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Intermediate certification authorities chain fails

  • 4 replies
  • 16 have this problem
  • Last reply by tosiara

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After importing RootCA FireFox still can not load a web page signed by intermediate certification authorities.

Root CA certificate:

Web Site:

Certificate Chain should look like:



I have tried IE and Opera and both working fine and detecting certificate chain. Only need to import RootCA cert to establish trust

Why FireFox does not work as expected?

All Replies (4)

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A web server needs to send the full chain of intermediate certificates.
Importing the root certificate is not enough.
If the server doesn't send the certificate then you need to install (import) that intermediate certificate as well.

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So how then IE and Opera receive full certificate chain? And why FireFox does not receive it?

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I think I got why IE and Opera works fine

Inside IssuingCA certificate there is a link to upper CA certificate:

[Authority Information Access] OCSP: URI: CA Issuers: URI:

IE and Opera retrieve PolicyCA certificate and then the same way retrieve RootCA certificate. That how they verify trust

The question remains: why FireFox can't do the same?

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Still same in FF5