---
title: "Deprecation: #86288 - FrontendBackendUserAuthentication methods"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-86288"
source: "Changelog/9.5/Deprecation-86288-FrontendBackendUserAuthenticationMethods.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Deprecation: #86288 - FrontendBackendUserAuthentication methods

See [forge#86288](https://forge.typo3.org/issues/86288)

## Description

Due to refactorings within AdminPanel, EXT:feedit and via PSR-15 middlewares, the extension class
`\TYPO3\CMS\Backend\FrontendBackendUserAuthentication`, which is instantiated in Frontend
Requests as `$GLOBALS['BE_USER']` has some unused methods which have been marked as deprecated:

-   `checkBackendAccessSettingsFromInitPhp()`
-   `extPageReadAccess()`
-   `extGetTreeList()`
-   `extGetLL()`

## Impact

Calling any of the methods above will trigger a PHP `E_USER_DEPRECATED` error.

## Affected Installations

Any TYPO3 installation with custom PHP code accessing any of the methods above.

## Migration

Use either methods from `BackendUserAuthentication` directly, or - if in context of Admin Panel or
Frontend Editing - use the API methods within these modules directly, if necessary.