IIS: WWW Isapi Extension

3 events across 1 channel

EventTitleChannelSample
1IsapiCallExtensionETW TraceN
2IsapiExtensionDoneETW TraceN
3IsapiNotifyCompletionETW TraceN

Event ID 1: IsapiCallExtension

#
Provider
IIS: WWW Isapi Extension
Channel
ETW Trace
Source
Trace

Fields #

NameDescription
ContextId mof:Object
DllName mof:String

Event ID 2: IsapiExtensionDone

#
Provider
IIS: WWW Isapi Extension
Channel
ETW Trace
Source
Trace

Fields #

NameDescription
ContextId mof:Object

Event ID 3: IsapiNotifyCompletion

#
Provider
IIS: WWW Isapi Extension
Channel
ETW Trace
Source
Trace

Fields #

NameDescription
ContextId mof:Object

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 {A1C2040E-8840-4C31-BA11-9871031A19EA}

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_IsapiTrace