Microsoft-Windows-Windows Defender › Event 2001

Event ID 2001 — Product Name has encountered an error trying to update security intelligence.

Provider
Microsoft-Windows-Windows Defender
Channel
Operational
Level
Error
Collection Priority
Recommended (Microsoft-Defender, others)

Description

Product Name has encountered an error trying to update security intelligence.

Message #

%1 has encountered an error trying to update security intelligence.
 	New security intelligence Version: %3
 	Previous security intelligence Version: %4
 	Update Source: %6
 	Security intelligence Type: %12
 	Update Type: %14
 	User: %8\%9
 	Current Engine Version: %15
 	Previous Engine Version: %16
 	Error code: %17
 	Error description: %18

Fields #

NameDescription
Product Name
Product Version
Current security intelligence Version
Previous security intelligence Version
Update Source Index
Update Source
Unused UnicodeString
Domain UnicodeString
User UnicodeString
SID UnicodeString
Security intelligence Type Index
Security intelligence Type
Update Type Index
Update Type
Current Engine Version
Previous Engine Version
Error Code
Error Description
Update State Index
Update State
Source Path
ProductName UnicodeString
ProductVersion UnicodeString
CurrentsecurityintelligenceVersion UnicodeString
PrevioussecurityintelligenceVersion UnicodeString
UpdateSourceIndex UnicodeString
UpdateSource UnicodeString
SecurityintelligenceTypeIndex UnicodeString
SecurityintelligenceType UnicodeString
UpdateTypeIndex UnicodeString
UpdateType UnicodeString
CurrentEngineVersion UnicodeString
PreviousEngineVersion UnicodeString
ErrorCode UnicodeString
ErrorDescription UnicodeString
UpdateStateIndex UnicodeString
UpdateState UnicodeString
SourcePath UnicodeString

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Windows Defender",
    "guid": "11CD958A-C507-4EF3-B3F2-5FD9DFBD2C78",
    "event_source_name": "",
    "event_id": 2001,
    "version": 0,
    "level": 2,
    "task": 0,
    "opcode": 0,
    "keywords": 9223372036854775808,
    "time_created": "2026-03-09T01:17:06.846703+00:00",
    "event_record_id": 1315,
    "correlation": {
      "ActivityID": "4BE4BD99-4F61-4990-9CE4-215B5E5A9104"
    },
    "execution": {
      "process_id": 3728,
      "thread_id": 5300
    },
    "channel": "Microsoft-Windows-Windows Defender/Operational",
    "computer": "LAB-WIN11",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "Product Name": "Microsoft Defender Antivirus",
    "Product Version": "4.18.26010.5",
    "Current security intelligence Version": "",
    "Previous security intelligence Version": "1.445.426.0",
    "Update Source Index": "7",
    "Update Source": "Microsoft Update Server",
    "Unused": "",
    "Domain": "NT AUTHORITY",
    "User": "SYSTEM",
    "SID": "S-1-5-18",
    "Security intelligence Type Index": "1",
    "Security intelligence Type": "AntiVirus",
    "Update Type Index": "1",
    "Update Type": "Full",
    "Current Engine Version": "",
    "Previous Engine Version": "1.1.26010.1",
    "Error Code": "0x8007045b",
    "Error Description": "A system shutdown is in progress. ",
    "Update State Index": "1",
    "Update State": "Search",
    "Source Path": "Default URL"
  },
  "message": ""
}

References #