Update Security Level

Specifies whether the computers to which this setting is applied use secure dynamic update or standard dynamic update for registration of DNS records.

To enable this setting, click Enable, and then choose one of the following values.

Unsecure followed by secure - if this option is chosen, computers send secure dynamic updates only when nonsecure dynamic updates are refused.

Only Unsecure - if this option is chosen, computers send only nonsecure dynamic updates.

Only Secure - if this option is chosen, computers send only secure dynamic updates.

If this setting is not configured, it is not applied to any computers, and computers use their local configuration.

Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
Update Security Level:


  1. Only Secure
    Registry HiveHKEY_LOCAL_MACHINE
    Registry PathSoftware\Policies\Microsoft\Windows NT\DNSClient
    Value NameUpdateSecurityLevel
    Value TypeREG_DWORD
    Value256
  2. Only Unsecure
    Registry HiveHKEY_LOCAL_MACHINE
    Registry PathSoftware\Policies\Microsoft\Windows NT\DNSClient
    Value NameUpdateSecurityLevel
    Value TypeREG_DWORD
    Value16
  3. Unsecure followed by Secure
    Registry HiveHKEY_LOCAL_MACHINE
    Registry PathSoftware\Policies\Microsoft\Windows NT\DNSClient
    Value NameUpdateSecurityLevel
    Value TypeREG_DWORD
    Value0


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