The process may fail when you try to enable load balancing in DirectAccess in Window Server 2012

If you cannot temporarily disable force tunneling in a production environment, you can use staging GPOs for DirectAccess to let the configuration changes occur without production clients being affected. 

For more information about staging GPOs, see section 1.8.4 of the "Plan the Remote Access Infrastructure" documenation. This documentation is available at the following Microsoft TechNet website:

Or, you can use sample scripts to work around the issue by changing the DirectAccess server GPO directly. The scripts temporarily change the registry value that is causing the load-balancing checks to fail. For more information about these scripts, go to the following TechNet website: 


Note These scripts are not supported under any Microsoft standard support program or service. The sample scripts are provided "as is" without warranty of any kind. Microsoft disclaims all implied warranties including, without limitation, any implied warranties of merchantability or of fitness for a particular purpose. The whole risk arising out of the use or performance of the sample scripts and documentation remains with you. In no event shall Microsoft, its authors, or anyone else involved in the creation, production, or delivery of the scripts be liable for any damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss) arising out of the use of or inability to use the sample scripts or documentation, even if Microsoft has been advised of the possibility of such damages.