Description

An instance of a background task with entry point TaskEntryPoint and name TaskName has been created in session UserContextId and given an ID of InstanceId.

Message #

An instance of a background task with entry point %2 and name %4 has been created in session %5 and given an ID of %6.

Fields #

Description

An instance of the background task with entry point EntryPoint running for user UserSid in session UserContextId returned with error code Result.

Message #

An instance of the background task with entry point %9 running for user %6 in session %3 returned with error code %5.

Fields #

Description

The background infrastructure service issued a proxy activation for the background task with ID WorkItemId.

Message #

The background infrastructure service issued a proxy activation for the background task with ID %1.

Fields #

Description

Background task for package PackageFullName with entry point EntryPoint was suspended due to CPU resource management policy.

Message #

Background task for package %1 with entry point %3 was suspended due to CPU resource management policy.

Fields #

Description

Background task for package PackageFullName with entry point EntryPoint was suspended due to Network resource management policy.

Message #

Background task for package %1 with entry point %3 was suspended due to Network resource management policy.

Fields #

Description

Background task for package PackageFullName with entry point EntryPoint did not complete in response to a cancel notification.

Message #

Background task for package %1 with entry point %3 did not complete in response to a cancel notification.

Fields #

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BrokerInfrastructure",
    "guid": "E6835967-E0D2-41FB-BCEC-58387404E25A",
    "event_source_name": "",
    "event_id": 6,
    "version": 0,
    "level": 4,
    "task": 100,
    "opcode": 102,
    "keywords": 4611686018427387905,
    "time_created": "2026-03-11T19:27:55.206435+00:00",
    "event_record_id": 445,
    "correlation": {},
    "execution": {
      "process_id": 1116,
      "thread_id": 5084
    },
    "channel": "Microsoft-Windows-BackgroundTaskInfrastructure/Operational",
    "computer": "LAB-WIN11",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "PackageFullName": "MicrosoftWindows.Client.CBS_1000.22634.1000.0_x64__cw5n1h2txyewy",
    "EntryPointLength": 38,
    "EntryPoint": "IrisService.BackgroundTask.UpdateTimer",
    "UserSid": "S-1-5-21-3407486967-1585450050-1838039599-1000"
  },
  "message": ""
}

Description

A signal request for the trigger with ID EventId and type EventType has begun.

Message #

A signal request for the trigger with ID %1 and type %2 has begun.

Fields #

Description

The signal request for the trigger with ID EventId and type EventType has completed.

Message #

The signal request for the trigger with ID %1 and type %2 has completed.

Fields #

Description

The condition with ID EventId and type EventType is changing state from OldState to NewState.

Message #

The condition with ID %1 and type %2 is changing state from %3 to %4.

Fields #

Description

The condition with ID EventId and type EventType has changed state from OldState to NewState.

Message #

The condition with ID %1 and type %2 has changed state from %3 to %4.

Fields #

Description

The application package PackageFullName running for user UserAccountName in session UserContextId is changing state to PackageState.

Message #

The application package %1 running for user %2 in session %3 is changing state to %4.

Fields #

Description

The application package PackageFullName running for user UserAccountName in session UserContextId has changed to state PackageState.

Message #

The application package %1 running for user %2 in session %3 has changed to state %4.

Fields #

Description

A background task with entry point TaskEntryPoint and name TaskName has been latched because its condition of type ConditionType has value ConditionValue but value ConditionDesiredValue was desired.

Message #

A background task with entry point %2 and name %4 has been latched because its condition of type %5 has value %6 but value %7 was desired.

Fields #

Description

A background task with entry point TaskEntryPoint and name TaskName has been unlatched.

Message #

A background task with entry point %2 and name %4 has been unlatched.

Fields #

Description

A background task with entry point TaskEntryPoint and name TaskName has been dropped.

Message #

A background task with entry point %2 and name %4 has been dropped.

Fields #

Description

An activation of a background task with entry point TaskEntryPoint and name TaskName has been buffered because an instance of the task is already running.

Message #

An activation of a background task with entry point %2 and name %4 has been buffered because an instance of the task is already running.

Fields #

Description

An activation of a background task with entry point TaskEntryPoint and name TaskName has been buffered because BufferingReason.

Message #

An activation of a background task with entry point %2 and name %4 has been buffered because %5.

Fields #

Description

An activation of a background task with entry point TaskEntryPoint and name TaskName that was buffered because BufferingReason has been unbuffered.

Message #

An activation of a background task with entry point %2 and name %4 that was buffered because %5 has been unbuffered.

Fields #

Description

An instance with ID InstanceId of a background task with entry point TaskEntryPoint and name TaskName has been canceled in session UserContextId.

Message #

An instance with ID %5 of a background task with entry point %2 and name %4 has been canceled in session %6.

Fields #

Description

A background task with entry point TaskEntryPoint and name TaskName has been unregistered because DeletionReason.

Message #

A background task with entry point %2 and name %4 has been unregistered because %5.

Fields #

Description

The background task with entry point TaskEntryPoint and name TaskName failed to activate with error code Result.

Message #

The background task with entry point %2 and name %4 failed to activate with error code %5.

Fields #

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BrokerInfrastructure",
    "guid": "E6835967-E0D2-41FB-BCEC-58387404E25A",
    "event_source_name": "",
    "event_id": 21,
    "version": 0,
    "level": 4,
    "task": 100,
    "opcode": 113,
    "keywords": 4611686018427387905,
    "time_created": "2026-03-12T02:57:25.195310+00:00",
    "event_record_id": 465,
    "correlation": {},
    "execution": {
      "process_id": 1116,
      "thread_id": 5364
    },
    "channel": "Microsoft-Windows-BackgroundTaskInfrastructure/Operational",
    "computer": "LAB-WIN11",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "EntryPointLength": 38,
    "TaskEntryPoint": "{8cfc164f-4be5-4fdd-94e9-e2af73ed4a19}",
    "NameLength": 28,
    "TaskName": "DashboardBackgroundFeedsTask",
    "Result": 2147746132
  },
  "message": ""
}

Fields #

Fields #

Fields #

Description

The application package PackageFullName was terminated due to inactivity. The following ActiveTaskCount background task(s) were running ActiveTasks.

Message #

The application package %5 was terminated due to inactivity. The following %3 background task(s) were running %7.

Fields #

Fields #

Description

A background task with entry point TaskEntryPoint and name TaskName in package PackageFullName is being canceled because it has an inactive instance running in session UserContextId.

Message #

A background task with entry point %2 and name %4 in package %5 is being canceled because it has an inactive instance running in session %7.

Fields #

Fields #

Fields #

Fields #

Fields #

Fields #

Fields #