> ## Documentation Index
> Fetch the complete documentation index at: https://auth0-feat-sdk-reference-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# InteractiveErrorHandler

> Configuration option for automatic interactive error handling.

* `'popup'`: SDK automatically opens Universal Login popup on MFA error

```typescript
type InteractiveErrorHandler = "popup"
```