IIS: WWW Server

57 events across 1 channel

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

Event ID 1: W3CGIFActivityTimeout

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 9: W3CGIFQueueFull

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 10: W3CGIFUnknownError

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 11: W3CGIFResponseWritten

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 13: W3CGIFTraceError

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 19: W3CGIFEnd

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 20: W3AuthPassportLogonFailed

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 21: W3AuthSSPILogonFailed

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 22: W3AuthNTLMNullSession

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 23: W3AuthSSPIContinueNeeded

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 24: W3AuthAnonPasswdChangeNeeded

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 25: W3FilterLogStart

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 28: W3AuthEnd

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 29: W3FilterAccessDeniedStart

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 30: W3FilterAccessDeniedEnd

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 31: W3FilterSetReqHeader

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 33: W3FilterSetRespHeader

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 34: W3FilterAddRespHeader

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 35: W3GeneralFlushResponseStart

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 36: W3GeneralFlushResponseEnd

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 37: W3GeneralReadEntityStart

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

Name	Description
`ContextId` mof:Object

Event ID 38: W3GeneralReadEntityEnd

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 39: IISGeneralFileChangeNotification

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 40: IISGeneralConfigChangeNotification

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 41: IISGeneralVirtualModuleUnresolved

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 42: IISGeneralUrlChanged

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 43: IISGeneralHandlerChanged

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 45: IISGeneralModulePreconditionNotMatch

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 46: IISGeneralHandlerPreconditionNotMatch

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 47: W3GeneralResponseHeaders

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 48: W3GeneralResponseEntityFile

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 49: W3GeneralResponseEntityBuffer

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 50: W3GeneralRequestHeaders

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 51: W3GeneralRequestEntity

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 52: W3GeneralNotSendCustomError

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 53: W3GeneralSetRequestHeader

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 54: W3GeneralModuleFactoryFailed

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 55: W3AuthKerberosFailed

Provider: IIS: WWW Server
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

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Event ID 57: W3GeneralSetResponseTrailer

Provider: IIS: WWW Server
Channel: ETW Trace
Source: Trace

Fields #

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

Provenance

Where this provider's schema came from, and which Windows build it was observed on. Windows can change a provider's event schema between builds, so use this to judge whether it matches the build you collect from.

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

Observed on:

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

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)