Φόρουμ κοινότητας «Firefox»

I keep trying to enter a shopping website I have used before in the past and keep getting the following: We block the use of VPNs and proxies to combat fraud We want you to have the best experience shopping with us! To continue, please disable your VPN or proxy.

Thank you for your patience! Your business is very important to us!

Good Morning, I have been trying to access Whatsapp web through the Mozilla browser but i have been unable now for the last four weeks. When i use other browsers then i am able to access the internet. Thank you.

Regards, Gitonga

I am trying to use a link provided by my apartment property manager. It is https://hermitagehills.loftliving.com/login When I use the link, or even type the website, on my desktop computer, using Windows 11, I cannot access the website. However, if I use any other device the website address works fine. I looked to see if I have the website blocked, but cannot find where to do that in Firefox. I know I have not blocked this website address. Can you help give me some suggestions? Thank you.

Why am I getting error messages on conservative sites. I am being denied my right to get all information right and left. Your using stupid excuses on the error messages to bar me from seeing the information. I have been on mozilla for many years and this is the first time I have had a real problem with it. The Trump report site will not let me read any content on without an error message popping up. Never had the problem a few months ago. No security problem then. Should not be a problem now unless your keeping from seeing conservative content. Let me see the content I want to see. Not what you say is a security problem.

Mozilla Corporation is sending me a box message from Nsv353A.tmp published by Mozilla Corporation teeling me to sign in to Amazon What is this?

And how do I fix this?

Hello Mozilla community

I’m troubleshooting a Kerberos/SPNEGO proxy auth issue and need help understanding whether this is a Firefox bug or a misconfiguration on our side.

Environment :

Client OS: Ubuntu 24.04 (GNOME session)

Firefox: 144.0

Other clients on same host: curl (works) and Chrome/Chromium (works)

Proxy (on-prem): swg.test.local:8080 (HTTP proxy performing Negotiate/Kerberos authentication)

AD / Kerberos realm: TEST.LOCAL (users), service SPN: HTTP/swg.test.local registered in AD

Domain trust: one-way trust exists between test.local and test.intra (contextual; but current test is within test.local)

Symptom :

curl --proxy http://swg.test.local:8080 --proxy-negotiate -u : http://example.com -> negotiates and sends Proxy-Authorization: Negotiate ... and request succeeds.

Chrome also performs Negotiate and the request succeeds.

Firefox never sends Proxy-Authorization: Negotiate and the proxy returns 407 Proxy Authentication Required. No prompt for credentials; negotiation does not start.

What I already validated

Kerberos TGT is present in user cache:

kinit user@test.local klist

TGT is visible and valid.

curl and Chrome negotiate successfully from the same host (so SPN, AD, keytab, realm mapping are working in general).

Firefox launched from terminal (so it inherits KRB5CCNAME) still does not negotiate.

I enabled KRB5_TRACE and launched Firefox; trace file stays empty (suggesting Firefox did not call into GSSAPI for this request).

Network capture shows proxy challenge Proxy-Authenticate: Negotiate and no corresponding Proxy-Authorization header from Firefox.

Firefox prefs checked / set (About:config values I validated/changed)

network.negotiate-auth.trusted-uris = swg.test.local,.test.local → Ensures Firefox will send Kerberos tokens to that host/domain.

network.negotiate-auth.delegation-uris = .test.local (optional)

network.auth.use-sspi = false (Linux)

network.negotiate-auth.allow-non-fqdn = false

network.automatic-ntlm-auth.trusted-uris left blank or set to .test.local

Despite network.negotiate-auth.trusted-uris containing the exact FQDN and domain, Firefox still does not attempt negotiation.

Diagnostics already captured

tcpdump pcap covering UDP/TCP 88 and proxy port 8080 (shows proxy 407 and absence of Proxy-Authorization from Firefox)

KRB5_TRACE=/tmp/krb5_trace.log for Firefox launch (no GSS calls logged)

Reproduced curl/Chrome flows that do include Proxy-Authorization: Negotiate ...

Hypothesis

Firefox is refusing to attempt Negotiate at all — likely due to either:

a preference that’s still missing or misinterpreted (trusted-uris format, wildcard/domain handling), or

a desktop-launch / environment isolation problem (GUI-launched Firefox not seeing Kerberos credentials or environment), or

a bug/regression in Firefox’s GSSAPI/SPNEGO integration on Linux (e.g., refusing to use a credentials cache inherited from the shell, or ignoring network.negotiate-auth.trusted-uris for proxy authorization specifically).

What I need from the community

Has anyone seen Firefox on Linux behave this way (curl/Chrome work, Firefox never starts Negotiate) with an on-prem proxy using Proxy-Authenticate: Negotiate?

Any additional about:config prefs or hidden flags that affect proxy SPNEGO (not site SPNEGO) that I should check? I already set network.negotiate-auth.trusted-uris.

Any differences in behavior between Firefox launched from GUI vs. launched from terminal that might cause the client not to use the Kerberos ticket cache — and reliable steps to reproduce/diagnose?

If you have a small reproducible test case or a recommended debug build/flags to capture verbose Firefox GSSAPI logs (beyond KRB5_TRACE) please share them.

If this is a known bug/regression, pointer to the bugtracker entry would be appreciated.

Thanks in advance

Bonjour, Depuis deux jours, je ne peux plus me connecter à ma banque, alors que tout fonctionnait très bien auparavant. Pouvez-vous m'en expliquer la raison et me dire ce que je dois faire. Cordialement

Bonjour en voulant aller sur un site connu et auxquels je vais j'ai eut ce message je n'ai rien modifié sur mon ordi d’où cela viens t-il et surtout comment y remédier. Merci "Pourquoi ce blocage ? Quelque chose dans le comportement du navigateur nous a intrigué.

Diverses possibilités:

   vous surfez et cliquez à une vitesse surhumaine
   quelque chose bloque le fonctionnement de javascript sur votre ordinateur
   un robot est sur le même réseau  que vous

Des difficultés pour accéder au site ?"

Greetings--

Every time I try to log in to a one of my websites I need, I get the below screen visual. "Callback" in the tab area, "mypti.com" with a lot of numbers behind it in the address bar, and a totally blank screen - nothing else. Also, when I try to log back into the website I am unable to do so at all unless I clear my data and cookies from my browser cache.

Can you help me figure out why? This does not happen on any other webpage/website other then this one. Any suggestions, advice, or recommendations?

I am using Windows 10 Home Pro, and as far as I can see, my Firewall does not appear to be blocking anything as far as I can tell......and I am set up to allow pop ups on visited websites.

I look forward to hearing from you.

Thank you.

Hi Folks, Recently I have been having an issue with accessing a particular website which is asus.com and the nature of the issue is as follows. Every time I attempt to login I receive the following error message.

The browser could not find the host server for the provided address.

   "Check the address for typing errors such as ww.example.com instead of www.example.com.
   If you are unable to load any pages, check your device’s data or Wi-Fi connection."

It should be noted that this is the only website that I am having this issue any and all assistance in resolving this extremely annoying issue will be greatly appreciated

I have pop up blockers set to allow pop up blockers, but ev en though they are turned on. Firefox will not allow pop up windows in the learning management software (D2L brightspace) used at my university.

https://www.anthropiccopyrightsettlement.com/

Here is the site I desperately need to click around on. I can't access more than the homepage via Firefox (laptop), Safari (my laptop and iPhone) or Microsoft Edge (my husband's laptop). For the links on the page, I get an error message every time. And I have disarmed as many cautionary protections as possible. Yet other people seem to be able to use the site like a roller rink.

Ideas?

Thanks.

I am now receiving this notice for more and more commonly accessed websites. I get the message if I have https only selected or not selected. Currently receiving for Lowes, Home Depot, American Airlines and more. I can go to a Firefox 135.0.1 browser on a separate desktop accessing the internet through the same router and do not have issues. I suspect I have been upgraded by Mozilla into a less functional browser version for whatever reason that Mozilla does this.

Sample Messages:

American Airlines Access Denied You don't have permission to access "http://www.aa.com/" on this server.

Reference #18.ea382f17.1754673395.2abc2b02

https://errors.edgesuite.net/18.ea382f17.1754673395.2abc2b02

Lowes Access Denied You don't have permission to access "http://www.lowes.com/search?" on this server.

Reference #18.89f8cd17.1754677280.265017bc

https://errors.edgesuite.net/18.89f8cd17.1754677280.265017bc