A while back I wrote about an issue that I encountered when attempting to configure DirectAccess in Windows Server 2012 R2 using a dedicated Network Location Server (NLS). In this deployment scenario, the Remote Access Setup Wizard would fail and return the following error message:
The configuration was rolled back successfully. The URL specified for the network location server cannot be resolved to an IP address.
Upon further investigation, the NLS server name does indeed resolve correctly, and clicking validate when defining the NLS works without issue. Originally I proposed a workaround that involved changing a registry setting. However, after working with Microsoft to identify the issue they have released a hotfix to resolve this issue correctly. You can download the hotfix here.