CERT_COMMON_NAME_INVALID

The server responded with a certificate whose common name did not match the host name. This could mean:

1. An attacker has redirected our traffic to his server and is presenting a certificate for which he knows the private key.
2. The server is misconfigured and responding with the wrong cert.
3. The user is on a wireless network and is being redirected to the network's login page.
4. The OS has used a DNS search suffix and the server doesn't have a certificate for the abbreviated name in the address bar.