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We have a bunch of Windows 7 and Windows Vista clients that belong to domain contoso.com. The clients are registered in DNS to client.contoso.com. We have changed the DNS suffix via GPO from client.contoso.com to contoso.com. This worked fine for most of the clients - servicePrincipalNames got updated automagically including the computer objects dNSHostName attribute.

However some of the clients keep failing to update the attribute, which results in the following error messages:

Log Name: System

Source: NETLOGON

Event ID: 5789

Level: Error

Computer: someClient

Attempt to update DNS Host Name of the computer object in Active Directory failed. The updated value was 'someClient.contoso.com'. The following error occured: The requested resource is in use.

So far the only solution to this problem was removing the client from the domain and put it back in, which is kind of brute force method to solve this. The AD objects seems to have to correct permissions to update the mentioned attribute.

Set-ADComputer -Identity someClient -DNSHostName someClient.contoso.com

Set-ADComputer : While processing a change to the DNS Host Name for an object, the Service Principal Name values could not be kept in sync
At line:1 char:1
+ Set-ADComputer someClient -DNSHostName someClient.contoso.com
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (someClient:ADComputer) [Set-ADComputer], ADException
    + FullyQualifiedErrorId : While processing a change to the DNS Host Name for an object, the Service Principal Name values could not be kept in sync,Micros
   oft.ActiveDirectory.Management.Commands.SetADComputer

get-adcomputer someCliemt

DistinguishedName : [...]
DNSHostName       : someClient.client.contoso.com
Enabled           : True
Name              : someClient
ObjectClass       : computer
ObjectGUID        : fdddd6ec-44f3-5b63-xxxx-55229cexxxxx
SamAccountName    : comeClient$
SID               : S-1-5-21-1815460242-1203374957-4236298635-xxxxxx
UserPrincipalName :

Things I have tried so far:

  • Running gpupdate /force several times... rebooting of course
  • Verified the client receives the correct DNS suffix settings from the GPO
  • Verified the built-in object SELF has the Validated write to DNS host Name and the Validated write to Service principal Name permissions

Any ideas on how to solve this, without having to rejoin the computers?

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2 Answers 2

Reset to default
1

I found a simple solution to the problem. If I first "reset" the attribute to $null it works as expected... 

Set-ADComputer -Identity someClient -DNSHostName $null
Set-ADComputer -Identity someClient -DNSHostname someClient.contoso.com
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I analyzed it using dcdiag

DCDIAG /TEST:DNS /V /E /F:<filename.log>

This revealed an RCP not available error.

There are a lot of documents how to deal with this error, but nothing helped. Finally I installed wireshark and were was some weird trafic from an unknown IP: My server had a second IP defined for the interface. After removing this second IP all went fine.

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