Hello, We are getting the following erros: Event Type: Error Event Source: EXODBPC Event Category: None Event ID: 903 Date: 28-5-2011 Time: 11:12:53 User: N/A Computer: srv001 Description: The description for Event ID ( 903 ) in Source ( EXODBPC ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: EXOLEDB. Data: 0000: 05 00 00 00 .... Event Type: Error Event Source: DAVEXPC Event Category: None Event ID: 903 Date: 28-5-2011 Time: 11:12:53 User: N/A Computer: srv001 Description: The description for Event ID ( 903 ) in Source ( DAVEXPC ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: DAVEX. Data: 0000: 05 00 00 00 .... Does anyone know what this means and how we can solve this? Exchange 2007 sp3; Windows server 2003 r2 x64. The errors appear once a week. Thanks! Remco

Are you monitoring Exchange by using performance counters while the error occurs ? If yes, please stop the monitoring for testing purposes and see if the issue goes away.Vincenzo MCTS, MCTIP Server 2008 | MCTS Exchange 2010 | WatchGuard Firewall Security Professional

What is the version of exchange you are using? When you are getting these events? Gulab | MCITP: Exchange 2010 | MCITP: Exchange 2007 | Skype: Gulab.Mallah | Blog: www.ExchangeRanger.blogspot.com

Hi As far as I know, Microsoft Exchange Search Indexer and Microsoft Search (Exchange) services error will meet these two events. You can read these two relevant cases. http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/616e6c05-4175-4401-b97d-f389b1fb88b0 http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/07cb0ea4-5f20-4ae6-bba7-13522b58ccc2Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

I Had already checked these two forums, but they didn't solve my case. I'm getting the errors every saterday at 11 o'clock and i'm unable te reproduce the problem.

Hi Which schedule work did you do on Saturday 11:A.M? Backup database ,search email, etc ? Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

There a no scheduled task and i can't find anything that's running on that time schedule. The maintaince schedules are running between 2 and 6 o'clock.