The specified domain either does not exist or could not be contacted.
재부팅한 후 AD에서 "Active Directory Users and Computers"를 실행하니 다음과 같은 오류가 발생했습니다.
Naming information cannot be located because:
The specified domain either does not exist or could not be contacted.
Contact your system administrator to verify that your domain is properly configured and is currently online.
좀 더 자세한 오류를 얻을 수 있을까 싶어 dcdiag를 실행했는데요.
C:\Windows\system32>dcdiag /fix
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
Home Server = testad
* Identified AD Forest.
Done gathering initial info.
Doing initial required tests
Testing server: Default-First-Site-Name\TESTAD
Starting test: Connectivity
......................... TESTAD passed test Connectivity
Doing primary tests
Testing server: Default-First-Site-Name\TESTAD
Starting test: Advertising
Fatal Error:DsGetDcName (TESTAD) call failed, error 1355
The Locator could not find the server.
......................... TESTAD failed test Advertising
Starting test: FrsEvent
......................... TESTAD passed test FrsEvent
...[생략]...
이와 함께 이벤트 로그에는 다음과 같은 식의 항목이 생성됩니다.
This computer was not able to set up a secure session with a domain controller in domain TESTAD due to the following:
There are currently no logon servers available to service the logon request.
This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator.
ADDITIONAL INFO
If this computer is a domain controller for the specified domain, it sets up the secure session to the primary domain controller emulator in the specified domain. Otherwise, this computer sets up the secure session to any domain controller in the specified domain.
DFSRs (3832) \\.\C:\System Volume Information\DFSR\database_6864_19D6_6418_A8B8\dfsr.db: The database engine stopped the instance (0).
Dirty Shutdown: 0
Internal Timing Sequence: [1] 0.000, [2] 0.000, [3] 0.000, [4] 0.000, [5] 0.031, [6] 0.000, [7] 0.000, [8] 0.000, [9] 0.031, [10] 0.000, [11] 0.016, [12] 0.000, [13] 0.000, [14] 0.000, [15] 0.000.
관련해서 검색해 보니, 다음의 글에서 해결 방법에 대한 힌트를 얻었습니다.
Computer was not able to setup a secure session with a domain controller
; http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/2fe6bb7f-3b93-4d8b-ab50-ad4b132b3d8e/
AD 컴퓨터에 가서 "서비스 관리자"를 이용해 "NETLOGON" NT 서비스의 상태를 확인했는데, 웬일인지 "Paused" 상태로 있었던 것입니다. 그래서, 다시 Resume 해주니 정상적으로 AD 컴퓨터가 동작되었습니다.
[이 글에 대해서 여러분들과 의견을 공유하고 싶습니다. 틀리거나 미흡한 부분 또는 의문 사항이 있으시면 언제든 댓글 남겨주십시오.]