired or self-signed certificate. I understand the risks, but the browser won't let me. I've searched both the regular settings and about:config, but I can't find an option to restore the button to ignore the warning. How can I ignore the SEC_ERROR_BAD_SIGNATURE notification and proceed to the website I need?