Doug, have you got a fix for this yet? It may be a registry issue of missing TCP/IP stack stuff. Do you get an error message? If so, paste the first 10-15 words directly into a kb search at Technet (or M$ support). Have seen it on 2 or 3 sites, where the machine simply (?) would not allow a connection to an Exchange Server (or more precisely - would not authenticate a user). Can find the article again (as I printed it), but no easy access right now! If you want me to find the article, e-mail me directly & I will post information to the group. I have posted this information previously! Stephen Hartley Brisbane, Australia Possible articles: KB articles KB281791; KB311573; KB321652; Check posts around very early May. -----Original Message----- From: Stelley, Doug [mailto:dstelley@xxxxxxx] Sent: Tuesday, June 03, 2003 10:10 PM To: [ExchangeList] Subject: [exchangelist] Lost Connection http://www.MSExchange.org/ Has anyone experianced this? We run E2k SP3 & Outlook '02 with all SP's. Here we have about 1000 users at around 400 workstations. Of these, maybe 1 per week lose the ability to connect to connect to the Exchange server. Nothing we've tried brings it back. Removing from the domain, reinstalling Office, redo-ing SP's, nothing. The only "fix" is to rebuild the PC. We can ping the server and all that. There are no listings in any event logs. We are at a loss as to what in heck could be happening. I beg you all, if you've come accross this and figured it out, please share what you did! Each station runs the newest Mcaffee, the Servers run GFI Security & GFI Essentials. Doug Stelley Network Admin. Olean General Hospital (716)375-7320 A person's maturity consists in having found again the seriousness one had as a child, at play. - Friedrich Wilhelm Nietzsche ------------------------------------------------------ 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 ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: exchlist@xxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') _______________________ Confidentiality Notice: The information contained in this message may be legally privileged and confidential information intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any release, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error please notify the author immediately by replying to this message and deleting the original message. Thank you.