I have a 2003 r2 domain running in native mode. I have installed Exchange 2007 on a virtural server and recieve the following error ( All times are correct ) Log Name: Application Source: MSExchangeIS Date: 9/17/2009 1:58:17 PM Event ID: 5003 Task Category: General Level: Error Keywords: Classic User: N/A Computer: vpdexchange.PublicSafety.LCL Description: Unable to initialize the Microsoft Exchange Information Store service because the clocks on the client and on the server machine are skewed. This may be caused by a time change either in the client or the server machine, and may require a reboot of that machine. Other than that, verify that your domain is properly configured and is currently online. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="MSExchangeIS" /> <EventID Qualifiers="49158">5003</EventID> <Level>2</Level> <Task>6</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2009-09-17T18:58:17.000000000Z" /> <EventRecordID>10311</EventRecordID> <Channel>Application</Channel> <Computer>vpdexchange.PublicSafety.LCL</Computer> <Security /> </System> <EventData> </EventData> </Event>

Hi Blessed82 Restart the Microsoft Exchange Active DirectoryTopology Service....Once this service is restarted....restart the SA service and then the IS serviceThanks

Hi,The only servers that needs time servers are the domain controllers. Therefore I would suggest you take the NTP settings out and restart the Time service. If you are continuing to get the same error then it has to be time related somewhere. I presume the servers have the time zone updates installed.RegardsSyed Arsalan.syed.arsalan

Check the Virtual Server (base machine Time settings) generally hosts take the time settings from Base machine....

User Action in Event 5003 Please also run the ExBPA against the exchange for health check