Firefox Community Forum

This morning I was able to access the website of: https://www.alexander-wallasch.de/ Now, ONE HOUR later I no longer can. You are doing this not for the first time, it happens regularly with websites that do not conform to what you would consider Mainstream! THis is not the sites fault. YOU ARE CENSORING ON PURPOSE: IF YOU WOULD NOT; YOU COULD SIMPLY ADD A BUTTON for every site THAT ALLOWS USERS TO OVERRIDE YOUR OPINIONS: WHY IS THAT NOT HAPPENBING? Why can the user not override your decision? Has anyone ever asked you for "help" like that?

Continually, how to stop bonusnun.com from appearing in firefox. I have malware anti malware. Cannot stop this bonusnun

Hi, My Mum who is tech illiterate has recent encountered a problem while browsing-

She is unable https://direct.asda.com/george/clothing/10,default,sc.html

and only this site, she can do so in private mode and on other browsers, I have tried disabling her 2 extentions, I have cleared her cookies, cache and browsing history for Asda Direct but it still comes up blank. She does not use a VPN, she is in the UK.

The only thing I could suspect is if Firefox's VPN is somehow activating just for that one site but I can't see it being on, I only say this because I have to turn off my VPN on my own device to access this site.

Any help?

blocking pages https://www.ui-deref.com/r/?to=https://data.notification-htp.dish.com/ee/v1/click%3Fparams%3Dv1.10COjSKNA5PrObazTisehHaAu92BIO9JYdMGyGMpqr4WinxM1dh598psfuBG2Wz_fojlM5iQAf-FP0Yp880Ggw3gKu5pzo7jx1Ppx5OO1gwVBBlGYnT9S59VME_SDZ4tOwNJLJfL_gkeymBeqv6rS2DGd2cIo99fV_u6h4lDyrz0Q9mGuznkCNdyWj4qmM1P_6d6h4x64pvyOqe0xdgKZ7GjBSN_7DQX93YU52up00cKGoGAqn1waXAs2i2BHrkDY7EBo0thuq9vVSSsoX9hCDLXXj-eloVqMfSEN1Z-WS44m7UglPbfk3MNhdAWomTGoa6Rfs0DfnCIh_yZ3Sl6JJXpozo4O_o%26pid%3Dv1.sBhGBFuph3l-jqvOcGhIFPgusFRIbkBGNwIoYDMnY3oBzt0CKL1I9dinuyDWSCWANt0cTTruwBgOcAUh29cgLEizf5Jf%26tuid%3D6a565e3493a2c601fb9af049%26configId%3D8bdd7ab2-db13-479e-981f-ae95ef3a097e&tt1=gkXntVe5gsurV2prJkSNY57hq7GBiBnCWyIYHRXeOSj2ymRqdjtlag9giqYJriRe1azJHHJKR9Q9spkamVkkAE22WHUzhjffZPft1uqF8zS

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!

As of about last Thursday, I have been unable to access my Isomedia.com SpamTitan01 account. I usually have a trove of spam messages, which I look at and delete, except for the one or two that are real emails. For the last 5 days My Titan vault is empty, though it is trying to retrieve data. My address is [redacted] @pioneernet.net Could it be that a Firefox update is preventing me from access?

Nancy Moore

I am using Firefox to conduct Securus Jpay video connect visits and I have been unable to join a scheduled session due to what I believe is failure of the downloaded VRE client to load. When I do a precall test, everything, including the VRE client works correctly and I'm told that I will be able to run a session successfully. However, just as the video connect visit is about to begin, I am told to download the VRE client to continue. I have don't this multiple times, deleting each prior download and re-doing the download +installation. It's been very frustrating and I've tried everything. Up until about 2 weeks ago, everything was working smoothly. I'm stumped. Please help. thank you.

Lynn Kerwin

Ich habe einen DEepl Pro Account. Mein Standardbrowser ist Firefox. Ich melde mich im Firefox-Browser für die Desktop-App an. Es erscheint der Hinweis: "Du hast dich erfolgreich angemeldet und wirst gleich zur App weitergeleitet." Die Weiterleitung scheint von Firefox blockiert zu werden (wozu eigentlich???). In den Einstellungen ist meine Präferenz für Deepl.com korrekt aktiviert. Ich möchte Firefox als Standardbrowser nicht aufgeben, doch das scheint die einzige bekannte Lösung zu sein, die sofort hilft. Ich nutze an einem PC mit Windows 11.

Meine Frage: Wo kommt dieser Bug her und wie muss ich Firefox genau einstellen, damit solche Blockaden nicht passieren?

(Ich beobachte solche dummen, unerwünschten Blockaden in Firefox leider häufig, nehme dann manchmal den Link und öffne ihn einfach in Chrome, was immer problemlos möglich ist. Ich möchte nicht die Funktionalität des Browsers mit endlos vielen "Sicherheitseinstellungen" erwürgen.)

I use a site nextdoor.com and get email notifications. On opening the email, I see the option to view the comment, on clicking on view, this is what happens: . "The site ahead may contain harmful programs

Firefox blocked this page because it might try to trick you into installing programs that harm your browsing experience (for example, by changing your homepage or showing extra ads on sites you visit).

Advisory provided by Google Safe Browsing." And I can go not further. Why is this happening? How do I dump it and proceed with using nextdoor as normal. gargle is a blight on all users, and I want nothing to do with them. Is it time for me to change browsers?

Our team has already tried to fix the issue for a week now and none of the approaches seem to fix the issue. Does the Firefox dev department have any hints or clues for us?

Short description: Firefox network.lna.blocking blocks same-origin/loopback requests when the page is controlled by a Service Worker

Symptom: Login via OIDC fails in Firefox (the backend call after the IdP redirect is blocked). The error disappears if either network.lna.blocking=false is set or the Service Worker is disabled.

Environment: - Frontend (react) and backend run on the same machine (loopback/localhost)—no cross-network scenario. - Firefox with active network.lna.blocking (experimental Local Network Access feature, Chromium’s equivalent is Private Network Access).

Root Cause (Analysis): 1. apps/react/sw.js registers a global fetch listener via Workbox and calls workbox.core.clientsClaim(). This causes every open page to be immediately controlled by the Service Worker. 2. registerServiceWorker() is called unconditionally on every app start, regardless of authentication state—even on the login/OIDC page. 3. The app uses hash-routing (URL fragments like “#/oidc”); the login page and the rest of the app share the same document URL, so you can’t restrict the SW scope to “everything except login.” 4. Once a page is Service-Worker-controlled, every fetch—including requests not explicitly handled by Workbox routes—first goes through the SW’s fetch event (default behavior when any fetch listener is registered) before proceeding to the network if it isn’t intercepted. 5. Hypothesis: Firefox’s LNA implementation doesn’t correctly inherit the address-space classification (loopback/private/public) for SW-forwarded requests across the controlling client. A direct document fetch (loopback→loopback) is allowed, but an identical target fetch routed through the SW is blocked.

Reproduction (minimal): 1. Use Firefox with network.lna.blocking=true (the default in affected versions). 2. Load a page that registers a Service Worker with a fetch-event listener (e.g. via Workbox precacheAndRoute + clientsClaim()). 3. Ensure both the page and the target resource are served from localhost/loopback. 4. From the SW-controlled page, call fetch() against the loopback target resource → the request is blocked. 5. By comparison, the same fetch from a non-SW-controlled page succeeds. 6. Setting network.lna.blocking=false also allows the fetch to succeed under SW control.

Excluded Causes: - Different address spaces for frontend/backend (both are on the same loopback machine)—ruled out. - Misclassification due to redirect_uri or cross-origin navigation—the OIDC redirect is a top-level navigation (unaffected); only the subsequent backend call (token exchange/session validation in SsoLogin.tsx → ssoLoginSubmit) fails.

I turn that off and still no Twitter and your system turns it back on again all by itself, your settings are doing what they want to do, not what I SAY to do. Now, I cannot get into Twitter.

I cant use firefox to connect to mail.com. I can connect by other browsers just not with firefox. Server Not Found

Firefox can’t connect to the server at 6938e629511d9131a58e28150289aa0a.safeframe.googlesyndication.com.

Heyo! So, I've had this ongoing issue with Firefox for quite some time around trying to access the Newgrounds website, but failing to do so. I have tried several things such as disabling the enhanced tracking setting, disabling DNS over HTTPS, forcing cookies and third-party popups to be allowed but that does not work what so ever and disabling enhanced tracking is greyed out so it's not even clickable to toggle off.

One thing that did work was to use the built-in VPN, but I really don't want to constantly have to use a VPN to browse one singular site every time I want to access it. So now for the question. Has anyone else experienced this? And if you have, how did you solve it if at all?

I'm unable to open my mail.att.net on my HP Windows 11 computer. The screen shifts to Yahoo mail now. For a time I could click on the "small Person" symbol to log in. That now longer works. The session times out without connecting. I've cleaned and deleted cookies and browsing history. The same login problem now also occurs on my Microsoft Edge browser.

it is obvious your system has changed: I have windows 11....the help I see is for windows 10

where are the current updates?

Contributor note: See also /questions/1593092.