# WOPIActiveUsers

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Reference](https://developer.m-files.com/APIs/gRPC-API/Reference/index.md) > [Messages](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.WOPIActiveUsers/

Struct for WOPI Active Users.

- **Full name:** `MFiles.WOPIActiveUsers`
- **Proto file:** [`mfiles/structs.proto`](https://developer.m-files.com/APIs/gRPC-API/downloads/proto/mfiles/structs.proto)

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## Fields

| Field | Type | Number | Description |
|---|---|---|---|
| <a id="f-username"></a>`username` | `string` | 1 | The Username of the user. |

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## Used by methods

- [IRPCWOPIOperationsPublic.GetActiveParticipants](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCWOPIOperationsPublic/GetActiveParticipants/index.md): Lists the other users who currently have an open co-authoring session on the same file.

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## Used in fields

- [`GetActiveParticipantsResponse.wopi_active_users`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCWOPIOperationsPublic/GetActiveParticipants/index.md#response): The user names (`username`) of the participants.