Use automated site coverage by the DC Locator DNS SRV Records

Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2003, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista, WindowsXP

This policy setting determines whether domain controllers (DC) will dynamically register DC Locator site-specific SRV records for the closest sites where no DC for the same domain exists (or no Global Catalog for the same forest exists). These DNS records are dynamically registered by the Net Logon service, and they are used to locate the DC. If you enable this policy setting, the DCs to which this setting is applied dynamically register DC Locator site-specific DNS SRV records for the closest sites where no DC for the same domain, or no Global Catalog for the same forest, exists. If you disable this policy setting, the DCs will not register site-specific DC Locator DNS SRV records for any other sites but their own. If you do not configure this policy setting, it is not applied to any DCs, and DCs use their local configuration.

This policy has no additional user input fields.

• Computer
  Block NetBIOS-based discovery for domain controller location

  Windows10
• Computer
  Do not process incoming mailslot messages used for domain controller location based on NetBIOS domain names

  At least Windows Vista
• Computer
  Do not use NetBIOS-based discovery for domain controller location when DNS-based discovery fails

  At least Windows Server 2012, Windows 8 or Windows RT
• Computer
  Force Rediscovery Interval

  At least Windows Vista
• Computer
  Return domain controller address type

  At least Windows Vista
• Computer
  Set Priority in the DC Locator DNS SRV records

  At least Windows Server 2003 operating systems or Windows XP Professional
• Computer
  Set TTL in the DC Locator DNS Records

  At least Windows Server 2003 operating systems or Windows XP Professional