This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Kerberos authentication working for Chrome, Edge, Opera, and Brave, but not Firefox

  • 3 ردود
  • 1 has this problem
  • آخر ردّ كتبه Mike Kaply

bryan
bryan
more options

Firefox (129.0.2) displays "401 - Unauthorized: Access is denied due to invalid credentials" (see attached image)

I have tried various combinations of setting and not setting the following in Firefox:

  • network.negotiate-auth.trusted-uris
  • network.negotiate-auth.delegation-uris
  • network.auth.use-sspi

For the URI settings I have tried both .domainname.domainextension and https://servicename.domainname.domainextension

In Windows 10 Control Panel -> Internet Options, the site is in "Trusted sites" using a domain wildcard, and also "Local intranet" and both "Automatic logon" and "Enable Integrated Windows Authentication" are enabled. I suspect those setting aren't relevant since other browsers are authenticating without error or prompt, but calling this out to show that I've covered that base.

The web service is served by IIS 10.0 on Windows Server 2022 and the authentication provider list only includes Negotiate, but I don't believe this issue has anything to do with IIS or its configuration as, again, other browsers are authenticating without error or prompt.

Anything else to check?

Thank you for any guidance you can offer.

Firefox (129.0.2) displays "401 - Unauthorized: Access is denied due to invalid credentials" (see attached image) I have tried various combinations of setting and not setting the following in Firefox: * network.negotiate-auth.trusted-uris * network.negotiate-auth.delegation-uris * network.auth.use-sspi For the URI settings I have tried both .domainname.domainextension and https://servicename.domainname.domainextension In Windows 10 Control Panel -> Internet Options, the site is in "Trusted sites" using a domain wildcard, and also "Local intranet" and both "Automatic logon" and "Enable Integrated Windows Authentication" are enabled. I suspect those setting aren't relevant since other browsers are authenticating without error or prompt, but calling this out to show that I've covered that base. The web service is served by IIS 10.0 on Windows Server 2022 and the authentication provider list only includes Negotiate, but I don't believe this issue has anything to do with IIS or its configuration as, again, other browsers are authenticating without error or prompt. Anything else to check? Thank you for any guidance you can offer.
Attached screenshots

Modified by bryan

All Replies (3)

Mike Kaply
Mike Kaply
  • Moderator
more options

Here's some documentation on this:

https://htmlpreview.github.io/?https://github.com/mdn/archived-content/blob/main/files/en-us/mozilla/integrated_authentication/raw.html

that hopefully helps.

If that doesn't work, let me know. Might be easiest to open a bugzilla bug and get developers involved.

Helpful?

bryan
bryan صاحب السؤال
more options

Mike Kaply said
Here's some documentation on this: https://htmlpreview.github.io/?https://github.com/mdn/archived-content/blob/main/files/en-us/mozilla/integrated_authentication/raw.html that hopefully helps. If that doesn't work, let me know. Might be easiest to open a bugzilla bug and get developers involved.

unfortunately there wasn't any guidance in there that hasn't already been followed from other sources

Helpful?

Mike Kaply
Mike Kaply
  • Moderator
more options

I'm at a loss.

I think you might get some better help on this from our enterprise list.

https://groups.google.com/a/mozilla.org/g/enterprise

Most of the folks there are deploying Firefox an dealing with this stuff on a day to day basis.

If you don't get any responses there, we can open a bugzilla bug and see if we can get the networking team to take a look.

Helpful?

اطرح سؤالا

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.