Applies To: Windows Server 2008 R2
The NetLogon service verifies NTLM logon requests, and it registers, authenticates, and locates domain controllers. Also, to maintain compatibility with older operating systems, NetLogon manages replication of the user account database to back up domain controllers running Windows NT 4.0 and earlier.
The following is a list of all aspects that are part of this managed entity:
The Netlogon service creates the Netlogon and SYSVOL shares during the domain controller promotion process. The Netlogon share stores the logon script and possibly other files. The SYSVOL share is the shared directory on domain controllers that contains Group Policy and logon script information.