Raoul and all: You´re right regarding the problems you could face if there is a difference greater than 10 minutes between any pair of domain controllers. It has to do more with synchronization than authentication. Nevertheless, you can manually set the time on a domain controller and eventually reapply the hotfix if that is an option.
The time service in Windows domains acts as a tree where the root is either the first domain controller installed for a given domain or the one holding the PDC emulator role in that domain. Every other server and workstation synchronize their clocks (by default) based on the mentioned DC. You can, however, alter the default behavior of this service altering the time server referred to by Windows. You can accomplish this using the net time commands. Open a command prompt and type net time /? To obtain help about this command. I hope this is what you´re looking for. Sincerely, Willy Fontana -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Raoul Armfield Sent: Thursday, February 08, 2007 1:07 AM To: [email protected] Cc: 'Sally Holt'; [EMAIL PROTECTED] Subject: Time Zone change and Kerberos Auth We have a situation where we need to install a piece of software that requires us to uninstall the ms hotfix KB928388. This of course is the hotfix that addresses the upcoming changes in DST here in the US. Until mid march this will not pose a problem. However, seeing how Authentication in AD/Kerberos is tied very closely with time synchronizations. We were wondering if there would be a problem with removing the hotfix and manually setting the clocks on the few machines that are affected. My thoughts are that even if we reset the time once they synchronize the time with the domain controllers they will go back to the hour off and authentications will fail. Am I wrong in thinking this. Raoul
