Microsoft-Windows-Remotefs-Rdbss

24 events across 2 channels

Event	Title	Channel	Sample
100	RDBSS Name Canonicalize Error: RDBSS_Name_Canonicalize_Error Location: Location …	Diagnostic	N
401	Create VNetRoot Error: Create_VNetRoot_Error Location: Location Context: …	Diagnostic	N
30001	Irp request: Irp Irp RxContext RxContext Fcb Fcb Fobx Fobx FileObject FileObject …	Operational	Y
30002	Irp request completion: Irp Irp RxContext RxContext Fcb Fcb Fobx Fobx FileObject …	Operational	Y
30003	FastIo request: FileObject FileObject FileName FileName MajorFunction …	Operational	N
30004	FastIo completion: FileObject FileObject FileName FileName MajorFunction …	Operational	N
30005	Csc request: RxContext RxContext.	Operational	N
30006	Csc completion: RxContext RxContext Status Status.	Operational	N
30007	Acquire Fcb: RxContext RxContext Fcb Fcb Mode Mode.	Operational	N
30008	Acquire Fcb completion: RxContext RxContext Fcb Fcb.	Operational	N
30009	Cc read request: RxContext RxContext FileObject FileObject.	Operational	N
30010	Cc read completion: RxContext RxContext FileObject FileObject Status Status.	Operational	N
30011	Cc write request: RxContext RxContext FileObject FileObject.	Operational	N
30012	Cc write completion: RxContext RxContext FileObject FileObject Status Status.	Operational	N
30013	Cc uninitialize cache map request: RxContext RxContext FileObject FileObject.	Operational	N
30014	Cc uninitialize cache map completion: RxContext RxContext FileObject FileObject …	Operational	N
30015	Cc flush request: Fcb Fcb.	Operational	N
30016	Cc flush completion: Fcb Fcb.	Operational	N
30017	Cc purge request: Fcb Fcb.	Operational	N
30018	Cc purge completion: Fcb Fcb.	Operational	N
30019	Perform logical view migration: RxContext RxContext from (logical path …	Operational	N
30020	Logical view migration completion: RxContext RxContext from (logical path …	Operational	N
30301	Orphaning: Fcb Fcb SrvOpen SrvOpen Fobx Fobx.	Operational	N
30302	Delay close: Fcb Fcb SrvOpen SrvOpen Fobx Fobx.	Operational	N

Event ID 100: RDBSS Name Canonicalize Error: RDBSS_Name_Canonicalize_Error Location: Location Context: Context.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Diagnostic
Opcode: Info

Description

RDBSS Name Canonicalize Error: RDBSS_Name_Canonicalize_Error Location: Location Context: Context.

Message #

RDBSS Name Canonicalize Error: %1 Location: %2 Context: %3

Fields #

Name	Description
`ErrorCode` UInt32
`Location` UInt32
`Context` UInt32

Event ID 401: Create VNetRoot Error: Create_VNetRoot_Error Location: Location Context: Context.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Diagnostic
Opcode: Info

Description

Create VNetRoot Error: Create_VNetRoot_Error Location: Location Context: Context.

Message #

Create VNetRoot Error: %1 Location: %2 Context: %3

Fields #

Name	Description
`ErrorCode` UInt32
`Location` UInt32
`Context` UInt32

Event ID 30001: Irp request: Irp Irp RxContext RxContext Fcb Fcb Fobx Fobx FileObject FileObject FileName FileName MajorFunction MajorFunction.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Also via: realtime ETW trace
Level: Informational
Opcode: Info

Description

Irp request: Irp Irp RxContext RxContext Fcb Fcb Fobx Fobx FileObject FileObject FileName FileName MajorFunction MajorFunction.

Message #

Irp request: Irp %1 RxContext %2 Fcb %3 Fobx %4 FileObject %5 FileName %7 MajorFunction %8

Fields #

Name	Description
`Irp` Pointer
`RxContext` Pointer
`Fcb` Pointer
`Fobx` Pointer
`FileObject` Pointer
`FileNameLength` UInt16
`FileName` UnicodeString
`MajorFunction` UInt16

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Remotefs-Rdbss",
    "guid": "{1A870028-F191-4699-8473-6FCD299EAB77}",
    "event_source_name": "",
    "event_id": 30001,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": "0x4000000000000003",
    "time_created": "2026-06-02T06:01:00.012+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{72529F65-EE0F-0003-6DCB-7B720FEEDC01}"
    },
    "execution": {
      "process_id": 3824,
      "thread_id": 14624
    },
    "channel": "ETW Trace",
    "computer": "DESKTOP-FF3N5XK",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "Fcb": "0xFFFFF80065CCA7C0",
    "FileName": "",
    "FileNameLength": 0,
    "FileObject": "0xFFFFBD09EC3CA780",
    "Fobx": "0x0",
    "Irp": "0xFFFFBD09F35DFAE0",
    "MajorFunction": 14,
    "RxContext": "0xFFFFBD09DF692010"
  },
  "message": ""
}

Event ID 30002: Irp request completion: Irp Irp RxContext RxContext Fcb Fcb Fobx Fobx FileObject FileObject FileName FileName MajorFunction MajorFunction Status Status.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Also via: realtime ETW trace
Level: Informational
Opcode: Info

Description

Irp request completion: Irp Irp RxContext RxContext Fcb Fcb Fobx Fobx FileObject FileObject FileName FileName MajorFunction MajorFunction Status Status.

Message #

Irp request completion: Irp %1 RxContext %2 Fcb %3 Fobx %4 FileObject %5 FileName %7 MajorFunction %8 Status %9

Fields #

Name	Description
`Irp` Pointer
`RxContext` Pointer
`Fcb` Pointer
`Fobx` Pointer
`FileObject` Pointer
`FileNameLength` UInt16
`FileName` UnicodeString
`MajorFunction` UInt16
`Status` UInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Remotefs-Rdbss",
    "guid": "{1A870028-F191-4699-8473-6FCD299EAB77}",
    "event_source_name": "",
    "event_id": 30002,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": "0x4000000000000003",
    "time_created": "2026-06-02T06:01:00.012+00:00",
    "event_record_id": 0,
    "correlation": {
      "ActivityID": "{72529F65-EE0F-0003-6DCB-7B720FEEDC01}"
    },
    "execution": {
      "process_id": 3824,
      "thread_id": 14624
    },
    "channel": "ETW Trace",
    "computer": "DESKTOP-FF3N5XK",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "Fcb": "0xFFFFF80065CCA7C0",
    "FileName": "",
    "FileNameLength": 0,
    "FileObject": "0xFFFFBD09EC3CA780",
    "Fobx": "0x0",
    "Irp": "0xFFFFBD09F35DFAE0",
    "MajorFunction": 14,
    "RxContext": "0xFFFFBD09DF692010",
    "Status": 3221226099
  },
  "message": ""
}

Event ID 30003: FastIo request: FileObject FileObject FileName FileName MajorFunction MajorFunction.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

FastIo request: FileObject FileObject FileName FileName MajorFunction MajorFunction.

Message #

FastIo request: FileObject %1 FileName %3 MajorFunction %4

Fields #

Name	Description
`FileObject` Pointer
`FileNameLength` UInt16
`FileName` UnicodeString
`MajorFunction` UInt16

Event ID 30004: FastIo completion: FileObject FileObject FileName FileName MajorFunction MajorFunction Status Status.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

FastIo completion: FileObject FileObject FileName FileName MajorFunction MajorFunction Status Status.

Message #

FastIo completion: FileObject %1 FileName %3 MajorFunction %4 Status %5

Fields #

Name	Description
`FileObject` Pointer
`FileNameLength` UInt16
`FileName` UnicodeString
`MajorFunction` UInt16
`Status` UInt32	NTSTATUS reference

Event ID 30005: Csc request: RxContext RxContext.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Csc request: RxContext RxContext.

Message #

Csc request: RxContext %1

Fields #

Name	Description
`RxContext` Pointer

Event ID 30006: Csc completion: RxContext RxContext Status Status.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Csc completion: RxContext RxContext Status Status.

Message #

Csc completion: RxContext %1 Status %2

Fields #

Name	Description
`RxContext` Pointer
`Status` UInt32	NTSTATUS reference

Event ID 30007: Acquire Fcb: RxContext RxContext Fcb Fcb Mode Mode.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Acquire Fcb: RxContext RxContext Fcb Fcb Mode Mode.

Message #

Acquire Fcb: RxContext %1 Fcb %2 Mode %3

Fields #

Name	Description
`RxContext` Pointer
`Fcb` Pointer
`Mode` UInt32

Event ID 30008: Acquire Fcb completion: RxContext RxContext Fcb Fcb.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Acquire Fcb completion: RxContext RxContext Fcb Fcb.

Message #

Acquire Fcb completion: RxContext %1 Fcb %2

Fields #

Name	Description
`RxContext` Pointer
`Fcb` Pointer

Event ID 30009: Cc read request: RxContext RxContext FileObject FileObject.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc read request: RxContext RxContext FileObject FileObject.

Message #

Cc read request: RxContext %1 FileObject %2

Fields #

Name	Description
`RxContext` Pointer
`FileObject` Pointer

Event ID 30010: Cc read completion: RxContext RxContext FileObject FileObject Status Status.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc read completion: RxContext RxContext FileObject FileObject Status Status.

Message #

Cc read completion: RxContext %1 FileObject %2 Status %3

Fields #

Name	Description
`RxContext` Pointer
`FileObject` Pointer
`Status` UInt32	NTSTATUS reference

Event ID 30011: Cc write request: RxContext RxContext FileObject FileObject.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc write request: RxContext RxContext FileObject FileObject.

Message #

Cc write request: RxContext %1 FileObject %2

Fields #

Name	Description
`RxContext` Pointer
`FileObject` Pointer

Event ID 30012: Cc write completion: RxContext RxContext FileObject FileObject Status Status.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc write completion: RxContext RxContext FileObject FileObject Status Status.

Message #

Cc write completion: RxContext %1 FileObject %2 Status %3

Fields #

Name	Description
`RxContext` Pointer
`FileObject` Pointer
`Status` UInt32	NTSTATUS reference

Event ID 30013: Cc uninitialize cache map request: RxContext RxContext FileObject FileObject.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc uninitialize cache map request: RxContext RxContext FileObject FileObject.

Message #

Cc uninitialize cache map request: RxContext %1 FileObject %2

Fields #

Name	Description
`RxContext` Pointer
`FileObject` Pointer

Event ID 30014: Cc uninitialize cache map completion: RxContext RxContext FileObject FileObject Status Status.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc uninitialize cache map completion: RxContext RxContext FileObject FileObject Status Status.

Message #

Cc uninitialize cache map completion: RxContext %1 FileObject %2 Status %3

Fields #

Name	Description
`RxContext` Pointer
`FileObject` Pointer
`Status` UInt32	NTSTATUS reference

Event ID 30015: Cc flush request: Fcb Fcb.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc flush request: Fcb Fcb.

Message #

Cc flush request: Fcb %1

Fields #

Name	Description
`Fcb` Pointer

Event ID 30016: Cc flush completion: Fcb Fcb.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc flush completion: Fcb Fcb.

Message #

Cc flush completion: Fcb %1

Fields #

Name	Description
`Fcb` Pointer

Event ID 30017: Cc purge request: Fcb Fcb.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc purge request: Fcb Fcb.

Message #

Cc purge request: Fcb %1

Fields #

Name	Description
`Fcb` Pointer

Event ID 30018: Cc purge completion: Fcb Fcb.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Cc purge completion: Fcb Fcb.

Message #

Cc purge completion: Fcb %1

Fields #

Name	Description
`Fcb` Pointer

Event ID 30019: Perform logical view migration: RxContext RxContext from (logical path LogicalPathFrom physical path PhysicalPathFrom) to (logical path LogicalPathTo physical path PhysicalPathTo).

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Perform logical view migration: RxContext RxContext from (logical path LogicalPathFrom physical path PhysicalPathFrom) to (logical path LogicalPathTo physical path PhysicalPathTo).

Message #

Perform logical view migration: RxContext %1 from (logical path %3 physical path %5) to (logical path %7 physical path %9)

Fields #

Name	Description
`RxContext` Pointer
`LogicalPathFromLength` UInt16
`LogicalPathFrom` UnicodeString
`PhysicalPathFromLength` UInt16
`PhysicalPathFrom` UnicodeString
`LogicalPathToLength` UInt16
`LogicalPathTo` UnicodeString
`PhysicalPathToLength` UInt16
`PhysicalPathTo` UnicodeString

Event ID 30020: Logical view migration completion: RxContext RxContext from (logical path LogicalPathFrom physical path PhysicalPathFrom) to (logical path LogicalPathTo physical path PhysicalPathTo).

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Logical view migration completion: RxContext RxContext from (logical path LogicalPathFrom physical path PhysicalPathFrom) to (logical path LogicalPathTo physical path PhysicalPathTo).

Message #

Logical view migration completion: RxContext %1 from (logical path %3 physical path %5) to (logical path %7 physical path %9)

Fields #

Name	Description
`RxContext` Pointer
`LogicalPathFromLength` UInt16
`LogicalPathFrom` UnicodeString
`PhysicalPathFromLength` UInt16
`PhysicalPathFrom` UnicodeString
`LogicalPathToLength` UInt16
`LogicalPathTo` UnicodeString
`PhysicalPathToLength` UInt16
`PhysicalPathTo` UnicodeString

Event ID 30301: Orphaning: Fcb Fcb SrvOpen SrvOpen Fobx Fobx.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Orphaning: Fcb Fcb SrvOpen SrvOpen Fobx Fobx.

Message #

Orphaning: Fcb %1 SrvOpen %2 Fobx %3

Fields #

Name	Description
`Fcb` Pointer
`SrvOpen` Pointer
`Fobx` Pointer

Event ID 30302: Delay close: Fcb Fcb SrvOpen SrvOpen Fobx Fobx.

Provider: Microsoft-Windows-Remotefs-Rdbss
Channel: Operational
Opcode: Info

Description

Delay close: Fcb Fcb SrvOpen SrvOpen Fobx Fobx.

Message #

Delay close: Fcb %1 SrvOpen %2 Fobx %3

Fields #

Name	Description
`Fcb` Pointer
`SrvOpen` Pointer
`Fobx` Pointer

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 {1A870028-F191-4699-8473-6FCD299EAB77}

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

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 10.0.20348.3804, 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)