Microsoft-Windows-AppID

8 events across 1 channel

Event	Title	Channel	Sample
4001	AppID failed to compute FilePathBuffer process attributes.	Operational	N
4002	AppID Driver failed to start.	Operational	N
4003	AppID Service failed to start.	Operational	N
4004	AppID Service is called to verify FilePathBuffer signature.	Operational	Y
4005	AppID certificate store verification failed.	Operational	N
4006	AppID certificate store is verified.	Operational	Y
4007	AppID encountered a failure from discache.	Operational	N
4008	Function call error: CallingFunctionName called FunctionCallName which returned …	Operational	Y

Event ID 4001: AppID failed to compute FilePathBuffer process attributes.

Provider: Microsoft-Windows-AppID
Channel: Operational

Description

AppID failed to compute FilePathBuffer process attributes. Status Status.

Message #

AppID failed to compute %2 process attributes. Status %3.

Fields #

Name	Description
`FilePathLength` UInt16
`FilePathBuffer` UnicodeString
`Status` HexInt32	NTSTATUS reference

Event ID 4002: AppID Driver failed to start.

Provider: Microsoft-Windows-AppID
Channel: Operational

Description

AppID Driver failed to start. Status Status.

Message #

AppID Driver failed to start. Status %1.

Fields #

Name	Description
`Status` HexInt32	NTSTATUS reference

Event ID 4003: AppID Service failed to start.

Provider: Microsoft-Windows-AppID
Channel: Operational

Description

AppID Service failed to start. Status Status.

Message #

AppID Service failed to start. Status %1.

Fields #

Name	Description
`Status` HexInt32	NTSTATUS reference

Event ID 4004: AppID Service is called to verify FilePathBuffer signature.

Provider: Microsoft-Windows-AppID
Channel: Operational
Also via: realtime ETW trace
Level: Informational

Description

AppID Service is called to verify FilePathBuffer signature. Status Status.

Message #

AppID Service is called to verify %2 signature. Status %5.

Fields #

Name	Description
`FilePathLength` UInt16
`FilePathBuffer` UnicodeString
`PublisherNameLength` UInt16
`PublisherNameBuffer` UnicodeString
`Status` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-AppID",
    "guid": "{3CB2A168-FE19-4A4E-BDAD-DCF422F13473}",
    "event_source_name": "",
    "event_id": 4004,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": "0x0000000000000000",
    "time_created": "2026-06-02T17:34:50.660+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{AE3ADFDF-F2B5-0001-06F3-3AAEB5F2DC01}"
    },
    "execution": {
      "process_id": 1364,
      "thread_id": 5032
    },
    "channel": "ETW Trace",
    "computer": "DESKTOP-FF3N5XK",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "FilePathBuffer": "\\\\?\\C:\\Windows\\assembly\\NativeImages_v4.0.30319_64\\Microsoft.Pb378ec07#\\6dd817c34159569e35bf90aa10a69db0\\Microsoft.PowerShell.ConsoleHost.ni.dll",
    "FilePathLength": 144,
    "PublisherNameBuffer": "",
    "PublisherNameLength": 0,
    "Status": "FEFFFFFF"
  },
  "message": ""
}

Event ID 4005: AppID certificate store verification failed.

Provider: Microsoft-Windows-AppID
Channel: Operational

Description

AppID certificate store verification failed. Status Status.

Message #

AppID certificate store verification failed. Status %1.

Fields #

Name	Description
`Status` HexInt32	NTSTATUS reference

Event ID 4006: AppID certificate store is verified.

Provider: Microsoft-Windows-AppID
Channel: Operational
Level: Informational

Description

AppID certificate store is verified.

Message #

AppID certificate store is verified.

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-AppID",
    "guid": "3CB2A168-FE19-4A4E-BDAD-DCF422F13473",
    "event_source_name": "",
    "event_id": 4006,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": 9223372036854775808,
    "time_created": "2023-11-06T01:45:55.746206+00:00",
    "event_record_id": 50,
    "correlation": {},
    "execution": {
      "process_id": 18240,
      "thread_id": 4544
    },
    "channel": "Microsoft-Windows-AppID/Operational",
    "computer": "WinDev2310Eval",
    "security": {
      "user_id": "S-1-5-19"
    }
  },
  "event_data": {},
  "message": ""
}

References #

Example event sourced from https://github.com/NextronSystems/evtx-baseline

Event ID 4007: AppID encountered a failure from discache.

Provider: Microsoft-Windows-AppID
Channel: Operational

Description

AppID encountered a failure from discache.sys. Status Status.

Message #

AppID encountered a failure from discache.sys. Status %1.

Fields #

Name	Description
`Status` HexInt32	NTSTATUS reference

Event ID 4008: Function call error: CallingFunctionName called FunctionCallName which returned unsuccessfully (Error code: Status).

Provider: Microsoft-Windows-AppID
Channel: Operational
Also via: realtime ETW trace
Level: Error

Description

Function call error: CallingFunctionName called FunctionCallName which returned unsuccessfully (Error code: Status).

Message #

Function call error: %2 called %4 which returned unsuccessfully (Error code: %5).

Fields #

Name	Description
`CallingFunctionNameLength` UInt16
`CallingFunctionName` UnicodeString
`FunctionCallNameLength` UInt16
`FunctionCallName` UnicodeString
`Status` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-AppID",
    "guid": "{3CB2A168-FE19-4A4E-BDAD-DCF422F13473}",
    "event_source_name": "",
    "event_id": 4008,
    "version": 0,
    "level": 2,
    "task": 0,
    "opcode": 0,
    "keywords": "0x0000000000000000",
    "time_created": "2026-06-02T17:34:50.546+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{AE3ADFDF-F2B5-0001-06F3-3AAEB5F2DC01}"
    },
    "execution": {
      "process_id": 1364,
      "thread_id": 5032
    },
    "channel": "ETW Trace",
    "computer": "DESKTOP-FF3N5XK",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "CallingFunctionName": "AipGetFileSignature",
    "CallingFunctionNameLength": 19,
    "FunctionCallName": "WinVerifyTrust(WTD_CHOICE_FILE)",
    "FunctionCallNameLength": 31,
    "Status": "00010B80"
  },
  "message": ""
}

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 {3CB2A168-FE19-4A4E-BDAD-DCF422F13473}

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

Observed on:

Win11-26200.6584, sample captured from a live trace, binary version 10.0.26100.1, captured 2026-06-02
WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.4647, captured 2026-06-02
Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.1, captured 2026-06-02

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`Enter`	Open highlighted result
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`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-AppID

Event ID 4001: AppID failed to compute FilePathBuffer process attributes.

Description

Message #

Fields #

Event ID 4002: AppID Driver failed to start.

Description

Message #

Fields #

Event ID 4003: AppID Service failed to start.

Description

Message #

Fields #

Event ID 4004: AppID Service is called to verify FilePathBuffer signature.

Description

Message #

Fields #

Example Event #

Event ID 4005: AppID certificate store verification failed.

Description

Message #

Fields #

Event ID 4006: AppID certificate store is verified.

Description

Message #

Example Event #

References #

Event ID 4007: AppID encountered a failure from discache.

Description

Message #

Fields #

Event ID 4008: Function call error: CallingFunctionName called FunctionCallName which returned unsuccessfully (Error code: Status).

Description

Message #

Fields #

Example Event #

Provenance

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