Windows Security Log Events by ID: Event ID 529

Windows Security Log Events by ID

look up more events by Event ID or Category

Event ID

529

Title

Logon Failure - Unknown user name or bad password

Type:

Example:

Randy's Comments:

Failure

OS:

All versions

Category:

Logon/Logoff

Logon Failure
Reason: Unknown user name or bad password
User Name: %1 Domain: %2
Logon Type: %3 Logon Process: %4
Authentication Package: %5 Workstation Name: %6

Windows Server 2003 adds these fields:

Caller User Name:-
Caller Domain:-
Caller Logon ID:-
Caller Process ID:-
Transited Services:-
Source Network Address:10.42.42.180
Source Port:0

Event 529 is logged on the workstation or server where the user failed to log on. To determine if the user was present at this computer or elsewhere on the network, see Logon Types. Event 529 is logged on a domain controller only when a user fails to log on to the domain controller itself (such at the console or through failure to connect to a shared folder). On workstations and servers, event 529 can be generated by an attempt to log on with a domain or local SAM account. In the latter case, there will be a corresponding failure event from the Account Logon category.

To identify the source of network logon failures ,check the Workstation Name and Source Network Address fields.

Logon Process and Authentication Package will vary according to the type of logon and authentication protocol used.

Windows Security Log Events by ID

529

Logon Failure - Unknown user name or bad password

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