I purchased a cheap SSL certificate from NameCheap (GeoTrust RapidSSL, to be precise), and many users are complaining that they are getting an "Untrusted SSL certificate" error when visiting the page. I've gotten compalints from the following enviornments:
- Windows 7 with IE9
- Windows 7 with latest Chrome
- Windows Vista with latest Chrome
- Windows 7 with latest Firefox
- Windows XP with IE8
However, many users with those configurations experience no problems. I personally use OS X and Windows 7 with Chrome Canary and the latest Firefox (respectively) and have never seen an error.
What could be causing these seemingly inconsistent SSL warnings? I was under the impression that the RapidSSL product was valid in 99+% of browsers, but I constantly hear about invalid certificates from many users.
I am using Nginx 1.4.1 with the following configuration:
listen 443 ssl; listen [::]:443 ssl default ipv6only=on; ssl on; ssl_certificate /path/to/cert.crt ssl_certificate_key /path/to/cert.key; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ssl_ciphers RC4:HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on;
Note: I have never heard about an iOS or OS X device throwing the error.