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Security System detected an attempted downgrade attack - Account keeps getting locked out

Posted on 2006-07-11
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Last Modified: 2013-12-04
This user keeps getting locked out and I do not understand why. She has a black berry too. It gets locked out every couple of mins or so.


????


the event viewers are below. XP Pro w. xp2 and outlook 2003. exchage 2003
Event Type:      Warning
Event Source:      LSASRV
Event Category:      SPNEGO (Negotiator)
Event ID:      40960
Date:            7/11/2006
Time:            9:06:15 AM
User:            N/A
Computer:      ACM-XP003
Description:
The Security System detected an attempted downgrade attack for server exchangeMDB/mail.xxx.com.  The failure code from authentication protocol Kerberos was "The user account has been automatically locked because too many invalid logon attempts or password change attempts have been requested.
 (0xc0000234)".

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

----------------------------------------------------------------------------------------------------------------------------==
Event Type:      Warning
Event Source:      LSASRV
Event Category:      SPNEGO (Negotiator)
Event ID:      40961
Date:            7/11/2006
Time:            9:06:15 AM
User:            N/A
Computer:      ACM-XP003
Description:
The Security System could not establish a secured connection with the server exchangeMDB/mail.xxx.com.  No authentication protocol was available.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Question by:ctechsol
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Author Comment

by:ctechsol
ID: 17081733
user was logged on to two different computers at the same time. it happens after a user has changed the password but has not logged off from previous computers using the old password.
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