Mrb,
Userenv.log içinde aşağıdakı gıbı hata varsa ve ;
USERENV(198.4fc) 14:47:41:140 GetMachineToken: AcceptSecurityContext failed with
0x80090304
USERENV(198.4fc) 14:47:41:140 GetGPOInfo: Failed to get the machine token with
-2146893052
USERENV(198.4fc) 14:47:41:140 GetGPOInfo: Leaving with 0
USERENV(198.4fc) 14:47:41:140 GetGPOInfo: ********************************
USERENV(198.4fc) 14:47:41:140 ProcessGPOs: GetGPOInfo failed.
USERENV(198.4fc) 14:47:41:140 ProcessGPOs: No WMI logging done in this policy
cycle.
USERENV(198.4fc) 14:47:41:140 ProcessGPOs: Processing failed with error
-2146893052.

ayrıca netlogon.log içinde
07/09 13:37:04 [CRITICAL] NetpDcHandlePingResponse: corp.example.com.: Netlogon is
paused on the server. 0x14
07/09 13:37:04 [MISC] NetpDcGetName: corp.example.com. using cached information
07/09 13:37:04 [MISC] DsGetDcName function returns 0: Dom:RTMS_PDC Acctnull)
Flags: DS NETBIOS RET_DNS
07/09 13:37:05 [SITE] DsrGetSiteName: Returning site name 'Default-First-Site-Name'
from local cache.
07/09 13:37:05 [LOGON] SamLogon: Generic logon of CORP.EXAMPLE.COM\(null) from (null)
Package:Kerberos Entered
07/09 13:37:05 [LOGON] SamLogon: Generic logon of CORP.EXAMPLE.COM\(null) from (null)
Package:Kerberos Returns 0xC00002F5

gıbı seyler varsa çözüm;
Cozum sisteminde 1 adet domain controller varsa;

1- Start>Administrative Tools> Services
2-Netlogon service i aç
3-Startup type'ı Automatic yap..
4-ok de ve eger netlogon calısmıyorsa start diyip baslat...