# ExtensionAuthenticationResponseFromClient

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.ExtensionAuthenticationResponseFromClient/

A structure that specifies an extension authentication response for client server communication.

- **Full name:** `MFiles.ExtensionAuthenticationResponseFromClient`
- **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-response"></a>`response` | [`ExtensionAuthenticationResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExtensionAuthenticationResponse/index.md) | 1 | Extension authentication response. |
| <a id="f-ask_later"></a>`ask_later` | `bool` | 2 | If true, asks for the authentication later as it's defined in lTimeInterval. |
| <a id="f-ask_later_timeout"></a>`ask_later_timeout` | `uint32` | 3 | The time interval after which we are allowed to ask for the authentication again. If equals to zero, never ask again. |

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## Used in fields

- [`ServerDataPushResponseUnion.extension_authentication_request`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ServerDataPushResponseUnion/index.md#f-extension_authentication_request): Extension authentication response. Encrypted with the server public key.