Guest Blarneystone Posted October 25, 2007 Posted October 25, 2007 I am helping my new client fix a number of networking problems on their 2K3 network. One of the issues, that has been plaguing them for months is the LDAP error event ID 40960: >>The Security System detected an authentication error for the server LDAP/<servername@domain...>. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information.<<< Similarly, they get an error: EVENT LOG System EVENT TYPE Warning SOURCE LSASRV CATEGORY SPNEGO (Negotiator) EVENT ID 40960 The Security System detected an authentication error for the server LDAP/<server name>. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information. (0xc000006d)". And: "The Security System could not establish a secured connection with the server ldap/<server name>. No authentication protocol was available." I've tried resetting the passwords on the DHCP and DNS services on the failing servers. I've tried auditing all accounts to see which one is getting a failed login, but no accounts correspond with the timing of the LDAP failure. Any suggestions on how to fix? Thanks~!
Guest Elliott Gaskill Posted October 25, 2007 Posted October 25, 2007 Re: Weird LDAP Errors... Tried many things. Blarneystone <BradIsaac@gmail.com> wrote: > I am helping my new client fix a number of networking problems on > their 2K3 network. > > One of the issues, that has been plaguing them for months is the LDAP > error event ID 40960: >>>The Security System detected an authentication error for the server LDAP/ <servername@domain...>. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information.<<< > > Similarly, they get an error: EVENT LOG System > EVENT TYPE Warning > SOURCE LSASRV > CATEGORY SPNEGO (Negotiator) > EVENT ID 40960 > The Security System detected an authentication error for the server > LDAP/<server name>. The failure code from authentication protocol > Kerberos was "The attempted logon is invalid. This is either due to a > bad username or authentication information. > (0xc000006d)". > > > And: "The Security System could not establish a secured connection > with the server ldap/<server name>. No authentication protocol was > available." > > I've tried resetting the passwords on the DHCP and DNS services on the > failing servers. I've tried auditing all accounts to see which one is > getting a failed login, but no accounts correspond with the timing of > the LDAP failure. > > Any suggestions on how to fix? > > Thanks~! > > Nice big list of things to try: http://www.eventid.net/display.asp?eventid=40960&eventno=787&source=LsaSrv&phase=1 or maybe this is the reason why: http://support.microsoft.com/kb/823712 -- Elliott Gaskill IT Director ADx, Inc.
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