Getting a kerberos error when trying to explore client PC

15 pts.
Microsoft Windows Server 2003
SBS 2003
Windows Security
Hello people A friend has asked me if I could resolve a problem he has with his small office network. He has a server running Windows 2003 Small Business Server and two clients PC's using XP. He has a fax program on one of the clients that he used to route his information from the server from to the client as the server does not have a built in modem. It used to work fine but after installing updates approx 8 months, he has to print out reports and fax them manually. I have logged into the server remotelty and noticed in the event log he is getting lots of kerberos errors: the message being: The kerberos client received a KRB_AP_ERR_MODIFIED error from the server ACER-WS1$. The target name used was cifs/Acer-ws1. This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Commonly, this is due to identically named machine accounts in the target realm (*******), and the client realm. Please contact your system administrator. Also when I try and explore the client from the server in Micorsoft networks I get the error. \Acer-ws1 is not accessible. You might not have permission to use this network resource.Contact the administrator of this server to find out if you have permission. Logon failure: The target account name is incorrect. I am logged in as administrator and I can ping the client by name and ip. I have looked into kerberos online and understand it is an authentication service, but I am not too sure where to look to find the names that are held within the kerberos service if this is at all possible. If not any pointers as to how I may resolve this issue would be greatly apprieciated. Graeme

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This may be small or little help at all, Kerebos is based on the authentication of timing, (NTP) if the time is out and not accurate within 5 minutes of each other it will not authenticate. Check to see if the server and the clients using the server are on the same time line.

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  • Gcoutts
    Hi Golfer2 Thanks for the reply I will not be able to check the time till Tuesday now as office is closed for w/end. I'm fairly sure times are ok on clients and the server as well but I will try out your advice. Thanks Graeme
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