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I have installed AD CA and I am getting this error(Event ID 91) :

A connection to Active Directory Directory Services could not be established. Active Directory Certificate Services will try to connect again when it needs Active Directory access.

it seems that CA cant connect to AD, I read this article about that,

  1. The ping to domain name and dc machine are normal
  2. The permissions on essential AD DS containers and objects are fine
  3. The result of nltest /sc_verify: [domainname] is :

    I_NetLogonControl failed: Status = 1355 0x54b ERROR_NO_SUCH_DOMAIN

I am using VMware for testing this scenario.

but I still have this problem,
How can I solve that?
Thanks in your Advise.

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up vote 0 down vote accepted

my problem solved by installing Windows Server 2008 SP2.

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