Ntdsai.dll – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

02-Apr-2014 – 6.1.7601.22645 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2862304 – AD DS or AD LDS responds slowly to complex LDAP query that has a deeply nested filter on Windows server

26-Mar-2014 – 6.1.7601.22640 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2955074 – Retrieval of paged results is interrupted when an LDAP server receives queries that generate many results

05-Mar-2014 – 6.1.7601.22617 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2886087 – Lsass.exe process crashes on a computer that’s running Windows 7 or Windows Server 2008 R2 SP1

27-Jan-2014 – 6.1.7601.22582 – Ntdsai.dll – x86/x64 – http://support2.microsoft.com/kb/2922852 – Update resolves a problem in which LDAP, Kerberos and DC locator responses are slow or time out with Windows

05-Jul-2013 – 6.1.7601.22377 – Ntdsai.dll – x64 – http://support.microsoft.com/kb/2868765 – 1783 RPC_X_BAD_STUB_DATA error message when a Windows Server 2008 R2-based DC tries to replicate an RPC packet

07-Jun-2013 – 6.1.7601.22351 – Ntdsai.dll – x64 – http://support.microsoft.com/kb/2682997 – Active Directory replication fails with event 1084 and status 8206: “The directory service is busy”

06-Jun-2013 – 6.1.7601.22350 – Ntdsai.dll – x64 – http://support.microsoft.com/kb/2847777 – Performance of Active Directory operations decreases when a deletion event occurs during an SDprop operation on a Windows Server 2008 R2-based domain

06-Jun-2013 – 6.1.7601.22350 – Ntdsai.dll – x64 – http://support.microsoft.com/kb/2846725 – High CPU usage in domain controllers after you perform a schema update in a Windows Server 2008 R2-based Active Directory forest

10-Apr-2013 – 6.1.7601.22296 – Ntdsai.dll – x64 – http://support.microsoft.com/kb/2781048 – Restart for domain controllers in Windows Server 2008 R2 SP1 take longer than expected

10-Apr-2013 – 6.1.7601.22296 – Ntdsai.dll – x64 – http://support.microsoft.com/kb/2671874 – Heavy WAN usage after you restart centralized Windows Server 2008 R2-based domain controllers

08-Feb-2012 – 6.1.7601.21918 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2665616 – You cannot install a new domain controller on a computer that is running Windows Server 2008 R2 because of an RPC error

05-Nov-2011 – 6.1.7601.21855 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2641962 – The msDS-HasInstantiatedNCs and msDS-hasMasterNCs attributes do not replicate if an authoritative restore is performed in Windows Server 2008 R2

04-Nov-2011 – 6.1.7601.21854 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2458125 – The Value field under the Attribute item for event ID 5136 is empty in Windows Server 2008 and in Windows Server 2008 R2

18-Oct-2011 – 6.1.7601.21841 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2621146 – MS11-095: Description of the security update for Active Directory: December 13, 2011

01-Oct-2011 – 6.1.7601.21830 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2618669 – An update is available to detect and prevent too much consumption of the global RID pool on a domain controller that is running Windows Server 2008 R2

28-Sep-2011 – 6.1.7601.21827 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2616886 – Group membership is emptied on a Windows Server 2008 R2-based RODC after the group is converted from a universal group into a global domain group or a local domain group

27-Aug-2011 – 6.1.7601.21802 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2601626 – MS11-086: Description of the security update for Active Directory: November 8, 2011

14-Jul-2011 – 6.1.7601.21770 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2580503 – The DirSync control returns more search results than expected in a Windows Server 2008 R2-based domain

11-May-2011 – 6.1.7601.21725 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2526455 – You cannot open the properties of any object by using ADSI Edit after you mount a restored Active Directory database file by using the Active Directory database mounting tool in a Windows Server 2008 R2 Active Directory domain environment

26-Jan-2011 – 6.1.7601.21649 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2500682 – NSPI query for address book information is slow and high CPU usage on domain controllers in a Windows Server 2008 R2 domain

18-Dec-2010 – 6.1.7601.21624 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2468316 – A paged LDAP query fails on the second page and the pages that follow in Windows Server 2008 R2

18-Dec-2010 – 6.1.7601.21624 – Ntdsai.dll – x86/x64 – http://support.microsoft.com/kb/2413670 – Events 1659, 1481, and 1173 are recorded in the Directory Service event log on Windows Server 2008 R2-based domain controllers after you remove Active Directory Domain Services from the last domain controller in a tree root domain