Hi In my network environment I have three servers, Server1 as PDC, Server2 as BDC, and server3 as Exchange 2007 server, and I have found the problem after I running dcdiag.exe in my PDC as bellow: Starting test: systemlog An Error Event occured. EventID: 0x40000004 Time Generated: 05/26/2011 15:08:24 Event String: The kerberos client received a An Error Event occured. EventID: 0x40000004 Time Generated: 05/26/2011 15:08:26 Event String: The kerberos client received a An Error Event occured. EventID: 0xC0001F60 Time Generated: 05/26/2011 15:18:56 Event String: The browser service has failed to retrieve the ......................... PDC failed test systemlog Starting test: VerifyReferences so how can i fix it? and what does the problem come from?

Clear your event viewer logs and the error will disappear. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration

Hello, before deleting the log files use the same time/date and check if the listed error is shown as resolved or start searching for a solution.Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hello! Thank for your answer, it does not have any Message Error after I clear log files and running dcdiag.exe.

hi, Everything ok, because the files log had been deleted and then it happend again after the event viewer --> system logs has the report about user login. Event type = error, Source = Kerberos and Computer PDC, and event view detail as bellow: The kerberos client received a KRB_AP_ERR_MODIFIED error from the server STAFF$. The target name used was cifs/PC001.abc.com. This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Commonly, this is due to identically named machine accounts in the target realm (ABC.COM), and the client realm. Please contact your system administrator. Please help me to fix it and give me some recommend about this case, thanks... and i had beend running Dcdiag.exe it has the error message as bellow: Starting test: systemlog An Error Event occured. EventID: 0x40000004 Time Generated: 05/27/2011 15:13:04 Event String: The kerberos client received a An Error Event occured. EventID: 0x40000004 Time Generated: 05/27/2011 15:13:04 Event String: The kerberos client received a An Error Event occured. EventID: 0x40000004 Time Generated: 05/27/2011 15:13:04 Event String: The kerberos client received a ......................... PDC failed test systemlog Starting test: VerifyReferences

Try the resolution mentioned in this Microsoft article: http://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Windows+Operating+System&ProdVer=5.2&EvtID=4&EvtSrc=Kerberos&LCID=1033 This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration

Hello, please see suggestions in: http://social.technet.microsoft.com/Forums/en-US/winserversecurity/thread/3ec12feb-d722-4693-85ac-2fb9d4d34188/ http://support.microsoft.com/kb/558115/en-usBest regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hello, I had been deleted some Computer Account that has problem in event view, but it is has only one have the same problem, and i get the new error in event veiw as bellow: Source: NETLOGON Type: Error User: N/A The session setup from the computer STAFF failed to authenticate. The following error occurred: Access is denied. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Ujoin it and join it again to your domain. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator