Enable TTL Set in the A and PTR records through command prompt

To enable the group policy
"TTL Set in the A and PTR records" , run the following command.

reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v RegistrationTtl /t REG_DWORD /d 900 /f





To disable or to set as "Notconfigured" just delete the reg key

reg delete "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v RegistrationTtl /f