# ExtensionAuthenticationSpecialUserType

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

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

Extension authentication special user type enumeration.

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

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## Values

| Name | Number | Description |
|---|---|---|
| <a id="v-EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_NORMAL"></a>`EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_NORMAL` | 0 | No special type. |
| <a id="v-EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_COMMON"></a>`EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_COMMON` | 1 | Common. |
| <a id="v-EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_BACKGROUND"></a>`EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_BACKGROUND` | 2 | Background user. |
| <a id="v-EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_PERMISSIONS"></a>`EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_PERMISSIONS` | 3 | User for retrieving the permissions in case regular external repository users do not have the permissions to do so. |

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## Used by methods

- [IRPCExtensionAuthentications.RemoveExtensionAuthenticationSpecialCredentials](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCExtensionAuthentications/RemoveExtensionAuthenticationSpecialCredentials/index.md): Removes vault-wide credentials for an external system. Used by vault administration tools.
- [IRPCExtensionAuthentications.StoreExtensionAuthenticationSpecialCredentials](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCExtensionAuthentications/StoreExtensionAuthenticationSpecialCredentials/index.md): Stores vault-wide credentials for an external system: the common, background or permission-reading account. Used by vault administration tools.

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## Used in fields

- [`ExtensionAuthenticationStatus.user_type`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExtensionAuthenticationStatus/index.md#f-user_type): `EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_NORMAL` for a user's own credentials, or the kind of vault-wide account.
- [`StoreExtensionAuthenticationSpecialCredentialsRequest.eeasut`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCExtensionAuthentications/StoreExtensionAuthenticationSpecialCredentials/index.md#request): Which vault-wide account to set: `EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_COMMON`, `EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_BACKGROUND` or `EXTENSION_AUTHENTICATION_SPECIAL_USER_TYPE_PERMISSIONS`.
- [`RemoveExtensionAuthenticationSpecialCredentialsRequest.eeasut`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCExtensionAuthentications/RemoveExtensionAuthenticationSpecialCredentials/index.md#request): Which vault-wide account to remove.