IIS: WWW Server

Event	Title	Channel	Sample	Rule
1	W3CGIFActivityTimeout	ETW Trace	N	N
2	W3CGIFRequestTimeout	ETW Trace	N	N
3	W3CGIFUnexpectedExit	ETW Trace	N	N
4	W3CGIFRapidFailureProtection	ETW Trace	N	N
5	W3CGIFPathNotFound	ETW Trace	N	N
6	W3CGIFScriptProcessorMissing	ETW Trace	N	N
7	W3CGIFAddJobObjectFail	ETW Trace	N	N
8	W3CGIFAppMgrShutdown	ETW Trace	N	N
9	W3CGIFQueueFull	ETW Trace	N	N
10	W3CGIFUnknownError	ETW Trace	N	N
11	W3CGIFResponseWritten	ETW Trace	N	N
12	W3CGIFWaitingForResponse	ETW Trace	N	N
13	W3CGIFTraceError	ETW Trace	N	N
14	W3CGIFTraceWarning	ETW Trace	N	N
15	W3CGIFTraceInfo	ETW Trace	N	N
16	W3CGIFQueueRequest	ETW Trace	N	N
17	W3CGIFAssignProcess	ETW Trace	N	N
18	W3CGIFStart	ETW Trace	N	N
19	W3CGIFEnd	ETW Trace	N	N
20	W3AuthPassportLogonFailed	ETW Trace	N	N
21	W3AuthSSPILogonFailed	ETW Trace	N	N
22	W3AuthNTLMNullSession	ETW Trace	N	N
23	W3AuthSSPIContinueNeeded	ETW Trace	N	N
24	W3AuthAnonPasswdChangeNeeded	ETW Trace	N	N
25	W3FilterLogStart	ETW Trace	N	N
26	W3FilterLogEnd	ETW Trace	N	N
27	W3AuthRequestAuthType	ETW Trace	N	N
28	W3AuthEnd	ETW Trace	N	N
29	W3FilterAccessDeniedStart	ETW Trace	N	N
30	W3FilterAccessDeniedEnd	ETW Trace	N	N
31	W3FilterSetReqHeader	ETW Trace	N	N
32	W3FilterAddReqHeader	ETW Trace	N	N
33	W3FilterSetRespHeader	ETW Trace	N	N
34	W3FilterAddRespHeader	ETW Trace	N	N
35	W3GeneralFlushResponseStart	ETW Trace	N	N
36	W3GeneralFlushResponseEnd	ETW Trace	N	N
37	W3GeneralReadEntityStart	ETW Trace	N	N
38	W3GeneralReadEntityEnd	ETW Trace	N	N
39	IISGeneralFileChangeNotification	ETW Trace	N	N
40	IISGeneralConfigChangeNotification	ETW Trace	N	N
41	IISGeneralVirtualModuleUnresolved	ETW Trace	N	N
42	IISGeneralUrlChanged	ETW Trace	N	N
43	IISGeneralHandlerChanged	ETW Trace	N	N
44	IISGeneralUserSet	ETW Trace	N	N
45	IISGeneralModulePreconditionNotMatch	ETW Trace	N	N
46	IISGeneralHandlerPreconditionNotMatch	ETW Trace	N	N
47	W3GeneralResponseHeaders	ETW Trace	N	N
48	W3GeneralResponseEntityFile	ETW Trace	N	N
49	W3GeneralResponseEntityBuffer	ETW Trace	N	N
50	W3GeneralRequestHeaders	ETW Trace	N	N
51	W3GeneralRequestEntity	ETW Trace	N	N
52	W3GeneralNotSendCustomError	ETW Trace	N	N
53	W3GeneralSetRequestHeader	ETW Trace	N	N
54	W3GeneralModuleFactoryFailed	ETW Trace	N	N
55	W3AuthKerberosFailed	ETW Trace	N	N
56	W3GeneralSetResponseHeader	ETW Trace	N	N
57	W3GeneralSetResponseTrailer	ETW Trace	N	N

Event ID 1: W3CGIFActivityTimeout

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`SiteId` mof:UInt32
`AppPoolId` mof:String
`ConnId` mof:UInt64
`RawConnId` mof:UInt64
`RequestURL` mof:String
`RequestVerb` mof:String

Event ID 2: W3CGIFRequestTimeout

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Notification` mof:UInt32
`fIsPostNotificationEvent` mof:Boolean
`NotificationStatus` mof:UInt32

Event ID 3: W3CGIFUnexpectedExit

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Notification` mof:UInt32
`fIsPostNotificationEvent` mof:Boolean
`CompletionBytes` mof:UInt32
`ErrorCode` mof:UInt32

Event ID 4: W3CGIFRapidFailureProtection

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Data1` mof:String
`Data2` mof:String
`ErrorCode` mof:UInt32

Event ID 5: W3CGIFPathNotFound

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ErrorCode` mof:UInt32
`OriginalFileName` mof:String
`OriginalFileSize` mof:UInt32
`CompressedFileName` mof:String
`CompressedFileSize` mof:UInt32

Event ID 6: W3CGIFScriptProcessorMissing

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Data1` mof:String
`Data2` mof:String
`ErrorCode` mof:UInt32

Event ID 7: W3CGIFAddJobObjectFail

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Data1` mof:String
`Data2` mof:String
`ErrorCode` mof:UInt32

Event ID 8: W3CGIFAppMgrShutdown

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ErrorCode` mof:UInt32

Event ID 9: W3CGIFQueueFull

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`DataType` mof:UInt32
`DataSize` mof:UInt32

Event ID 10: W3CGIFUnknownError

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`FileName` mof:String
`UserName` mof:String
`DomainName` mof:String

Event ID 11: W3CGIFResponseWritten

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Successful` mof:Boolean
`FileFromCache` mof:Boolean
`FileAddedToCache` mof:Boolean
`FileDirmoned` mof:Boolean
`LastModCheckErrorIgnored` mof:Boolean
`ErrorCode` mof:UInt32
`LastModifiedTime` mof:String

Event ID 12: W3CGIFWaitingForResponse

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ErrorCode` mof:UInt32

Event ID 13: W3CGIFTraceError

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`PhysicalPath` mof:String
`URLInfoFromCache` mof:Boolean
`URLInfoAddedToCache` mof:Boolean
`ErrorCode` mof:UInt32

Event ID 14: W3CGIFTraceWarning

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HttpsysCacheable` mof:Boolean
`Reason` mof:UInt32
`CachePolicy` mof:UInt32
`TimeToLive` mof:UInt32

Event ID 15: W3CGIFTraceInfo

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`OrigURL` mof:String
`OrigPath` mof:String
`AccessPerms` mof:UInt32
`MatchingPath` mof:UInt32
`MatchingURL` mof:UInt32
`ScriptMapEntry` mof:String

Event ID 16: W3CGIFQueueRequest

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Notification` mof:UInt32
`HttpStatus` mof:UInt32
`HttpReason` mof:String
`HttpSubStatus` mof:UInt16
`ErrorCode` mof:UInt32
`ConfigExceptionInfo` mof:String

Event ID 17: W3CGIFAssignProcess

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`Notification` mof:UInt32
`HttpStatus` mof:UInt32
`HttpReason` mof:String

Event ID 18: W3CGIFStart

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`FinalUserName` mof:String
`PasswordChanged` mof:Boolean

Event ID 19: W3CGIFEnd

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ErrorCode` mof:UInt32

Event ID 20: W3AuthPassportLogonFailed

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`FileName` mof:String
`UserName` mof:String
`DomainName` mof:String

Event ID 21: W3AuthSSPILogonFailed

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HttpStatus` mof:UInt32

Event ID 22: W3AuthNTLMNullSession

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 23: W3AuthSSPIContinueNeeded

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`PackageName` mof:String

Event ID 24: W3AuthAnonPasswdChangeNeeded

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 25: W3FilterLogStart

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`OrigClientHostName` mof:String
`OrigClientUserName` mof:String
`OrigServerName` mof:String
`OrigOperation` mof:String
`OrigTarget` mof:String
`OrigParameters` mof:String
`OrigHttpStatus` mof:UInt32
`OrigWin32Status` mof:UInt32

Event ID 26: W3FilterLogEnd

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`FinalClientHostName` mof:String
`FinalClientUserName` mof:String
`FinalServerName` mof:String
`FinalOperation` mof:String
`FinalTarget` mof:String
`FinalParameters` mof:String
`FinalHttpStatus` mof:UInt32
`FinalWin32Status` mof:UInt32

Event ID 27: W3AuthRequestAuthType

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`RequestAuthType` mof:UInt32

Event ID 28: W3AuthEnd

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 29: W3FilterAccessDeniedStart

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`RequestedURL` mof:String
`PhysicalPath` mof:String
`DenialReason` mof:UInt32

Event ID 30: W3FilterAccessDeniedEnd

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`PhysicalPath` mof:String
`AccessPerms` mof:UInt32

Event ID 31: W3FilterSetReqHeader

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`SiteId` mof:UInt32
`RequestURL` mof:String
`RequestVerb` mof:String
`RecursiveLevel` mof:UInt32

Event ID 32: W3FilterAddReqHeader

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`BytesSent` mof:UInt32
`HttpStatus` mof:UInt32
`HttpSubStatus` mof:UInt16

Event ID 33: W3FilterSetRespHeader

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HttpStatus` mof:UInt32
`HttpSubStatus` mof:UInt16
`FileNameOrURL` mof:String

Event ID 34: W3FilterAddRespHeader

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HeaderName` mof:String
`HeaderValue` mof:String

Event ID 35: W3GeneralFlushResponseStart

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 36: W3GeneralFlushResponseEnd

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`BytesSent` mof:UInt32
`ErrorCode` mof:UInt32

Event ID 37: W3GeneralReadEntityStart

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 38: W3GeneralReadEntityEnd

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`BytesReceived` mof:UInt32
`ErrorCode` mof:UInt32

Event ID 39: IISGeneralFileChangeNotification

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`FilePath` mof:String

Event ID 40: IISGeneralConfigChangeNotification

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ConfigPath` mof:String

Event ID 41: IISGeneralVirtualModuleUnresolved

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Name` mof:String
`Type` mof:String

Event ID 42: IISGeneralUrlChanged

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`OldUrl` mof:String
`NewUrl` mof:String

Event ID 43: IISGeneralHandlerChanged

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`OldHandlerName` mof:String
`NewHandlerName` mof:String
`NewHandlerModules` mof:String
`NewHandlerScriptProcessor` mof:String
`NewHandlerType` mof:String

Event ID 44: IISGeneralUserSet

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`AuthType` mof:String
`UserName` mof:String
`SupportsIsInRole` mof:Boolean

Event ID 45: IISGeneralModulePreconditionNotMatch

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Name` mof:String
`Precondition` mof:String

Event ID 46: IISGeneralHandlerPreconditionNotMatch

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Name` mof:String
`Precondition` mof:String

Event ID 47: W3GeneralResponseHeaders

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Headers` mof:String

Event ID 48: W3GeneralResponseEntityFile

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`FileName` mof:String
`Offset` mof:UInt64
`Size` mof:UInt64

Event ID 49: W3GeneralResponseEntityBuffer

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Buffer` mof:String

Event ID 50: W3GeneralRequestHeaders

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Headers` mof:String

Event ID 51: W3GeneralRequestEntity

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Buffer` mof:String

Event ID 52: W3GeneralNotSendCustomError

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`Reason` mof:UInt32

Event ID 53: W3GeneralSetRequestHeader

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HeaderName` mof:String
`HeaderValue` mof:String
`Replace` mof:Boolean

Event ID 54: W3GeneralModuleFactoryFailed

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`ModuleName` mof:String
`ErrorCode` mof:UInt32

Event ID 55: W3AuthKerberosFailed

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`KMUsed` mof:Boolean
`APUserName` mof:String
`SPNName` mof:String
`ADConfigIsOK` mof:Boolean
`KerberosInfo` mof:String

Event ID 56: W3GeneralSetResponseHeader

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HeaderName` mof:String
`HeaderValue` mof:String
`Replace` mof:Boolean

Event ID 57: W3GeneralSetResponseTrailer

Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object
`HeaderName` mof:String
`HeaderValue` mof:String
`Replace` mof:Boolean

Provenance

ETW provider GUID {3A2A4E84-4C21-4981-AE10-3FDA0D9B0F83}

WS2025-26100.0, schema read from the WMI MOF class, captured 2026-02-26
Taken from Windows installation media (build 26100.1), not a patched system, so the exact update level is unknown.
WS2022-20348.4893, schema read from the WMI MOF class, captured 2026-06-02
MOF class: IIS_Trace