Jack, I must apologize, as your answer was on the right track...

Turns out there's a few things I didn't know about the network here...

1. While *.domain.com is in the Trusted sites, it apparently doesn't work too well...

2. Adding the servername.domain.com to the Local Intranet via GPOs did resolve the problem...

So, thank you!

It looks like the reason the QA server worked, is it doesn't use the FQDN. While a solution was briefly considered to get a new SSL Cert for Prod without the FQDN, turns out policy says NO to this.

A week of banging my head against this, and I had the answer on Tuesday...

Really, eye R schmart!

:rolleyes:

Jason