A list of the most common / useful Windows Event IDs.
Event Log
Source
EventID
Description
Security
Security
4608
Windows NT is starting up.
Security
Security
4609
Windows is shutting down.
Security
USER32
1074
The process nnn has initiated the restart of computer.
Security
Security
4610
An authentication package has been loaded by the Local Security Authority.
Security
Security
4611
A trusted logon process has registered with the Local Security Authority.
Security
Security
4612
Internal resources allocated for the queuing of audit messages
have been exhausted, leading to the loss of some audits.
Security
Security
4614
A notification package has been loaded by the Security Account Manager.
Security
Security
4615
A process is using an invalid local procedure call (LPC) port.
Security
Security
4616
The system time was changed.
Security
Security(Logon/Logoff)
4624
Successful Logon.
Security
Security(Logon/Logoff)
4625
Logon Failure - Unknown user name or bad password. / logon time restriction / Account disabled/expired / not been granted the requested logon type / password has expired / Account locked out
Security
Security(Logon/Logoff)
4634
User Logoff.
Security
Security(Logon/Logoff)
4646
IKE DoS-prevention mode started.
Security
Security(Logon/Logoff)
4647
User initiated log out.
Security
Security(Logon/Logoff)
4648
A logon was attempted using explicit credentials.
Security
Security(Logon/Logoff)
4649
A replay attack was detected.
Security
Security(Logon/Logoff)
4697
A service was installed in the system.
Security
Object access
4698
A scheduled task was created.
Security
Object access
4699
A scheduled task was deleted.
Security
Object access
4700
A scheduled task was enabled.
Security
Object access
4701
A scheduled task was disabled.
Security
Object access
4702
A scheduled task was updated.
Security
Account Management
4720
User Account Created.
Security
Account Management
4722
User Account Enabled.
Security
Account Management
4723
Change Password Attempt.
Security
Account Management
4724
User Account password set.
Security
Account Management
4725
User Account Disabled.
Security
Account Management
4726
User Account Deleted.
Security
Account Management
4732
Local User Account Created.
Security
Account Management
4738
User Account Changed.
Security,
Account Management
4739
Domain Policy Changed.
Security
Account Management
4740
User Account Locked Out.
Security
Account Management
4741
Computer Account Created.
Security
Account Management
4742
Computer Account Changed.
Security
Account Management
4743
Computer Account Deleted.
Security
Account Management
4767
A user account was unlocked.
Security
Security(Logon/Logoff)
4774
An account was mapped for logon.
Security
Security(Logon/Logoff)
4775
The name: %2 could not be mapped for logon by: %1
Security
Security(Logon/Logoff)
4776
Account Used for Logon by.
Security
Security(Logon/Logoff)
4777
The logon to account: %2 by: %1 from workstation: %3 failed.
Security
Security(Logon/Logoff)
4778
Session reconnected to winstation.
Security
Security(Logon/Logoff)
4779
Session disconnected from winstation.
Security
Security(Logon/Logoff)
4800
The workstation was locked.
Security
Security(Logon/Logoff)
4801
The workstation was unlocked.
Security
Security(Logon/Logoff)
4802
The screen saver was invoked.
Security
Security(Logon/Logoff)
4803
The screen saver was dismissed.
System
EventLog
6005
The event log was started.
System
EventLog
6006
The Event log service was stopped.
System
EventLog
6013
System uptime.
System
EventLog
1102
The audit log was cleared.
System
EventLog
1104
The security Log is now full.
System
EventLog
1105
Event log automatic backup.
System
EventLog
1108
The event logging service encountered an error.
System
Service Control Manager
7035
The nnn service was successfully sent a start/Stop control.
System
Service Control Manager
7036
The nnn service entered the Running/Stopped state.
System
W32Time
29
The time provider NtpClient is configured to acquire time from
one or more time sources; however none of the sources are currently accessible.
System
W32Time
38
The time provider NtpClient cannot reach or is currently receiving invalid time data.
System
W32Time
47
Time Provider NtpClient: No valid response received.
All sign in and log out events include a Logon Type code, to give the precise type of logon or logoff.
Use these Event IDs in Windows Event Viewer to filter for specific events. When working with Event IDs it can be important to specify the source in addition to the ID, the same number can have different meanings in different logs from different sources.
Prior to Windows Vista many security event IDs were different, for most events: New EventId = Old Pre-Vista EventId + 4096
“Early in life I had noticed that no event is ever correctly reported in a newspaper” ~ George Orwell
Logon Types - Windows Logon types.
Technet - Event Log Policy Settings (Size/Retention)