Event ID: 4634

An account was logged off

An account was logged off.

Subject:
    Security ID:        %1
    Account Name:       %2
    Account Domain:     %3
    Logon ID:           %4

Logon Type:             %5

This event is generated when a logon session is destroyed. It may be positively correlated with a logon event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.
Microsoft Documentation

Event ID - 4634



This event shows that logon session was terminated and no longer exists.

The main difference between event 4647 (User initiated logoff) and event 4634 is that event 4647 is generated when a logoff procedure was initiated by specific account using the logoff function, whereas event 4634 shows that a session was terminated and no longer exists.

4647 is more typical for Interactive and RemoteInteractive logon types when user was logged off using standard methods. You will typically see both 4647 and 4634 events when logoff procedure was initiated by user.

It may be positively correlated with event 4624 (An account was successfully logged on) event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.



Name Field Insertion String OS Example
Security ID TargetUserSid %1 Any S-1-5-90-1
Account Name TargetUserName %2 Any UserName
Account Domain TargetDomainName %3 Any DOMAIN
Logon ID LogonID %4 Any 0x1a0992
Logon Type LogonType %5 Any View Codes


Lookup Audit Policy Configuration Settings

C:\> AuditPol.exe /get /subcategory:Logoff
How to enable Windows Auditing


Audit Category:
Logon/Logoff

Audit Subcategory:
Logoff
Legacy Events:
538

Correlated Events:
4624

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