Applies to Windows Server 2008R2
Microsoft does not recommend installing the Remote Desktop Services role (Terminal Services role) on a domain controller in Windows Server 2008R2. If you have installed both roles, you may notice printing issues whereby documents won’t print to your redirected printer even thought it shows as available. First review the event viewer and look for entries regarding printing and Access is Denied. You may need to change permissions/security on the windowssystem32spoolprinters folder to full access for printing to occur.
See link from support.microsoft.com for additional information: