Microsoft-Windows-Devices-Background

16 events across 2 channels

Event	Title	Channel	Sample
1	Application requested task TriggerID to service device Device.	System	N
2	Task TriggerID started servicing device Device (process TaskProcessID).	System	N
3	Task TriggerID canceled servicing of device Device because: Reason.	System	N
4	Task TriggerID finished servicing device Duration.	System	N
5	Task TriggerID request was denied.	System	N
6	Task TriggerID request failed.	System	N
10	Application requested task TriggerID to access device to access device Device.	System	N
11	Task TriggerID started accessing device Device (process TaskProcessID).	System	N
12	Task TriggerID canceled access of device Device because: Reason.	System	N
13	Task TriggerID finished accessing device Duration.	System	N
14	Task TriggerID request was denied.	System	N
15	Task TriggerID request failed.	System	N
20	DeviceTriggerPerformanceStart	Operational	N
21	DeviceTriggerPerformanceStop	Operational	N
22	DeviceTriggerPerformanceStop22	Operational	N
30	Package packageName is attempting to associate with aepId.	Operational	N

Event ID 1: Application requested task TriggerID to service device Device.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddeviceservicing/updatetask
Opcode: Start

Description

Application requested task TriggerID to service device Device.

Message #

%2 requested task %1 to service device %4.

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString

Event ID 2: Task TriggerID started servicing device Device (process TaskProcessID).

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddeviceservicing/updatetask

Description

Task TriggerID started servicing device Device (process TaskProcessID).

Message #

Task %1 started servicing device %3 (process %2).

Fields #

Name	Description
`TriggerID` GUID
`TaskProcessID` Int32
`Device` UnicodeString

Event ID 3: Task TriggerID canceled servicing of device Device because: Reason.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddeviceservicing/updatetask
Opcode: Stop

Description

Task TriggerID canceled servicing of device Device because: Reason.

Message #

Task %1 canceled servicing of device %3 because: %2.

Fields #

Name	Description
`TriggerID` GUID
`Reason` UInt32
`Device` UnicodeString

Event ID 4: Task TriggerID finished servicing device Duration.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddeviceservicing/updatetask
Opcode: Stop

Description

Task TriggerID finished servicing device Duration.

Message #

Task %1 finished servicing device %2.

Fields #

Name	Description
`TriggerID` GUID
`Duration` Int32

Event ID 5: Task TriggerID request was denied.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddeviceservicing/updatetask
Opcode: Stop

Description

Task TriggerID request was denied. Application cannot service device Device because: Reason.

Message #

Task %1 request was denied.  %2 cannot service device %4 because: %7.

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString
`Reason` UInt32
`Error` Int32

Event ID 6: Task TriggerID request failed.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddeviceservicing/updatetask
Opcode: Stop

Description

Task TriggerID request failed. Application cannot service Device because: Error.

Message #

Task %1 request failed.  %2 cannot service %4 because: %7.

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString
`Error` Int32

Event ID 10: Application requested task TriggerID to access device to access device Device.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddevicebackgroundtask
Opcode: Start

Description

Application requested task TriggerID to access device to access device Device.

Message #

%2 requested task %1 to access device to access device %4.

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString

Event ID 11: Task TriggerID started accessing device Device (process TaskProcessID).

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddevicebackgroundtask

Description

Task TriggerID started accessing device Device (process TaskProcessID).

Message #

Task %1 started accessing device %3 (process %2).

Fields #

Name	Description
`TriggerID` GUID
`TaskProcessID` Int32
`Device` UnicodeString

Event ID 12: Task TriggerID canceled access of device Device because: Reason.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddevicebackgroundtask
Opcode: Stop

Description

Task TriggerID canceled access of device Device because: Reason.

Message #

Task %1 canceled access of device %3 because: %2.

Fields #

Name	Description
`TriggerID` GUID
`Reason` UInt32
`Device` UnicodeString

Event ID 13: Task TriggerID finished accessing device Duration.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddevicebackgroundtask
Opcode: Stop

Description

Task TriggerID finished accessing device Duration.

Message #

Task %1 finished accessing device %2.

Fields #

Name	Description
`TriggerID` GUID
`Duration` Int32

Event ID 14: Task TriggerID request was denied.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddevicebackgroundtask
Opcode: Stop

Description

Task TriggerID request was denied. Application cannot access device Device in the background because: Reason.

Message #

Task %1 request was denied.  %2 cannot access device %4 in the background because: %7.

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString
`Reason` UInt32
`Error` Int32

Event ID 15: Task TriggerID request failed.

Provider: Microsoft-Windows-Devices-Background
Channel: System
Task: Applicationinitiateddevicebackgroundtask
Opcode: Stop

Description

Task TriggerID request failed. Application cannot access device Device in the background because: Error.

Message #

Task %1 request failed.  %2 cannot access device %4 in the background because: %7.

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString
`Error` Int32

Event ID 20: DeviceTriggerPerformanceStart

Provider: Microsoft-Windows-Devices-Background
Channel: Operational
Task: DeviceTriggerPerformance
Opcode: Start

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString

Event ID 21: DeviceTriggerPerformanceStop

Provider: Microsoft-Windows-Devices-Background
Channel: Operational
Task: DeviceTriggerPerformance
Opcode: Stop

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString

Event ID 22: DeviceTriggerPerformanceStop22

Provider: Microsoft-Windows-Devices-Background
Channel: Operational
Task: DeviceTriggerPerformance
Opcode: Stop

Fields #

Name	Description
`TriggerID` GUID
`Application` UnicodeString
`TaskType` UInt32
`Device` UnicodeString
`HardwareId` UnicodeString
`Arguments` UnicodeString

Event ID 30: Package packageName is attempting to associate with aepId.

Provider: Microsoft-Windows-Devices-Background
Channel: Operational
Task: DeviceAttemptAssociationAudit

Description

Package packageName is attempting to associate with aepId.

Message #

Package %1 is attempting to associate with %2

Fields #

Name	Description
`packageName` UnicodeString
`aepId` UnicodeString

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 64ef2b1c-4ae1-4e64-8599-1636e441ec88

Defined in deviceaccess.dll, which carries the event manifest.

Observed on:

WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.3692, captured 2026-06-02
Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.5074, captured 2026-06-02

`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)

Microsoft-Windows-Devices-Background

Event ID 1: Application requested task TriggerID to service device Device.

Description

Message #

Fields #

Event ID 2: Task TriggerID started servicing device Device (process TaskProcessID).

Description

Message #

Fields #

Event ID 3: Task TriggerID canceled servicing of device Device because: Reason.

Description

Message #

Fields #

Event ID 4: Task TriggerID finished servicing device Duration.

Description

Message #

Fields #

Event ID 5: Task TriggerID request was denied.

Description

Message #

Fields #

Event ID 6: Task TriggerID request failed.

Description

Message #

Fields #

Event ID 10: Application requested task TriggerID to access device to access device Device.

Description

Message #

Fields #

Event ID 11: Task TriggerID started accessing device Device (process TaskProcessID).

Description

Message #

Fields #

Event ID 12: Task TriggerID canceled access of device Device because: Reason.

Description

Message #

Fields #

Event ID 13: Task TriggerID finished accessing device Duration.

Description

Message #

Fields #

Event ID 14: Task TriggerID request was denied.

Description

Message #

Fields #

Event ID 15: Task TriggerID request failed.

Description

Message #

Fields #

Event ID 20: DeviceTriggerPerformanceStart

Fields #

Event ID 21: DeviceTriggerPerformanceStop

Fields #

Event ID 22: DeviceTriggerPerformanceStop22

Fields #

Event ID 30: Package packageName is attempting to associate with aepId.

Description

Message #

Fields #

Provenance

Downloads