Set TTL in the DC Locator DNS Records

This policy setting specifies the value for the Time-To-Live (TTL) field in SRV resource records that are registered by the Net Logon service. These DNS records are dynamically registered and they are used to locate the domain controller (DC). To specify the TTL for DC Locator DNS records click Enabled and then enter a value in seconds (for example the value “900” is 15 minutes). If you do not configure this policy setting it is not applied to any DCs and DCs use their local configuration.

Additional Information

  1. Registry path is:

    HKEY_LOCAL_MACHINE -> Software -> Policies -> Microsoft -> Netlogon -> Parameters # DnsTtl

  2. The Administrative Template path is:

    System -> Net Logon -> DC Locator DNS Records


* Making mistakes while changing registry values can affect your system adversely. We recommend you to create a System Restore point before making registry manipulation. If you're new to Registry Editor, read this beginner's guide.
** To locate the registry and administrative template path, checkout beginner's guide.
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