I have a wildcard certificate and got it signed by AlphaSSL. I followed the steps from here: http://nginx.org/en/docs/http/configuring_https_servers.html#chains to set it up on my nginx server which is used as a reverse proxy for multiple web sites and applications.

At the moment it is only set up on my Joomla website - https://www.webbsc.at

It works fine on Windows IE 11 and Windows Chrome. It is failing on Windows Firefox, Mac OS X with any browser and Android Chrome. I didn't have the chance to try it out with other browsers / OS so far.

Firefox says that it cannot identify the issuer (sec_error_unknown_issuer) but I have added the intermediate certificate. Also Chrome in Windows can show me the correct certification hierarchy, while Firefox only shows my certificate.

What am I missing here?


Configurations for the certificate I've tried so far:

  • my-cert, intermediate
  • my-cert, intermediate, root
  • my-cert, root, intermediate

all three work in IE, Chrome in Windows, none work in any other browser

When I've tried a different intermediate certificate it didn't work in Windows anymore either, so it should be the correct intermediate one.

Once again - when I open the Firefox or Mac OS X details about the certificate I can't see the intermediate + root certificate in the hierarchy. In Windows I see them, as well as on the Websites for testing SSL (provided by the first answer)


As you can read in the comments of the answer, I had a wrong intermediate certificate which somehow worked better than other the other wrong certificate I tried.


It seems that there is something wrong with the intermediate certificate . If you verify your certificate using tools from SSLShopper or SSLLabs , both are returning errors in the certificate chain.

  • Could it be a problem how I've concatenated it, maybe a missing new line? Or is it rather a problem with the certificate as such? – peter Mar 19 '15 at 16:17
  • How many certificates have you concatenated? According to GlobalSign you need three: support.globalsign.com/customer/portal/articles/… . Also verify if the intermediate certificate is the right one: alphassl.com/support/install-root-certificate.html – hdanniel Mar 19 '15 at 17:00
  • I've updated my question with more information, which certificates I have, ... going to check out the links you've posted, thx – peter Mar 19 '15 at 17:07
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    I'm not sure about this one but your AlphaSSL certificate says "valid from August 2, 2011 to August 2, 2022" which according to the AlphaSSL site belongs to "SHA-256 Orders Prior to March 31, 2014". "SHA-256 - Orders March 31, 2014 and After" should say "Valid until: 20 February 2024" – hdanniel Mar 19 '15 at 17:11
  • aaaa damn - I read the year wrong, for some reason I thought it's 2015, sorry 'bout that - I'm checking now the latest one, hope this was the only mistake I made – peter Mar 19 '15 at 17:14

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