Solved

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

Posted on 2006-07-11
3
9,853 Views
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.
0
Comment
Question by:ctechsol
3 Comments
 

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.
0
 
LVL 5

Accepted Solution

by:
Netminder earned 0 total points
ID: 17118360
Closed, 500 points refunded.
Netminder
Site Admin
0

Featured Post

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Users of Windows 10 Professional can disable automatic reboots using the policy editor. This tool is not included in the Windows home edition. But don't worry! Follow the instructions below to install (a Win7) policy editor on your Windows 10 Home e…
Recently, I read that Microsoft has analysed statistics for their security intelligence report. It revealed: still, the clear majority of windows users do their daily work as administrator. An administrative account is a burden, security-wise. My ar…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

735 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question