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More detailed information on GUI and Windows Power Shell-based installations, including command line syntax and step-by-step wizard instructions, see Install Active Directory Domain Services.For administrators that want to control the introduction of schema changes in an Active Directory forest independent of the installation of Windows Server 2012 DCs in an existing forest, commands can still be run at an elevated command prompt.
The Windows Power Shell-based AD DS Configuration Wizard automatically targets the schema and infrastructure master roles in the domains where DCs are being added, then remotely runs the required ADPREP commands on the relevant domain controllers.To help ensure consistent and predictable restart behavior for all devices and computers in your enterprise, including those that run Windows 8 and Windows Server 2012, see Microsoft KB article 2885694 (or see October 2013 cumulative rollup 2883201), then configure policy settings described in the WSUS blog post Enabling a more predictable Windows Update experience for Windows 8 and Windows Server 2012 (KB 2885694).The following table summarizes new features for AD DS in Windows Server 2012 R2, with a link to more detailed information where it is available.To help ensure consistent and predictable restart behavior for all devices and computers in your enterprise, including those that run Windows 8 and Windows Server 2012, you can configure the following Group Policy settings: Set machines to auto-install, prevent auto-reboot until desired time Policy: Configure Automatic Updates (Enabled)Configure automatic updating: 4 - Auto download and schedule the install Policy: No auto-restart with logged-on users (Disabled)WSUS deadlines: set to Fridays at 11PMPolicy: Configure Automatic Updates (Enabled)Configure automatic updating: 4 - Auto download and schedule the install Registry key: Enable the registry key discussed in Microsoft KB article 2835627Policy: Automatic Maintenance Random Delay (Enabled)Set Regular maintenance random delay to PT6H for 6-hour random delay to provide the following behavior:- Updates will install at the configured maintenance time plus a random delay- Restart for each machine will take place exactly 3 days later Alternatively, set a different maintenance time for each group of machines For more information about why the Windows engineering team implemented these changes, see Minimizing restarts after automatic updating in Windows Update.In Windows Server 2003 through Windows Server 2008 R2, you ran the x86 or X64 version of the command-line tool before running the Active Directory Installation Wizard, Dcpromo.exe, and had optional variants to install from media or for unattended installation.For more information, see article 942564 in the Microsoft Knowledge Base (https://go.microsoft.com/fwlink/? See Microsoft Security Advisory (937811) (https://go.microsoft.com/fwlink/? Link Id=164559) and article 976918 in the Microsoft Knowledge Base (https://go.microsoft.com/fwlink/? Review and install the hotfix in article 977073 (https://go.microsoft.com/fwlink/?
Link Id=186394) in the Microsoft Knowledge Base as required.
The wizard also exports a Windows Power Shell script that contains all the options that were specified during the graphical installation.
Taken together, the AD DS installation changes simplify the DC role installation process and reduce the likelihood of administrative errors, especially when you are deploying multiple domain controllers across global regions and domains.
For a more detailed explanation of some features, including their requirements, see What's New in Active Directory in Windows Server 2012 R2.
The Windows Server 2003 domain functional level is also deprecated because at the functional level, FRS is used to replicate SYSVOL.
Prior to the release of Windows 8, Windows Update managed its own internal schedule to check for updates, and to download and install them.