Details
Product:Windows Operating System
Event ID:40960
Source:lsasrv
Version:5.2
Symbolic Name:NEGOTIATE_DOWNGRADE_DETECTED
Message:The Security System detected an authentication error for the server %1. The failure code from authentication protocol %2 was %3.
   
Explanation

The Local Security Authority (LSA) cannot complete the task because an authentication error occurred.

   
User Action

Use the error code in the message to determine the cause of the problem. For example, a STATUS_NO_LOGON_SERVER error code (0xC000005e) indicates that the domain controller was temporarily unavailable. For information on other error codes, perform a search of the Knowledge Base at Product Support Services.


Currently there are no Microsoft Knowledge Base articles available for this specific error or event message. For information about other support options you can use to find answers online, see http://support.microsoft.com/default.aspx.