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https://www.fbdelegatedcredentials.com Warning: Potential Security Risk Ahead

  • 9 replies
  • 1 has this problem
  • 7 views
  • Last reply by Mace2

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When I go to the web site Warning: https://www.fbdelegatedcredentials.com/ from my public IP address of 198.251.56.153 I get a message warning: potential security risk ahead. error:code SS:_error_bad_cert_domain. the site is a valid delegated credentials site.

Can anyone tell me why all of my Firefox Apps give this error?

When I go to the web site Warning: https://www.fbdelegatedcredentials.com/ from my public IP address of 198.251.56.153 I get a message warning: potential security risk ahead. error:code SS:_error_bad_cert_domain. the site is a valid delegated credentials site. Can anyone tell me why all of my Firefox Apps give this error?
Attached screenshots

Chosen solution

I think this site is faulty. Several networks identify this as not valid cert.

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All Replies (9)

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You can see in the screenshot that the certificate is issued for fb.mvfst.net and isn't valid for fbdelegatedcredentials.com.

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Hello Mace2,

Would you please try this :

Type in the address bar about:config and press Enter. (promise to be careful, if asked)

Type in the search bar and look for the preference :

security.tls.enable_delegated_credentials

And make sure that its value is set to true

If you had to change the value, then close and restart Firefox.

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I am using DOH and I am unable to get access to the site. I have set security.tls.enable_delegated_credentials to true and restarted but even if I did not I expect the site to be accessed.

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Mace2 said

I am using DOH and I am unable to get access to the site. I have set security.tls.enable_delegated_credentials to true and restarted but even if I did not I expect the site to be accessed.

Bummer !

I just tried it, and after changing the value to true, I now get a blank page when I try to access fbdelegatedcredentials.com.

Just now I found this (scroll down to the comments at the bottom of the page):

https://www.thesslstore.com/blog/delegated-credentials-facebook-mozilla-cloudflares-new-tls-protocol-explained/

I don't know if this applies here though, but maybe worth a try (waiting, that is)  ?

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Chosen Solution

I think this site is faulty. Several networks identify this as not valid cert.

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Mace2 said

I think this site is faulty. Several networks identify this as not valid cert.

If you have the value of that preference still set to "true"; would you try again please (if you haven't already, of course) ?

Unfortunately I can't try again, as I immediately after trying the first time, reset the value to "false".

It took that other user about 25 hours for it to work .....

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McCoy said

I just tried it, and after changing the value to true, I now get a blank page when I try to access fbdelegatedcredentials.com.

My mistake : the reason I got a blank page is the fact that I had turned off "Enhanced Tracking Protection" for that site, to see what would happen.

I turned it back on and got the warning (same thing using Edge).

Changed the value of that preference to "true" again; now I got the warning with the "Advanced" button - clicked "Accept the Risk and Continue": blank page ..... :(

I'll try again about 25 hours from now.



I've tried other test sites ( with the value of the preference set to "true"), but none of them did what we expect them to do.

Then I realized that this will currently only work in Firefox Nightly or Beta:

https://dc.crypto.mozilla.org

Modified by McCoy

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This site does work "https://www.fbdelegatedcredentials.com/" run on firefox 70.01

the results are shown with security.tls.enable_delegated_credentials set true