> Documentation index: https://www.gooddata.ai/docs/gooddata-ui/llms.txt lists every page of these docs as Markdown.

# isNotAuthenticated()

- Package: [@gooddata/sdk-backend-spi](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-backend-spi/index.md)
- Kind: function
- Source: https://github.com/gooddata/gooddata-ui-sdk/blob/rel/11.64/libs/sdk-backend-spi/src/errors/index.ts
- Guides: [Renew the session without a redirect](https://www.gooddata.ai/docs/gooddata-ui/latest/integrations/renew-session-silently/index.md)

Type guard checking whether input is an instance of [NotAuthenticated](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-backend-spi/sdk-backend-spi.notauthenticated/index.md)

**Signature:**

```typescript
export declare function isNotAuthenticated(obj: unknown): obj is NotAuthenticated;
```

## Parameters

| Parameter | Type | Description |
| --- | --- | --- |
| obj | unknown |  |

**Returns:**

obj is [NotAuthenticated](https://www.gooddata.ai/docs/gooddata-ui/latest/api-reference/sdk-backend-spi/sdk-backend-spi.notauthenticated/index.md)