Microsoft-User Experience Virtualization-Agent Driver

Event	Title	Channel	Sample	Rule
0	P1AnsiString.	Debug	N	N
1	P1AnsiString.	Debug	N	N
2	P1AnsiString.	Debug	N	N
3	P1AnsiString.	Debug	N	N
4	P1AnsiString.	Debug	N	N
5	P1AnsiString.	Debug	N	N
100	The Agent Driver has been successfully loaded.	Debug	N	N
101	The Agent Driver has been unloaded.	Debug	N	N
102	The Agent Driver trapped the start of process P1String (ID P2Ulong).	Debug	N	N
103	The Agent Driver was unable to create the communication port to the Agent …	Debug	N	N
104	The Agent Driver was unable to validate the client session to the Agent Service.	Debug	N	N
105	The Agent Driver was unable to accept a port connection from the Agent Service.	Debug	N	N
106	The Agent Driver was unable to send a request to the Agent Service.	Debug	N	N
107	The Agent Driver was unable to initialize the communication port to the Agent …	Debug	N	N
108	The Agent Driver was unable to successfully handle a process start event.	Debug	N	N
109	The Agent Driver trapped the start of process P2UnicodeBuffer (ID P3ProcessId).	Debug	N	N

Event ID 0: P1AnsiString.

Channel: Debug

Message #

%1

Fields #

Name	Description
`P1AnsiString` AnsiString

Event ID 1: P1AnsiString.

Channel: Debug

Message #

%1

Fields #

Name	Description
`P1AnsiString` AnsiString

Event ID 2: P1AnsiString.

Channel: Debug

Message #

%1

Fields #

Name	Description
`P1AnsiString` AnsiString

Event ID 3: P1AnsiString.

Channel: Debug

Message #

%1

Fields #

Name	Description
`P1AnsiString` AnsiString

Event ID 4: P1AnsiString.

Channel: Debug

Message #

%1

Fields #

Name	Description
`P1AnsiString` AnsiString

Event ID 5: P1AnsiString.

Channel: Debug

Message #

%1

Fields #

Name	Description
`P1AnsiString` AnsiString

Event ID 100: The Agent Driver has been successfully loaded.

Channel: Debug

Event ID 101: The Agent Driver has been unloaded.

Channel: Debug

Event ID 102: The Agent Driver trapped the start of process P1String (ID P2Ulong).

Channel: Debug

Message #

The Agent Driver trapped the start of process %1 (ID %2).

Fields #

Name	Description
`P1String` UnicodeString
`P2Ulong` UInt64

Event ID 103: The Agent Driver was unable to create the communication port to the Agent Service.

Channel: Debug

Message #

The Agent Driver was unable to create the communication port to the Agent Service.
Reason: %1
Error code: 0x%2.

Fields #

Name	Description
`P1String` UnicodeString
`P2ErrorCode` HexInt32

Event ID 104: The Agent Driver was unable to validate the client session to the Agent Service.

Channel: Debug

Message #

The Agent Driver was unable to validate the client session to the Agent Service.
Reason: %1
Error code: 0x%2

Fields #

Name	Description
`P1String` UnicodeString
`P2ErrorCode` HexInt32

Event ID 105: The Agent Driver was unable to accept a port connection from the Agent Service.

Channel: Debug

Message #

The Agent Driver was unable to accept a port connection from the Agent Service.
Reason: %1

Fields #

Name	Description
`String` UnicodeString

Event ID 106: The Agent Driver was unable to send a request to the Agent Service.

Channel: Debug

Message #

The Agent Driver was unable to send a request to the Agent Service.
Reason: %1

Fields #

Name	Description
`String` UnicodeString

Event ID 107: The Agent Driver was unable to initialize the communication port to the Agent Service.

Channel: Debug

Message #

The Agent Driver was unable to initialize the communication port to the Agent Service.
Reason: %1
Error code: 0x%2

Fields #

Name	Description
`P1String` UnicodeString
`P2ErrorCode` HexInt32

Event ID 108: The Agent Driver was unable to successfully handle a process start event.

Channel: Debug

Description

The Agent Driver was unable to successfully handle a process start event. The program will start, but its settings (in the event that it has a matching settings location template) will not be synchronized. Reason: String

Message #

The Agent Driver was unable to successfully handle a process start event. The program will start, but its settings (in the event that it has a matching settings location template) will not be synchronized.
Reason: %1

Fields #

Name	Description
`String` UnicodeString

Event ID 109: The Agent Driver trapped the start of process P2UnicodeBuffer (ID P3ProcessId).

Channel: Debug

Message #

The Agent Driver trapped the start of process %2 (ID %3).

Fields #

Name	Description
`P1Length` UInt16
`P2UnicodeBuffer` UnicodeString
`P3ProcessId` UInt32

Provenance

ETW provider GUID de29cf61-5ee6-43ff-9aac-959c4e13cc6c

Defined in Microsoft.Uev.AgentDriverEvents.dll, which carries the event manifest.

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