Event Details
User Activity->Logons->Failed Logons->Windows 2008->EventID 4777 - The domain controller failed to validate the credentials for an account.
EventID 4777 - The domain controller failed to validate the credentials for an account.
Currently this event doesn’t generate. It is a defined event, but it is never invoked by the operating system. 4776 failure event is generated instead.
 Sample: 
        The domain controller failed to validate the credentials for an account.

        Authentication Package:	%1
        Logon Account:	%2
        Source Workstation:	%3
        Error Code:	%4
Log Type: Windows Event Log
 Uniquely Identified By:
Log Name: Security
Filtering Field Equals to Value
OSVersion Windows Vista (2008)
Windows 7 (2008 R2)
Windows 8 (2012)
Windows 8.1 (2012 R2)
Windows 10 (2016)
Category Account Logon
Source Microsoft-Windows-Security-Auditing
TaskCategory Credential Validation
EventId 4777
Field Matching
FieldDescriptionStored inSample Value
When At what date and time a user activity originated in the system. DateTime
Who Account or user name under which the activity occured. Logon Account
What The type of activity occurred (e.g. Logon, Password Changed, etc.) "NTLM Authentication" NTLM Authentication
Where The name of the workstation/server where the activity was logged. Computer
Where From The name of the workstation/server where the activity was initiated from. Source Workstation
Severity Specify the seriousness of the event. "High" High
WhoDomain -
WhereDomain -
Result Successful or Failed. "Failed" Failed
Failure Reason Failure Reason - Bad user name or password, not enough privileges, etc. Error Code
Error Code InsertionString4
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