Ha, you should have additional entries in the event log around this same time. If not, try turning up the logging on the store (private I suspect) and see if you can capture more information. Al -----Original Message----- From: NGUYEN HONG HA [mailto:HANH.EVNIT@xxxxxxxxxx] Sent: Wednesday, February 11, 2004 11:02 PM To: [ExchangeList] Subject: [exchangelist] Critical Error http://www.MSExchange.org/ Hi, I have an Exchange5.5 on a Windows 2000 Server. Recently it has this error as well as the MSExchange Information Store Service stop everyday. Event Type: Error Event Source: MSExchangeSA Event Category: Monitoring Event ID: 1005 Date: 2/12/2004 Time: 10:38:21 AM User: N/A Computer: SERVER1 Description: Unexpected error <<0xc0040000 - Network problems are preventing connection to the Microsoft Exchange Server computer. Microsoft Exchange Server Information Store ID no: 80040115-0514-000006bf>> occurred. Any suggestion is welcome. Many thanks in advance. Ha. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------