DNS server address order

ACapo · Dec 20, 2022

We recently started having a problem where if the Domain Controller is not listed first in the "DNS Server addresses, in order of use". The computer will not join the Domain? It is supposed to go to the next server on the list if the first one is not a domain controller. Does anyone have any idea what could cause this? I believe it is causing other issues . I know the workaround is to put the Domain Controller first. But we have never had to do that before.

Neemobeer · Dec 21, 2022

Are you joining by the domain NetBIOS name or fqdn? That can impact how it resolves to your domain controller as well

Neemobeer · Dec 20, 2022

DNS is used to locate srv records for ldap, so if you only have one internal DNS server and it is the DC then yes it would need to be first. Best practice is to have two DCs and two DNS servers

ACapo · Dec 21, 2022

Neemobeer said:
DNS is used to locate srv records for ldap, so if you only have one internal DNS server and it is the DC then yes it would need to be first. Best practice is to have two DCs and two DNS servers

We have had our DNS servers listed first before the domain controllers and it never mattered.

ACapo · Dec 21, 2022

ACapo said:
We have had our DNS servers listed first before the domain controllers and it never mattered.

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Neemobeer · Dec 21, 2022

Are you joining by the domain NetBIOS name or fqdn? That can impact how it resolves to your domain controller as well

ACapo · Dec 27, 2022

Neemobeer said:
Are you joining by the domain NetBIOS name or fqdn? That can impact how it resolves to your domain controller as well

ACapo · Dec 27, 2022

The Domain Controller is .230 The other 2 are DNS servers . If .230 is listed first the computer will join the Domain. The order has never mattered in the past and in theory it should not matter.

ACapo · Dec 30, 2022

Microsoft admitted today that this is caused by KB5019966 . They are still working on a fix.

DNS server address order

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