Event ID 675

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Event ID 675 – Pre-authentication failed

Event Type: Failure Audit
Event Source: Security
Event Category: Account Logon
Event ID: 675
Computer: xxx
Description:
Pre-authentication failed:
User Name: xxx
User ID: xxxx\yyyy
Service Name: xxxx\xxxx
Pre-Authentication Type: 0x##
Failure Code: ##
Client Address: IP address

Error Code	Cause
6	The username doesn’t exist.
12	Workstation restriction; logon time restriction.
18	Account disabled, expired, or locked out.
23	The user’s password has expired.
24	Pre-authentication failed; usually means bad password
32	Ticket expired. This is a normal event that get frequently logged by computer accounts.
37	The workstation’s clock is too far out of synchronization with the DC’s clock.

Case 1: An Intern user account is expired.

Case 2: The user tried to logon after he was fired and the account was disabled.

Case 3: The password for the IWAM_ServerName account was changed, which didn’t match the IIS metabase.

Case 4: The logon time restriction rejects a user logon at evening.

Case 5: The user types incorrect password..

Case 6: The user changed the password in his desktop while his laptop connect to the domain TS using.

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