Hi all,
We are in the process of upgrading our domain controllers from Server 2003 SP2 to Server 2012 R2. We have a test environment that has our two 2003 DC's (created using recent system state backups), two 2012 R2 servers, and multiple workstations. Active Directory, DNS, and DHCP all appear to be functioning correctly. We were able to run adprep from the 2012 CD successfully with no errors; however, when we try to promote our 2012 server we can't get past the "Prerequisites Check" step. On screen, we getting the following errors:
- One or more prerequisites failed. Please fix these issues and click "Rerun prerequisites check".
- Verification of prerequisites for Domain Controller promotion failed. The operation did not complete successfully.
The following is what is showing in the adprep log:
[2015/08/20:14:15:58.749]
Adprep created the log file 'C:\Windows\debug\adprep\logs\20150820141558-test\ADPrep.log'
[2015/08/20:14:15:58.749]
Adprep successfully initialized global variables.
[Status/Consequence]
Adprep is continuing.
[2015/08/20:14:15:58.755]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is CN=Schema,CN=Configuration,DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.756]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.756]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is CN=2003DC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.757]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.757]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is CN=Schema,CN=Configuration,DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.758]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.759]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is CN=Infrastructure,DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.760]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.760]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is CN=2003DC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.761]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.777]
Adprep discovered the Infrastructure FSMO: 2003DC1.corp.mydomain.com.
[2015/08/20:14:15:58.780]
Adprep connected to the Infrastructure FSMO: 2003DC1.corp.mydomain.com.
[2015/08/20:14:15:58.781]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is (null).
[2015/08/20:14:15:58.781]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.781]
Adprep successfully retrieved information from the Active Directory Domain Services.
[2015/08/20:14:15:58.781]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.782]
LDAP API ldap_search_s finished, return code is 0x0
[2015/08/20:14:15:58.782]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is (null).
[2015/08/20:14:15:58.782]
LDAP API ldap_search_ext_s finished, return code is 0x0
[2015/08/20:14:15:58.782]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is (null).
[2015/08/20:14:15:58.784]
LDAP API ldap_search_s finished, return code is 0x0
[2015/08/20:14:15:58.784]
Adprep does not find the tokenGroups attribute on the RootDSE object of the Active Directory Domain Controller. This attribute is not avaliable on Windows Server 2003 or lower version of Windows. Adprep will try to obtain token groups from the User object.
[2015/08/20:14:15:58.784]
The parameters /userdomain and /user are not specified. Using current logon user's domain ...
[2015/08/20:14:15:58.784]
The current logon user's domain is CORP.MYDOMAIN.COM.
[2015/08/20:14:15:58.785]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is (null).
[2015/08/20:14:15:58.785]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.785]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.786]
LDAP API ldap_search_s() finished, return code is 0x0
[2015/08/20:14:15:58.786]
Adprep was about to call the following LDAP API. ldap_search_s(). The base entry to start the search is CN=Admin Account,OU=IT Users,DC=corp,DC=mydomain,DC=com.
[2015/08/20:14:15:58.789]
LDAP API ldap_search_s finished, return code is 0x0
As far as we can tell, there are no errors in the log above.
Does anyone have any idea where we might be going wrong? Any help will be greatly appreciated!