DCPromo Fails With Error: Failed To Examine The Active Directory Forest...

[6Foot2]

The full error message is:

 

Failed to examine the Active Directory forest. The error was: The operation cannot continue because LDAP connect/bind operation failed: error: 1326 (Logon failure: unknown user name or bad password.

 

One of our domain controllers failed on Thursday. I couldn't DCPromo it to demote it as a domain controller or promote it. I decided to rebuild it. That didn't work. I rebuilt it with a new name. I am still getting the same error on the newly rebuilt server.

 

I have Googled the error with little success. Has anyone solved this problem?

 

We have a parent-child domain based network. The server that is giving problems is in the parent domain.

 

Server OS: Windows Server 2008 R2 Enterprise.

 

Many thanks.

[januttall]

QQ:

is the server atached to the domain as a client like a workstation before you try to dcpromo it ?

[6Foot2]

QQ:

is the server atached to the domain as a client like a workstation before you try to dcpromo it ?

 

Yes it is. I would have thought that DCPromo would not work at all if it [the server] were not on the domain.

 

Thanks.

[piyushagrawal]

Hi,

 

Try to implement the solution given at:

RE: [ActiveDir] Weird thing with DCPROMO (SOLVED! - FEEDBACK FOR THOSE I

 

Hope it helps you.

Do update us again.

[Michael]

The server that failed in the parent domain, was it the FSMO role holder?

[6Foot2]

Hi. We solved it. Can't go into too much detail here but the answer was unexpected [don't ask]

 

Thanks for the replies.