Microsoft-Windows-FilterManager

14 events across 1 channel

Event	Title	Channel	Sample
1	File System Filter 'DeviceName'.	System	Y
2	Name caching for File System Filters has been disabled on volume 'ExtraString'.	System	N
3	Filter Manager failed to attach to volume 'ExtraString'.	System	Y
4	File System Filter 'DeviceName'.	System	N
5	File System Filter 'DeviceName'.	System	N
6	File System Filter 'DeviceName'.	System	Y
7	File System Filter 'DeviceName'.	System	N
8	Filter Manager successfully attached to volume 'ExtraString'.	System	N
9	Filter Manager failed to attach to file system control device object (CDO) …	System	N
10	Filter Manager successfully attached to file system 'ExtraString'.	System	N
11	File System Filter 'DeviceName'.	System	Y
12	File System Filter 'Process'.	System	N
13	Filter Manager failed to load filter attach policy for this volume.	System	N
14	Filter Manager successfully loaded filter attach policy for this volume.	System	N

Event ID 1: File System Filter 'DeviceName'.

Provider: Microsoft-Windows-FilterManager
Channel: System
Level: Informational

Description

File System Filter 'DeviceName' (Version DeviceVersionMajor.DeviceVersionMinor, DeviceTime) unloaded successfully.

Message #

File System Filter '%5' (Version %2.%3, %6) unloaded successfully.

Fields #

Name	Description
`FinalStatus` HexInt32
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceNameLength` UInt16
`DeviceName` UnicodeString
`DeviceTime` FILETIME

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-FilterManager",
    "guid": "{F3C5E28E-63F6-49C7-A204-E48A1BC4B09D}",
    "event_source_name": "",
    "event_id": 1,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-29T16:32:53.9491520+00:00",
    "event_record_id": 6724,
    "correlation": {},
    "execution": {
      "process_id": 4,
      "thread_id": 1048
    },
    "channel": "System",
    "computer": "telemetry-DC-a.cell-a.ludus.domain",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "FinalStatus": "0x0",
    "DeviceVersionMajor": "10",
    "DeviceVersionMinor": "0",
    "DeviceNameLength": "6",
    "DeviceName": "CldFlt",
    "DeviceTime": "2074-11-09T15:03:12.0000000Z"
  },
  "message": "File System Filter 'CldFlt' (Version 10.0, ‎2074‎-‎11‎-‎09T15:03:12.000000000Z) unloaded successfully."
}

Event ID 2: Name caching for File System Filters has been disabled on volume 'ExtraString'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

Name caching for File System Filters has been disabled on volume 'ExtraString'.

Message #

Name caching for File System Filters has been disabled on volume '%3'.

Fields #

Name	Description
`FinalStatus` HexInt32
`ExtraStringLength` UInt16
`ExtraString` UnicodeString

Event ID 3: Filter Manager failed to attach to volume 'ExtraString'.

Provider: Microsoft-Windows-FilterManager
Channel: System
Level: Error

Description

Filter Manager failed to attach to volume 'ExtraString'. This volume will be unavailable for filtering until a reboot. The final status was FinalStatus.

Message #

Filter Manager failed to attach to volume '%3'.  This volume will be unavailable for filtering until a reboot.  The final status was %1.

Fields #

Name	Description
`FinalStatus` HexInt32
`ExtraStringLength` UInt16
`ExtraString` UnicodeString

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-FilterManager",
    "guid": "{F3C5E28E-63F6-49C7-A204-E48A1BC4B09D}",
    "event_source_name": "",
    "event_id": 3,
    "version": 0,
    "level": 2,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-03-20T19:05:01.3188675+00:00",
    "event_record_id": 3586,
    "correlation": {},
    "execution": {
      "process_id": 3800,
      "thread_id": 8480
    },
    "channel": "System",
    "computer": "JD-WIN11-22H2-1.ludus.domain",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "FinalStatus": "0xc03a001c",
    "ExtraStringLength": "23",
    "ExtraString": "\\Device\\HarddiskVolume6"
  },
  "message": "Filter Manager failed to attach to volume '\\Device\\HarddiskVolume6'.  This volume will be unavailable for filtering until a reboot.  The final status was 0xC03A001C."
}

Event ID 4: File System Filter 'DeviceName'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

File System Filter 'DeviceName' (Version DeviceVersionMajor.DeviceVersionMinor, DeviceTime) failed to attach to volume 'ExtraString'. The filter returned a non-standard final status of FinalStatus. This filter and/or its supporting applications should handle this condition. If this condition persists, contact the vendor.

Message #

File System Filter '%5' (Version %2.%3, %6) failed to attach to volume '%8'.  The filter returned a non-standard final status of %1.  This filter and/or its supporting applications should handle this condition.  If this condition persists, contact the vendor.

Fields #

Name	Description
`FinalStatus` HexInt32
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceNameLength` UInt16
`DeviceName` UnicodeString
`DeviceTime` FILETIME
`ExtraStringLength` UInt16
`ExtraString` UnicodeString

Event ID 5: File System Filter 'DeviceName'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

File System Filter 'DeviceName' (Version DeviceVersionMajor.DeviceVersionMinor, DeviceTime) failed to register with Filter Manager. The final status for this operation was FinalStatus.

Message #

File System Filter '%5' (Version %2.%3, %6) failed to register with Filter Manager.  The final status for this operation was %1.

Fields #

Name	Description
`FinalStatus` HexInt32
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceNameLength` UInt16
`DeviceName` UnicodeString
`DeviceTime` FILETIME

Event ID 6: File System Filter 'DeviceName'.

Provider: Microsoft-Windows-FilterManager
Channel: System
Level: Informational
Collection Priority: Recommended (NSA)

Description

File System Filter 'DeviceName' (DeviceVersionMajor.DeviceVersionMinor, DeviceTime) has successfully loaded and registered with Filter Manager.

Message #

File System Filter '%5' (%2.%3, %6) has successfully loaded and registered with Filter Manager.

Fields #

Name	Description
`FinalStatus` HexInt32
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceNameLength` UInt16
`DeviceName` UnicodeString
`DeviceTime` FILETIME

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-FilterManager",
    "guid": "{F3C5E28E-63F6-49C7-A204-E48A1BC4B09D}",
    "event_source_name": "",
    "event_id": 6,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-29T16:32:53.9710076+00:00",
    "event_record_id": 6728,
    "correlation": {},
    "execution": {
      "process_id": 4,
      "thread_id": 176
    },
    "channel": "System",
    "computer": "telemetry-DC-a.cell-a.ludus.domain",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "FinalStatus": "0x0",
    "DeviceVersionMajor": "10",
    "DeviceVersionMinor": "0",
    "DeviceNameLength": "7",
    "DeviceName": "bindflt",
    "DeviceTime": "2051-03-04T03:45:47.0000000Z"
  },
  "message": "File System Filter 'bindflt' (10.0, ‎2051‎-‎03‎-‎04T03:45:47.000000000Z) has successfully loaded and registered with Filter Manager."
}

Event ID 7: File System Filter 'DeviceName'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

File System Filter 'DeviceName' (Version DeviceVersionMajor.DeviceVersionMinor, DeviceTime) failed to start filtering. The final status for this operation was FinalStatus.

Message #

File System Filter '%5' (Version %2.%3, %6) failed to start filtering.  The final status for this operation was %1.

Fields #

Name	Description
`FinalStatus` HexInt32
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceNameLength` UInt16
`DeviceName` UnicodeString
`DeviceTime` FILETIME

Event ID 8: Filter Manager successfully attached to volume 'ExtraString'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

Filter Manager successfully attached to volume 'ExtraString'.

Message #

Filter Manager successfully attached to volume '%3'.

Fields #

Name	Description
`FinalStatus` HexInt32
`ExtraStringLength` UInt16
`ExtraString` UnicodeString

Event ID 9: Filter Manager failed to attach to file system control device object (CDO) 'ExtraString'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

Filter Manager failed to attach to file system control device object (CDO) 'ExtraString'. All volumes associated with this file system will be unavailable for filtering until a reboot. The final status was FinalStatus.

Message #

Filter Manager failed to attach to file system control device object (CDO) '%3'.  All volumes associated with this file system will be unavailable for filtering until a reboot. The final status was %1.

Fields #

Name	Description
`FinalStatus` HexInt32
`ExtraStringLength` UInt16
`ExtraString` UnicodeString

Event ID 10: Filter Manager successfully attached to file system 'ExtraString'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

Filter Manager successfully attached to file system 'ExtraString'.

Message #

Filter Manager successfully attached to file system '%3'.

Fields #

Name	Description
`FinalStatus` HexInt32
`ExtraStringLength` UInt16
`ExtraString` UnicodeString

Event ID 11: File System Filter 'DeviceName'.

Provider: Microsoft-Windows-FilterManager
Channel: System
Level: Warning

Description

File System Filter 'DeviceName' (Version DeviceVersionMajor.DeviceVersionMinor, DeviceTime) does not support bypass IO.

Message #

File System Filter '%1' (Version %2.%3, %4) does not support bypass IO.
Supported features: %5.

Fields #

Name	Description
`DeviceName` UnicodeString
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceTime` FILETIME
`SupportedFeatures` HexInt32

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-FilterManager",
    "guid": "{F3C5E28E-63F6-49C7-A204-E48A1BC4B09D}",
    "event_source_name": "",
    "event_id": 11,
    "version": 0,
    "level": 3,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-28T04:02:40.2008732+00:00",
    "event_record_id": 1308,
    "correlation": {},
    "execution": {
      "process_id": 4,
      "thread_id": 10520
    },
    "channel": "System",
    "computer": "telemetry-W11-d.cell-d.ludus.domain",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "DeviceName": "SysmonDrv",
    "DeviceVersionMajor": "0",
    "DeviceVersionMinor": "0",
    "DeviceTime": "2026-03-25T15:35:43.0000000Z",
    "SupportedFeatures": "0x4"
  },
  "message": "File System Filter 'SysmonDrv' (Version 0.0, ‎2026‎-‎03‎-‎25T15:35:43.000000000Z) does not support bypass IO.\r\nSupported features: 0x4."
}

Event ID 12: File System Filter 'Process'.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

File System Filter 'Process' (Version File.Bypass_IO_Operation, Vetoing_Reason) vetoed bypass IO.

Message #

File System Filter '%1' (Version %2.%3, %4) vetoed bypass IO.

     Process: %5
     File: %6
     Bypass IO Operation: %7
     Vetoing Reason: %8
     Operation Status: %9

Fields #

Name	Description
`DeviceName` UnicodeString
`DeviceVersionMajor` UInt32
`DeviceVersionMinor` UInt32
`DeviceTime` FILETIME
`ProcessName` AnsiString
`FileName` UnicodeString
`BypassIoOperation` UInt32
`BypassVetoingReason` UnicodeString
`OperationStatus` HexInt32	NTSTATUS reference

Event ID 13: Filter Manager failed to load filter attach policy for this volume.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

Filter Manager failed to load filter attach policy for this volume.

Message #

Filter Manager failed to load filter attach policy for this volume.

     Volume name: %2
     Volume GUID: %3
     File system GUID: %4
     File system driver: %6
     Status: %7

Fields #

Name	Description
`VolumeNameLength` UInt16
`VolumeName` UnicodeString
`VolumeGuid` GUID
`FsGuid` GUID
`FsDriverNameLength` UInt16
`FsDriverName` UnicodeString
`Status` HexInt32	NTSTATUS reference

Event ID 14: Filter Manager successfully loaded filter attach policy for this volume.

Provider: Microsoft-Windows-FilterManager
Channel: System

Description

Filter Manager successfully loaded filter attach policy for this volume.

Message #

Filter Manager successfully loaded filter attach policy for this volume.

     Volume name: %2
     Volume GUID: %3
     File system GUID: %4
     File system driver: %6

     GpAllowStatus: %7
     SystemAllowStatus: %10
     VolumeAllowStatus: %13
     Allow antivirus filter: %16
     Antivirus policy is from group policy: %17

Fields #

Name	Description
`VolumeNameLength` UInt16
`VolumeName` UnicodeString
`VolumeGuid` GUID
`FsGuid` GUID
`FsDriverNameLength` UInt16
`FsDriverName` UnicodeString
`GpAllowStatus` HexInt32
`GpAllowListLength` UInt16
`GpAllowList` UnicodeString
`SystemAllowStatus` HexInt32
`SystemAllowListLength` UInt16
`SystemAllowList` UnicodeString
`VolumeAllowStatus` HexInt32
`VolumeAllowListLength` UInt16
`VolumeAllowList` UnicodeString
`AllowAvFilter` Boolean
`AvPolicyIsFromGp` Boolean

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 f3c5e28e-63f6-49c7-a204-e48a1bc4b09d

Defined in fltmgr.sys, the binary that emits these events.

Observed on:

WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.1, captured 2026-06-02
Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.1, 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-FilterManager

Event ID 1: File System Filter 'DeviceName'.

Description

Message #

Fields #

Example Event #

Event ID 2: Name caching for File System Filters has been disabled on volume 'ExtraString'.

Description

Message #

Fields #

Event ID 3: Filter Manager failed to attach to volume 'ExtraString'.

Description

Message #

Fields #

Example Event #

Event ID 4: File System Filter 'DeviceName'.

Description

Message #

Fields #

Event ID 5: File System Filter 'DeviceName'.

Description

Message #

Fields #

Event ID 6: File System Filter 'DeviceName'.

Description

Message #

Fields #

Example Event #

Event ID 7: File System Filter 'DeviceName'.

Description

Message #

Fields #

Event ID 8: Filter Manager successfully attached to volume 'ExtraString'.

Description

Message #

Fields #

Event ID 9: Filter Manager failed to attach to file system control device object (CDO) 'ExtraString'.

Description

Message #

Fields #

Event ID 10: Filter Manager successfully attached to file system 'ExtraString'.

Description

Message #

Fields #

Event ID 11: File System Filter 'DeviceName'.

Description

Message #

Fields #

Example Event #

Event ID 12: File System Filter 'Process'.

Description

Message #

Fields #

Event ID 13: Filter Manager failed to load filter attach policy for this volume.

Description

Message #

Fields #

Event ID 14: Filter Manager successfully loaded filter attach policy for this volume.

Description

Message #

Fields #

Provenance

Downloads