While checking event logs I had seen an error or warning about AD Topology running in limited mode. Following the links on how to resolve it I wound up on the site http://support.microsoft.com/kb/940845#LetMeFixItMyselfAlways I ran the file MicrosoftFixit50328.msi Now I cannot start the Microsoft Exchange System Attendant When I try to start the service I get: Windows could not start the Microsoft Exchange System Attendant service on Local Computer. Error 1075: The dependancy service does not exist or has been marked for deletion. The event log I see shows: Event ID 7003 Source: Service Control Manager The Microsoft Exchange System Attendant service depends the following service: NtLmSsp. This service might not be installed. does anyone have any suggestions on how to fix this problem. Mark

I was trying to solve issues on my Windows Server 2008 R2 maching running Exchange 2010. I wound up runing a mrfixit program to adjust the service dependies to as this fix reports it would address some AD Topology issue. The program filename is MicrosoftFixit50328.msi and was downloaded from http://support.microsoft.com/kb/940845#LetMeFixItMyselfAlways If you goto that page it describes several issues that this would correct/fixThe reason I thought this might help was to address the following error I was finding in the events on the server Event ID: 2601 Source: MSExchange ADAccess Category: General Type: Warning Description: Process MSEXCHANGEADTOPOLOGY (PID=1624). When initializing a remote procedure call (RPC) to the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the SID for account <WKGUID=DC1301662F547445B9C490A52961F8FC,CN=Microsoft Exchange,CN=Services,CN=Configuration,...> - Error code=80040934. The Microsoft Exchange Active Directory Topology service will continue starting with limited permissions. I believe did the wrong thing here as the machine is not DC just a member of a domain. The service will not start now. Event ID 703Message: The Microsoft Exchange System Attendant service depends the following service: NtLmSsp. This service might not be installed. I'm trying to basically undo what that file did. I didn't back up any registry keys and the installer does not have an undo. Can anyone shed some light as to how I may resolve this situation? Mark

is this your only Exchange 2010 server? i would go into maintenance mode and attempt to repair.Mike Crowley: MCT, MCSE, MCTS, MCITP: Enterprise Administrator / Messaging Administrator

Quote: “The Microsoft Exchange System Attendant service depends the following service: NtLmSsp. This service might not be installed” NTLMSSP (NTLMSSSP) service has been removed and replaced by Kerberos authentication on the windows server 2008 “Others did not start because a core dependency service for them, NtlmSsp, does not exist in Windows 2008. Not to be deterred, I went into the registry, removed the dependency listing for NtlmSsp, and rebooted the system. That got other services to start, namely the System Attendant, Search Indexer, and the Store” ---------Refer to <Mission Impossible: In-Place Upgrading Microsoft Exchange Server 2007 from Windows Server 2003 to Windows Server 2008> Please remove the dependency for NTLMSSP service, and also check the status of other services that listed under the “Let me fix it myself” section in the KB 940845 Resources: Application Compatibility: Compatibility Risks NTLMSSP (Wikipedia)James Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com