Microsoft-Windows-Kernel-AppCompat

18 events across 2 channels

Event	Title	Channel	Sample
1	The executable ExecutablePath received an access denied error when trying to …	General	N
2	CompatCacheInitStart	Performance	N
3	CompatCacheInitStop	Performance	N
4	CompatCacheUpdateStart	Performance	N
5	CompatCacheUpdateStop	Performance	N
6	CompatCacheQueryStart	Performance	Y
7	CompatCacheQueryStop	Performance	Y
8	CompatCdbQueryStart	Performance	Y
9	CompatCdbQueryStop	Performance	Y
10	CompatMapQuirks	Performance	Y
11	CompatMapQuirks	Performance	Y
12	CompatUserModeQueryStart	Performance	Y
13	CompatUserModeQueryStop	Performance	Y
14	CompatSdbQueryStart	Performance	N
15	CompatSdbQueryStop	Performance	N
16	CompatCacheQueryProcessStart	Performance	Y
17	CompatCacheQueryProcessStop	Performance	Y
18	{Remote Registy Service} Access Denied to key: KeyName under parent key: …	General	N

Event ID 1: The executable ExecutablePath received an access denied error when trying to modify the registry key RegistryPath.

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: General
Opcode: Info

Description

The executable ExecutablePath received an access denied error when trying to modify the registry key RegistryPath.

Message #

The executable %2 received an access denied error when trying to modify the registry key %4.

Fields #

Name	Description
`ExecutablePathLength` UInt16
`ExecutablePath` UnicodeString
`RegistryPathLength` UInt16
`RegistryPath` UnicodeString

Event ID 2: CompatCacheInitStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Task: CompatCacheInit
Opcode: Start

Event ID 3: CompatCacheInitStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Task: CompatCacheInit
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Event ID 4: CompatCacheUpdateStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Task: CompatCacheUpdate
Opcode: Start

Event ID 5: CompatCacheUpdateStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Task: CompatCacheUpdate
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Event ID 6: CompatCacheQueryStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Level: Informational
Task: CompatCacheQuery
Opcode: Start

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "6",
    "version": "0",
    "level": "4",
    "task": "2",
    "opcode": "1",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.711292600+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "10576",
      "thread_id": "12592"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {},
  "message": ""
}

Event ID 7: CompatCacheQueryStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Also via: realtime ETW trace
Level: Informational
Task: CompatCacheQuery
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "7",
    "version": "0",
    "level": "4",
    "task": "2",
    "opcode": "2",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.711411300+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "10576",
      "thread_id": "12592"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "StatusCode": "0x0"
  },
  "message": ""
}

Event ID 8: CompatCdbQueryStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Level: Informational
Task: CompatCdbQuery
Opcode: Start

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "8",
    "version": "0",
    "level": "4",
    "task": "3",
    "opcode": "1",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.584925400+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "11396",
      "thread_id": "684"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {},
  "message": ""
}

Event ID 9: CompatCdbQueryStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Also via: realtime ETW trace
Level: Informational
Task: CompatCdbQuery
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "9",
    "version": "0",
    "level": "4",
    "task": "3",
    "opcode": "2",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.584927900+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "11396",
      "thread_id": "684"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "StatusCode": "0x0"
  },
  "message": ""
}

Event ID 10: CompatMapQuirks

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Level: Informational
Task: CompatMapQuirks
Opcode: Start

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16A1ADC1-9B7F-4CD9-94B3-D8296AB1B130}",
    "event_source_name": "",
    "event_id": 10,
    "version": 0,
    "level": 4,
    "task": 4,
    "opcode": 1,
    "keywords": "0x4000000000000000",
    "time_created": "2026-06-02T05:25:25.034+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 17736,
      "thread_id": 14792
    },
    "channel": "ETW Trace",
    "computer": "JD-DC01-2022",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {},
  "message": "CompatMapQuirks"
}

Event ID 11: CompatMapQuirks

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Also via: realtime ETW trace
Level: Informational
Task: CompatMapQuirks
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16A1ADC1-9B7F-4CD9-94B3-D8296AB1B130}",
    "event_source_name": "",
    "event_id": 11,
    "version": 0,
    "level": 4,
    "task": 4,
    "opcode": 2,
    "keywords": "0x4000000000000000",
    "time_created": "2026-06-02T05:25:25.034+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 17736,
      "thread_id": 14792
    },
    "channel": "ETW Trace",
    "computer": "JD-DC01-2022",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "StatusCode": "00000000"
  },
  "message": "CompatMapQuirks"
}

Event ID 12: CompatUserModeQueryStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Level: Informational
Task: CompatUserModeQuery
Opcode: Start

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "12",
    "version": "0",
    "level": "4",
    "task": "6",
    "opcode": "1",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.709619200+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "15228",
      "thread_id": "9728"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {},
  "message": ""
}

Event ID 13: CompatUserModeQueryStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Also via: realtime ETW trace
Level: Informational
Task: CompatUserModeQuery
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "13",
    "version": "0",
    "level": "4",
    "task": "6",
    "opcode": "2",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.710924500+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "15228",
      "thread_id": "9728"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "StatusCode": "0x0"
  },
  "message": ""
}

Event ID 14: CompatSdbQueryStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Task: CompatSdbQuery
Opcode: Start

Event ID 15: CompatSdbQueryStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Task: CompatSdbQuery
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Event ID 16: CompatCacheQueryProcessStart

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Level: Informational
Task: CompatCacheQueryProcess
Opcode: Start

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "16",
    "version": "0",
    "level": "4",
    "task": "8",
    "opcode": "1",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.709698700+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "15228",
      "thread_id": "9728"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {},
  "message": ""
}

Event ID 17: CompatCacheQueryProcessStop

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: Performance
Also via: realtime ETW trace
Level: Informational
Task: CompatCacheQueryProcess
Opcode: Stop

Fields #

Name	Description
`StatusCode` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Kernel-AppCompat",
    "guid": "{16a1adc1-9b7f-4cd9-94b3-d8296ab1b130}",
    "event_source_name": "",
    "event_id": "17",
    "version": "0",
    "level": "4",
    "task": "8",
    "opcode": "2",
    "keywords": 4611686018427387904,
    "time_created": "2026-03-15T04:33:34.710918300+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{00000000-0000-0000-0000-000000000000}"
    },
    "execution": {
      "process_id": "15228",
      "thread_id": "9728"
    },
    "channel": "Microsoft-Windows-Kernel-AppCompat/Performance",
    "computer": "",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "StatusCode": "0x0"
  },
  "message": ""
}

Event ID 18: {Remote Registy Service} Access Denied to key: KeyName under parent key: ParentKeyName as the parent is mentioned under AllowedExactPaths and hence subkey cannot b...

Provider: Microsoft-Windows-Kernel-AppCompat
Channel: General

Description

{Remote Registy Service} Access Denied to key: KeyName under parent key: ParentKeyName as the parent is mentioned under AllowedExactPaths and hence subkey cannot be accessed.

Message #

{Remote Registy Service} Access Denied to key: %2 under parent key: %4 as the parent is mentioned under AllowedExactPaths and hence subkey cannot be accessed.

Fields #

Name	Description
`KeyNameLength` UInt16
`KeyName` UnicodeString
`ParentKeyNameLength` UInt16
`ParentKeyName` 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 {16A1ADC1-9B7F-4CD9-94B3-D8296AB1B130}

Defined in Microsoft-Windows-System-Events.dll, which carries the event manifest.

Observed on:

WS2022-20348.4893, sample captured from a live trace, binary version 10.0.20348.3932, captured 2026-06-02
WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.3932, 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-Kernel-AppCompat

Event ID 1: The executable ExecutablePath received an access denied error when trying to modify the registry key RegistryPath.

Description

Message #

Fields #

Event ID 2: CompatCacheInitStart

Event ID 3: CompatCacheInitStop

Fields #

Event ID 4: CompatCacheUpdateStart

Event ID 5: CompatCacheUpdateStop

Fields #

Event ID 6: CompatCacheQueryStart

Example Event #

Event ID 7: CompatCacheQueryStop

Fields #

Example Event #

Event ID 8: CompatCdbQueryStart

Example Event #

Event ID 9: CompatCdbQueryStop

Fields #

Example Event #

Event ID 10: CompatMapQuirks

Example Event #

Event ID 11: CompatMapQuirks

Fields #

Example Event #

Event ID 12: CompatUserModeQueryStart

Example Event #

Event ID 13: CompatUserModeQueryStop

Fields #

Example Event #

Event ID 14: CompatSdbQueryStart

Event ID 15: CompatSdbQueryStop

Fields #

Event ID 16: CompatCacheQueryProcessStart

Example Event #

Event ID 17: CompatCacheQueryProcessStop

Fields #

Example Event #

Event ID 18: {Remote Registy Service} Access Denied to key: KeyName under parent key: ParentKeyName as the parent is mentioned under AllowedExactPaths and hence subkey cannot b...

Description

Message #

Fields #

Provenance

Downloads