403 forbidden error going through AWS load balancer

I have IIS 7 behind an AWS load balancer, using a Verisign SSL certificate. Connecting to the URL, or the DNS name of the load balancer results in a 403 error:

error 403 - forbidden: access is denied you do not have permission to view this directory or page using the credentials that you supplied

The URL is accessible from localhost or the IP address of the server. It doesn't work through the load balancer.

I reinstalled the certificate and recreated the load balancer with and without intermediate certs.

I got the intermediate certs from: https://knowledge.verisign.com/support/ssl-certificates-support/index?page=content&actp=CROSSLINK&id=AR1409&TID=retailssl

I followed the steps here to install the certs for the load balancer.

http://www.xdevsoftware.com/blog/post/Upload-IIS-SSL-Certificate-into-Amazon-Elastic-Load-Balancer.aspx

Is there a setting on IIS to allow traffic in from the load balancer?

Thanks!

Check your application pool account (or anonymous user) to see if it has permission to the certs folder...