Can't connect to internal web server via application
I have a connection for an external customer on an external web server to an internal web server via https (443) using web services. Both are recently created Windows 2008 R2 64bit servers using IIS7. I can't get the certificate to install correctly by installing it from the certificate error page. I thought i could install it using the servers certificate.
The external server in an a workgroup and in the internal web server is in a domain.
However my knowledge of certificates is weak and I just can't get it to connect correctly.
System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure............