I have 2 computers on a router. For the same website 1 computer works ok. For that same website the other computer comes up with (error code: sec_error_unknown_issuer) Both computers using firefox 3.6.12.
Both computers are using Windows XP SP3 operating systems.
All Replies (3)
Can you give a link to that website ?
You can check if that server sends all certificates:
If a server sends an intermediate certificate then Firefox stores that certificate for future use in the Certificate Manager. So it is possible that you have visited a website, that sends a needed intermediate certificate, before on one computer, but not on the other computer.
The website I'm having trouble with is www.winterthur.org. After I get on the website I put the cursor on "What to see" and then I click on "Yuletide". Then I click on "Purchase tickets here" which produces a URL of http://secure.winterthur.org/ecommerce/itemList.aspx?node_id=55247 which comes up with the error message. I have tried using IE 7 as my browser on both computers and they both work OK.
See this Site Check report.
Error while checking the SSL Certificate!!
Unable to get the local issuer of the certificate. The issuer of a locally looked up certificate could not be found. Normally this indicates that not all intermediate certificates are installed on the server.