So our Technology team performed an upgrade to our Domain Controllers yesterday. We're now running Windows Server 2012 instead of Windows Server 2008. This upgrade, while everything else appeared normal, broke our Cisco ASA VPN connections with AnyConnect. After troubleshooting this morning with Cisco, they fixed it by unchecking "Enable LDAP over SSL" in our AAA Server settings on the ASDM.
So, my main question is this: what has changed with LDAP and Server 2012 -- why won't our ASA communicate with Server 2012 when LDAP over SSL is enabled?