Microsoft-Windows-WCN-Config-Registrar

10 events across 1 channel

Event	Title	Channel	Sample
8000	WCN has started a new session.	Diagnostic	N
8001	WCN has established a connection.	Diagnostic	N
8003	WCN is preparing to parse a message.	Diagnostic	N
8004	WCN has generated a message.	Diagnostic	N
8010	WCN has completed a session successfully.	Diagnostic	N
8011	WCN failed to complete a session.	Diagnostic	N
8020	WCN received a message.	Diagnostic	N
8021	WCN is sending a message.	Diagnostic	N
8030	WCN has changed its beacons on transport Transport.	Diagnostic	N
8031	WCN has changed its probe response on transport Transport.	Diagnostic	N

Event ID 8000: WCN has started a new session.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN has started a new session.

Message #

WCN has started a new session.
Peer UUID: %2
Connect reason: %3
Session GUID: %1

Fields #

Name	Description
`SessionGuid` GUID
`PeerUuid` GUID
`Trigger` UInt32

Event ID 8001: WCN has established a connection.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN has established a connection.

Message #

WCN has established a connection.
Session GUID: %1

Fields #

Name	Description
`SessionGuid` GUID

Event ID 8003: WCN is preparing to parse a message.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN is preparing to parse a message.

Message #

WCN is preparing to parse a message.
Session GUID: %1
Message: %3

Fields #

Name	Description
`SessionGuid` GUID
`MessageGuid` GUID
`MessageBlobLength` UInt16
`MessageBlob` Binary

Event ID 8004: WCN has generated a message.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN has generated a message.

Message #

WCN has generated a message.
Session GUID: %1
Message: %3

Fields #

Name	Description
`SessionGuid` GUID
`MessageGuid` GUID
`MessageBlobLength` UInt16
`MessageBlob` Binary

Event ID 8010: WCN has completed a session successfully.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN has completed a session successfully.

Message #

WCN has completed a session successfully.
Session GUID: %1

Fields #

Name	Description
`SessionGuid` GUID

Event ID 8011: WCN failed to complete a session.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN failed to complete a session.

Message #

WCN failed to complete a session.
Session GUID: %1
Error code: %2

Fields #

Name	Description
`SessionGuid` GUID
`ErrorCode` UInt32

Event ID 8020: WCN received a message.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN received a message.

Message #

WCN received a message.
Transport: %1
Message: %3

Fields #

Name	Description
`Transport` UnicodeString
`TransportSubType` UnicodeString
`MessageGuid` GUID
`MessageBlobLength` UInt16
`MessageBlob` Binary

Event ID 8021: WCN is sending a message.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN is sending a message.

Message #

WCN is sending a message.
Transport: %1
Message: %3

Fields #

Name	Description
`Transport` UnicodeString
`TransportSubType` UnicodeString
`MessageGuid` GUID
`MessageBlobLength` UInt16
`MessageBlob` Binary

Event ID 8030: WCN has changed its beacons on transport Transport.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN has changed its beacons on transport Transport.

Message #

WCN has changed its beacons on transport %1

Fields #

Name	Description
`Transport` UnicodeString
`MessageBlobLength` UInt16
`MessageBlob` Binary

Event ID 8031: WCN has changed its probe response on transport Transport.

Provider: Microsoft-Windows-WCN-Config-Registrar
Channel: Diagnostic

Description

WCN has changed its probe response on transport Transport.

Message #

WCN has changed its probe response on transport %1

Fields #

Name	Description
`Transport` UnicodeString
`MessageBlobLength` UInt16
`MessageBlob` Binary

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 c100becf-d33a-4a4b-bf23-bbef4663d017

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

Observed on:

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

Downloads

Microsoft-Windows-WCN-Config-Registrar registered manifest XML (in the Win11-26200.6584 manifest pack, 2.0 MB) manifest-xml

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`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)