There is one more error Event ID : 4319 A duplicate name has been detected on the TCP network. The IP address of the machine that sent the message is in the data. Use nbstat -n.......................... Ther is no duplicate ip or name on the network. I have 2 NIC card on DC with ip 101.1 & 101.3. 101.1 is the DNS. If I disable 101.3 the error goes away. Rest of the Network has DHCP enabled Also I have mcafee on exchange. Best Regards Shoeb -----Original Message----- From: Zoran [mailto:zmarjanovic@xxxxxxxx] Sent: Wednesday, February 04, 2004 6:16 PM To: [ExchangeList] Subject: [exchangelist] Re: Exchange 2000 Information store error http://www.MSExchange.org/ Probably not. If exchange is not DC then disable computer browser service and WINS-if not in use, to clear this. I wouldn't know how to help you, but if you don't find anything better then this is what I did once after I rushed with new fixes, and had strange problems with exchange without any error in logs. As I had exchange databases on separate hard disks I reinstalled windows and sp4, then run exchange setup in recovery mode and installed sp3 (NO post sp3 pack). Restarted server and it was ok, as it hooked to stores and mounted them without problems. Then reinstalled my AV filter and client, and since then I have no problems. Again, this the last resort solution. Good luck. Zoran ------------------------------------------------------ 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 ------------------------------------------------------