May be some group policy pushing them out.
--please don't forget to upvote
and Accept as answer
if the reply is helpful--
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In a setup with 10-15 windows devices with an on-premises domain controller, group policy etc there is one computer that after a few hours has the radio button of "Append these DNS suffixes (in order)" selected with an old DNS address entered in the box below. The DNS has not been used for a while and I have no idea where it is getting it from.
Is there anywhere I can check to stop it constantly reverting back to this setting? I want the radio button to default to "Append primary and connection specific DNS suffixes". I've attached a screenshot of how I want the setting to remain.
Any ideas greatly appreciated!!!
May be some group policy pushing them out.
--please don't forget to upvote
and Accept as answer
if the reply is helpful--
Thanks, unfortunately that did not work. I did see that in regedit under Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters the NameServer was showing the old DNS. I've removed this and rebooted however the DNS suffix is back again, but the reg key does not have this value anymore.