Dear all.My LAN have 4 computer are clients (Windows XP SP2), 1 computer is server (Windows Server 2K3).My server up to domain server and 4 clients joined in this domain. And i created account A.In recent time, some client doesn't login to domain by account A, when i login on the monitor show messenge : "... server down ...". But if I login this account with other client is OK.Sometime, 3 per 4 client same. IP adress, DNS... not change.When i unjoin domain and joinning again this client login OK.Everybody can tell me what happend in my LAN?Server or Client have problem?Thanks all.

Your english is a bit difficult, but from what I understand from the post, you are having problems with only 1 account when login to the domain. Make sure the DNS server is set correctly (domain server with DNS and external forwarders), but if it is only 1 account it might be a problem with the account. It is possible there is already a local account with the same name. Try using the format account@domain , so for example, the account is usera in the domain contoso.com, the account would be usera@contoso.com. Also, I think I saw this message about 4 or 5 years ago whenI changed the PC name and joined the domain at the same time. Change the PC name, restart, then join the domain.

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