---
title: "Deprecation: #83883 - Page Not Found And Error handling in Frontend"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-83883"
source: "Changelog/9.2/Deprecation-83883-PageNotFoundAndErrorHandlingInFrontend.rst"
typo3-version: "9.2"
typo3-major: 9
type: "deprecation"
issue: 83883
forge: "https://forge.typo3.org/issues/83883"
tags: ["Frontend", "PHP-API", "FullyScanned"]
rendered: "2026-09-20T18:31:11+00:00"
---

# Deprecation: #83883 - Page Not Found And Error handling in Frontend {#deprecation-83883}

See [forge#83883](https://forge.typo3.org/issues/83883)

## Description {#description}

The following methods have been marked as deprecated:

-   `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->pageUnavailableAndExit()`
-   `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->pageNotFoundAndExit()`
-   `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->checkPageUnavailableHandler()`
-   `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->pageUnavailableHandler()`
-   `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->pageNotFoundHandler()`
-   `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->pageErrorHandler()`

These methods have been commonly used by third-party extensions to show that a page is not found,
a page is unavailable due to misconfiguration or the access to a page was denied.

## Impact {#impact}

Calling any of the methods above will trigger a deprecation warning.

## Affected Installations {#affected-installations}

Any installation with third-party PHP extension code calling these methods.

## Migration {#migration}

Use the new `ErrorController` with its custom actions `unavailableAction()`, `pageNotFoundAction()` and
`accessDeniedAction()`.

Instead of exiting the currently running script, a proposed PSR-7-compliant response is returned which can be
handled by the third-party extension to enrich, return or customize exiting the script.