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Microsoft-Windows-Security-Auditing › Event 4800

Event ID 4800 — The workstation was locked.

Provider
Microsoft-Windows-Security-Auditing
Channel
Security
Audit Policy
Logon/Logoff → Other Logon/Logoff Events
Collection Priority
Recommended (Palantir, others)
Opcode
Info

Description

The workstation was locked.

Message #

The workstation was locked.

Subject:
	Security ID: %1
	Account Name: %2
	Account Domain: %3
	Logon ID: %4
	Session ID: %5

Fields #

NameDescription
TargetUserSid SID[Subject] Security ID
TargetUserName UnicodeString[Subject] Account Name
TargetDomainName UnicodeString[Subject] Account Domain
TargetLogonId HexInt64[Subject] Logon ID
SessionId UInt32[Subject] Session ID
Security_ID SID[Subject] Security ID.
Account_Name UnicodeString[Subject] Account Name.
Account_Domain UnicodeString[Subject] Account Domain.
Logon_ID HexInt64[Subject] Logon ID.
Session_ID UInt32[Subject] Session ID.

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Security-Auditing",
    "guid": "54849625-5478-4994-A5BA-3E3B0328C30D",
    "event_source_name": "",
    "event_id": 4800,
    "version": 0,
    "level": 0,
    "task": 12551,
    "opcode": 0,
    "keywords": 9232379236109516800,
    "time_created": "2026-03-11T23:16:10.990860+00:00",
    "event_record_id": 2684980,
    "correlation": {
      "ActivityID": "FA744C8F-80A0-4DBD-B165-8D96568C15CC"
    },
    "execution": {
      "process_id": 720,
      "thread_id": 3756
    },
    "channel": "Security",
    "computer": "LAB-WIN11",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "TargetUserSid": "S-1-5-21-3407486967-1585450050-1838039599-1000",
    "TargetUserName": "localuser",
    "TargetDomainName": "LAB-WIN11",
    "TargetLogonId": "0x1b1557",
    "SessionId": 2
  },
  "message": ""
}

Detection Rules #

View all rules referencing this event →

Sigma # view in reference

  • Locked Workstation source informational: Detects locked workstation session events that occur automatically after a standard period of inactivity.

References #